VAV700 Multi-functional air volume flow controller with integrated web server 1 Technical documentation VAV700 • Date: 01/2015 • www.schneider-elektronik.com Product description High-speed adaptive control system for variable control of room supply air and room exhaust air volume flows, particularly suitable for clean rooms and laboratories. The integrated dual port switch allows a simple and effective Ethernet-networking of volume flow controllers (supply air/ exhaust air) and fume hood controllers FC700 within the laboratory and the complete building. The parameterisation and the data access occur with a standard web browser. Native BACnet ® /IP with trendlog and intrinsic reporting are optional implemented. Modbus ® is supported as further field bus systems. Extended requirements afford a radiator respectively a coo- ler as well as pressure maintenance of the room. Besides these performance features the multi-functional volume flow controller VAV700 balances all network-connected consu- mer loads and calculates the necessary room supply air re- spectively room exhaust air needed for the maintenance of the parameterised room air exchange (e. g. eightfold). A high-speed control algorithm compares the setpoint with the actual value measured by a differential pressure trans- mitter and controls the air volume quickly, precisely and steadily, independent of pressure fluctuations in the duct system. The system data and setpoint values (volume flow, temperature, pressure, humidity, etc.) are freely program- mable and will be saved voltage fail-safe in the FLASH. Up to three freely configurable static differential pressure sensors allow the detection and regulation of the room pres- sure of two independent rooms besides the volume flow re- gulation. Up to four free slots allow a flexible and cost-effective adjustment of the controlling respectively measuring task to the customer specific requirements. Operation and activation mode (setpoint setting) analogue, digital, BACnet ® , Modbus ® The multi-functional volume flow controller VAV700 is available in seven activation versions with the setpoint setting as the main distinctive feature. The following operation and activation modes are supported (depending on the version): Type Operation mode Activation mode VAV700 variable (VAV) constant (CAV) TCP/IP, Ethernet -IP Yes Yes Analogue 0(2) - 10 V Digital (1-3-level) -AD -AD Yes No No Yes BACnet, TCP/IP, Ethernet -BIP Yes Yes BACnet, MS/TP, RS485 -BM Yes Yes Modbus ® IP -MIP Yes Yes Modbus ® , RS485 -M Yes Yes Performance features Modular variable volume flow control system System data stored voltage fail-safe Integrated web server Simple Ethernet-networking with dual port switch Modular expandable by pluggable boards Parameterisation and fetch of all system values via standard web browser Up to three position independent static differential pressure sensors -100 to 300 Pa, freely configurable for exhaust air, supply air, room pressure Volume flow range 1:15 Patented maintenance-free measuring device with two ring chambers and self-cleaning effect Fast, predictive and adaptive control algorithm Fast, stable and precise control via direct activation of hysteresis-free actuator Suitable for supply air and exhaust air volume flow control in laboratories and clean rooms (consider a sufficiently large room leakage) Adjustment of the volume flow ≤ 2 sec Closed loop control Analogue setpoint input 0(2) - 10 V DC/1 mA Analogue actual value outpur 0(2) - 10 V DC/10 mA Two freely programmable relays with potential free reverse contact Two (expandable) digital inputs for forced control V MIN , V MED , V MAX and damper = SHUT (CAV-mode). Additional temperature loop control for heating and/or cooling Integrated room balancing in network operation Internal plausibility monitoring of the sensor system Various extension moduls for digital in/out, analogue in/ out and field bus Control mode after power failure is freely program- mable Integrated native BACnet ® (IP or MS/TP) with trendlog and intrinsinic reporting Supply voltage 24 V AC provided by customer or 230 V AC optional via internal transformer Round and rectangular version made of steel and PPs Product description ● Performance features
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VAV700Multi-functional air volume fl ow controller with integrated web server
Product descriptionHigh-speed adaptive control system for variable control of room supply air and room exhaust air volume fl ows, particularly suitable for clean rooms and laboratories.
The integrated dual port switch allows a simple and effective Ethernet-networking of volume fl ow controllers (supply air/exhaust air) and fume hood controllers FC700 within the laboratory and the complete building. The parameterisation and the data access occur with a standard web browser. Native BACnet®/IP with trendlog and intrinsic reporting are optional implemented. Modbus® is supported as further fi eld bus systems.
Extended requirements afford a radiator respectively a coo-ler as well as pressure maintenance of the room. Besides these performance features the multi-functional volume fl ow controller VAV700 balances all network-connected consu-mer loads and calculates the necessary room supply air re-spectively room exhaust air needed for the maintenance of the parameterised room air exchange (e. g. eightfold).
A high-speed control algorithm compares the setpoint with the actual value measured by a differential pressure trans-mitter and controls the air volume quickly, precisely and steadily, independent of pressure fl uctuations in the duct system. The system data and setpoint values (volume fl ow, temperature, pressure, humidity, etc.) are freely program-mable and will be saved voltage fail-safe in the FLASH.
Up to three freely confi gurable static differential pressure sensors allow the detection and regulation of the room pres-sure of two independent rooms besides the volume fl ow re-gulation.
Up to four free slots allow a fl exible and cost-effective adjustment of the controlling respectively measuring task to the customer specifi c requirements.
Operation and activation mode (setpoint setting) analogue, digital, BACnet®, Modbus®
The multi-functional volume fl ow controller VAV700 is available in seven activation versions with the setpoint setting as the main distinctive feature. The following operation and activation modes are supported (depending on the version):
Type Operation modeActivation mode
VAV700variable
(VAV)constant
(CAV)TCP/IP, Ethernet -IP Yes Yes
Analogue 0(2) - 10 VDigital (1-3-level)
-AD-AD
YesNo
NoYes
BACnet, TCP/IP, Ethernet -BIP Yes Yes
BACnet, MS/TP, RS485 -BM Yes Yes
Modbus® IP -MIP Yes Yes
Modbus®, RS485 -M Yes Yes
Performance features
Modular variable volume fl ow control system System data stored voltage fail-safe Integrated web server Simple Ethernet-networking with dual port switch Modular expandable by pluggable boards Parameterisation and fetch of all system values via
standard web browser Up to three position independent static differential
pressure sensors -100 to 300 Pa, freely confi gurable for exhaust air, supply air, room pressure Volume fl ow range 1:15 Patented maintenance-free measuring device with two
ring chambers and self-cleaning effect Fast, predictive and adaptive control algorithm Fast, stable and precise control via direct activation of
hysteresis-free actuator Suitable for supply air and exhaust air volume fl ow
control in laboratories and clean rooms (consider a suffi ciently large room leakage) Adjustment of the volume fl ow ≤ 2 sec Closed loop control Analogue setpoint input 0(2) - 10 V DC/1 mA Analogue actual value outpur 0(2) - 10 V DC/10 mA Two freely programmable relays with potential free
reverse contact Two (expandable) digital inputs for forced control VMIN,
VMED, VMAX and damper = SHUT (CAV-mode). Additional temperature loop control for heating and/or
cooling Integrated room balancing in network operation Internal plausibility monitoring of the sensor system Various extension moduls for digital in/out, analogue in/
out and fi eld bus Control mode after power failure is freely program-
mable Integrated native BACnet® (IP or MS/TP) with trendlog
and intrinsinic reporting Supply voltage 24 V AC provided by customer or 230 V
AC optional via internal transformer Round and rectangular version made of steel and PPs
VAV700Multi-functional air volume fl ow controller with integrated web server
Order code: volume fl ow controller with integrated web server
[a] TypeVAV700 Variable Air Volume Controller
[b] Connection to BMS/fi eld bus module
IP Internal networking TCP/IP, Ethernet
AD Analogue/digital (expandable module EM10)
BIP Native BACnet®
BM Native BACnet®, MS/TP, RS485
MIP Modbus®, IP
M Modbus®, RTU, RS485
[c] Supply voltage0 24 V AC/30 VA externT Internes Netzteil 230 VAC/24 VAC/30 VA
[d] Sensor equipment with static differential pressure sensorsAll sensors are freely confi gurable as exhaust air, supply air, room pressure, duct pressure
1 1. Sensor -100...+300 Pa
2 1. Sensor -100...+300 Pa2. Sensor -100...+300 Pa
5 1. Sensor -100...+300 Pa3. Sensor -50...+50 Pa
5
VAV700 - BIP - T - 2
a b c d
Important:Specify air volume VMIN, VMAX respectively VCONST and mode of analogue activation 0 - 10 V DC or 2 - 10 V DC.Order additionally measuring device with damper and actuator (page 4). Order additionally optional expandable modules (page 3).
Ordering example: volume fl ow controller VAV700High-speed multi-functional variable balancing volume fl ow controller via BACnet® IP, 2 relays, with internal power supply 230 V AC, with 2 static differential pressure sensors (-100 - 300 Pa).
Make: SCHNEIDER Type: VAV700-BIP-T-2
VAV700Multi-functional air volume fl ow controller with integrated web server
Suitable for conventional connection to the building management system (BMS)
EM20 4 analogue inputs, 4 analogue outputs General applications, actuator and valve activation (in preparation)
EM30 6 relay outputs General applications, actuator and valve activation (in preparation)
EM40 4 Triac outputs For valve activation, heating/cooling
EM50 12 digital inputs, opto coupler General applications, e.g. switchable air (2-step CAV)
EMNA Charging circuit with discharge circuit for battery backup 12 V DC
With battery backup 12 V DC/1,2 Ah in its own housing (in preparation)
EM10
Order code: Extension modules
Important:Maximal 4 extension modules are pluggable (4 free slots in the FC700). Please order separately according to the desired functionality.
Ordering example: Extension module1 x EM10 for conventional connection to the building management system with 2 analogue inputs, 2 analogue outputs, 2 digital inputs, 2 relay outputs.
VAV700Multi-functional air volume fl ow controller with integrated web server
Ordering example: damper with measuring device and actuator, round version, galvanised steelMeasuring nozzle with damper, DN 250, galvanised steel with damper blade seal, with rubber lip seal, without clad-ding, pipe/pipe, fast running actuator 3 s for 90 ° (fast direct drive SCHNEIDER).
Order code: measuring device with damper and actuator, round version
Important:Volume fl ows and dimensions see page 28 to 31. Order Volume fl ow controller VAV700 and measuring device (MD, VD, DD, KD or SD) with damper always separately.Depending on the selected measuring device pay attention on suffi cient infl ow and outfl ow (> 2 x D).
1 Fast Direct Drive SCHNEIDER 12 V, 3 Nm, 3 sec for 90°
8 Analogue actuator 24 V, 8 Nm, 4 sec for 90°
DD - 250 - S -K -G -0 - RR -1
a b c d e f g h
Order preferred Fast running actuator type 1 for VAV700 controller (better positioning).Order Fast running actuator type 8 (8 Nm) for nominal pipe diameter ≥ 280 mm.
VAV700Multi-functional air volume fl ow controller with integrated web server
[d] MaterialP Polypropylene (PPs), fi re retardent
Pel PPs-el (electrically conductive)
PVC Polyvinyl chloride (PVC)
S Galvanised steel
V2 Stainless steel 1.4301 (V2A)
V4 Stainless steel 1.4571 (V4A)
[e] Damper blade seal (0 = without)K with (steel, stainless steel = standard), see [c]
[f] Cladding (0 = without)D with cladding
[g] Fast running actuator
1 Fast Direct Drive SCHNEIDER 12 V, 3 Nm, 3 sec for 90°
8 Analogue actuator 24 V, 8 Nm, 4 sec for 90°Stetiger Antrieb 24 V, 8 Nm, 3-5sec für 90°Use always with airtight design (with damper blade seal)
DD - 600 -400 -S -0 -0 -1
a b c d e f g
Order preferred Fast running actuator type 1 for VAV700 controller (better positioning).Order Fast running actuator type 8 (8 Nm) for nominal width ≥ 250 mm and nominal height ≥ 250 mm.
Important:Volume fl ows and dimensions see page 32 to 34. Order Volume fl ow controller VAV700 and measuring device (MD, VD, DD, KD or SD) with damper always separately.Depending on the selected measuring device pay attention on suffi cient infl ow and outfl ow (> 2 x D).
Ordering example: damper with measuring device and actuator, rectangular version, galvanised steelMeasuring nozzle with damper, width = 600 mm, height = 400 mm, galvanised steel, without damper blade seal, without rubber lip seal, without cladding, fl ange/fl ange, fast running actuator 3 s for 90 ° (fast direct drive SCHNEIDER).
VAV700Multi-functional air volume fl ow controller with integrated web server
Block diagramPicture 1 shows the block diagram and the piping of the static differential pressure sensor with a maintenance-free measuring system.
All plugs of the sensors and actuators are pre-assembled and directly pluggable on the outside of the FC700-housing. That means an immense reduction of the assembly time and a simplifi cation of the commissioning. The high speed hysteresis-free actuator is operated in the proven direct drive mode and guarantees high control accuracy, highest durability and lifetime.
The pre-assembled CAT6/CAT7-cable for the Ethernet-networking will be plugged in the dual port switch and the system is ready for commissioning.
.
NetworkingThe networking offers maximum fl exibility and safety. The connection to the building management system offers the complete ventilation control and monitoring of all laborato-ries.A fl exible network-adjustment is simply realised by modu-lar extension cards. Besides the already integrated native BACnet® (IP or MS/TP) and Modbus® (IP or MS/TP) LON® is also available. The fi eld bus boards can be retrofi tted simply and at any time for all SCHNEIDER LabSystem products.
Internet technology with integrated web serverThe FC700 possesses an integrated web server for a simple data exchange and to improve the system security and it communicates via the Internet protocol TCP/IP. The operation and parameterisation is carried out by a laptop with a standard web browser. For this reason a simple circuit-entering into multivendor capable building management systems is guaranteed and the system is therefore prepared for all future applications.
Web browser operationThe internal web sites of the integrated web server can be visualised via a standard web browser. Adjustments and parameter can be simply changed. By using a standard web browser project-dependent fi les are no longer necessary to access the central building control system worldwide and at any time. The internal visualisation software VIS7000 reduces signifi cantly the system costs (data points) on the building management system level and can assume the building management functions if necessary.
Native BACnet®-IPThe building management system is provided with a multitude of data and therefore allows an optimsed requirement planning and process control. Native BACnet® (IP or MS/TP) guarantees a fast, simple and direct connection to the building management system without additional gateways. Our own BACnet® stack developed by SCHNEIDER guarantees maximum fl exibility. We support the read-out and storage of trendlog data as well as intrinsic reporting.
Simple wiring and fast commissioning
A simple and fast wiring and commissioning are the main parameters to reduce signifi cantly the installation and assembly costs. The dual port switch integrated on the CPU-board allows an easy daisy chain wiring with pre-assembled cables.
Picture 2: Daisy chain wiring
The wiring can be executed radially as well.Therefore the connection of the bus cable is omitted. All standard cables, e. g. sensor cable, actuator cable, etc. are pre-assembled and externally pluggable.
The commissioning, confi guration, diagnosis and visualisation of all system data (e. g. control time, damper position and setpoint settings) occur centrally through the network by a control unit via PC with standard web browser or decentrally via infrared interface of the graphic indication and operation panel.
VAV-controller
VAV700
Backupaccumulator
230 VAC Power lineDay/Night operationDigital In-/Outputs
Up to four free extension slots are available on the motherboard of the VAV700-controller. The controller can be easily and cost-effectively extended to further functions.
Customer specifi cally developed extension modules for special measuring, control and regulation functions on demand.
EM20 4 analogue inputs, 4 analogue outputs (in preparation)
EM30 6 relay outputs (in preparation)EM40 4 Triac outputs for fan regulation,
heating/coolingEM50 12 digital inputs, opto couplerEMNA Charging circuit with discharge circuit
for battery backup 12 V DC (in prepa-ration)
EMSC Automatic sash closing module
Picture 4: Four free slots
Slot 6 (right) is always equipped with the sensor board and slot 5 with the CPU board. The slots 1 to 4 (left to right) can be freely equipped with the above listed extension modules.
General functional description
Building management system
The building management system (BMS) balances the air requirement of the complete building and can additionally run a plausibility check on all room controllers. Day/night-switch, visualisation of status and fault detections as well as actual values can be simply integrated. Remote main-tenance and fault remote diagnosis as well as an air con-sumption recording relating to the laboratory respectively to the fume hood with an individual accounting can be realised as well.
Up to three position independent sensors
For VAV700 up to three position independent static sensors (-100-300 Pa) are available and can be freely confi gured. Because of the high sensibility and resolution a volume fl ow range of 1:15 can be adjusted smoothly.
The function classifi cations exhaust air, supply air and room pressure to the static differential pressure sensors are freely confi gurable. Therefore the controller can be simply and fl exibly adjusted to all kind of applications. All data and measuring values are available at any time by the connected network.
Picture 3: Sensor board with three static differential pressure sensors
VAV700Multi-functional air volume fl ow controller with integrated web server
Heating and cooling of the laboratory
The heating and cooling of laboratories via appropriate heating and cooling registers can also be executed by FC700. The appropriate analogue and Triac outputs to regulate the heating and cooling valves will be made availabe by the extension modules EM10 to EM40. The power supply of the valves is provided by FC700 and the independent closed loop which is already implemented by default.
All measured room values e. g. temperatures, humidity, pressure are available as actual value via network.
Picture 5: Valve activation
Project planning
The project planning and parameterisation software PRO7000 is compatible to Windows and is used for a simple and fast commissioning. Parameterisation of devices can be executed from a central point for the entire room respectively the entire building. All data of the connected devices with integrated web server by SCHNEIDER can be indicated via standard web browser and entries can be done password protected.
Visualisation
All relevant data is available for the building management system (BMD) via the network and can be used for facility management functions. A better planning and utilisation of the ressources as well as a reduction of energy and operational costs are the significant characteristics.
Laboratory occupation plans, night setback and individual accounting of the air consumption data, energy-efficient operation as well as the safety improvement via remote maintenance and remote diagnosis of the fume hood controller and the volume flow controller for room supply air and room exhaust air are the outstanding advantages of the network technology with an integrated building management system (BMS).
The visualisation software module VIS7000 is the reasonable extension of PRO7000 and allows the simple creation of room graphics and a free alignment of single devices (e. g. fume hood, volume flow controller, etc.) in the room. This is a cost-efficient integral system solution with functions of the building management system.
The touchscreen controller PAD7000 developed by SCHNEIDER is especially adjusted to the requirements of the laboratory ventilation system and adopts the functionalities of the building management system. Special templates are freely disposable. Trendlog and intrinsic reporting are implemented as well. Networking via BACnet®
(IP or MS/TP) and LON® is supported.
Picture 6: Touchscreen Controller PAD7000
General functional description
VAV controller
VAV700
Backupaccumulator
230 VAC Power lineDay/Night operationDigital In-/Outputs
Analogue In/Output 0...10 VDC
Laptop
BACnet / LON-Netzwork
Actuator
Measuring system
Feedback Potentiometer
Ethernet/IP
M
+ -
EM204 Analogue inputs4 Analogue outputs
HeatingM
CoolingM
HumidifyM
DehumidifyM
-
+
VAV700Multi-functional air volume fl ow controller with integrated web server
Functional descriptionVolume fl ow measurement with a position inde-pendent static differential pressure transmitter
Using a suitable measuring device (maintenance-free measuring system (MD), Venturi measuring tube (VD), measuring tube (DD) or measuring cross (KD) the diffe-rential pressure is determined by a position independent differential pressure transmitter. The measurement is very accurate and stable over the entire measuring range of -100 - 300 pa , making it possible to regulate a volume fl ow range of upt to 1:15.
Unlike the thermo-anemometric measuring principle (dyna-mic sensor), air does not fl ow through the static differen-tial pressure transmitter, making it particularly suitable for measuring in dusty and contaminated (corrosive) media (its suitability should be checked in individual cases). The sui-tability of the thermo-anemometric measuring principle for such media is very limited, as the sensor becomes dirty or is affected by corrosive air and thus measurement may be very imprecise or inaccurate.
Volume fl ow setting VMIN, VMAX
The volume fl ow adjustment and parameterisation is done via laptop (with software PC2500) or via the web browser in the network. The demanded volume fl ow is entered as a numeric value. Thereby means:
Function Volume fl ow Reference signal w VMIN minimum 0(2) < w ≤ 10 V DCVMAX maximum w = 10 V DC
The allocation of the analogue demand signal w to the volu-me fl ow Vmin and Vmax illustrates the VAV-curve (variable operation mode).
Demand signal w (setpoint setting via analogue input A-In)
With the demand signal w (setpoint selection), the volume fl ow can be constantly switched between VMIN and VMAX, at which the following is always true: 0 m3/h = 0(2) V DC, VMAX = 10 V DC
The regulated volume fl ow actual value (A-Out) is availa-ble as 0(2) - 10 V DC output voltage (with extension board EM10) or via network. Various master/slave operating modes can be implemented with this signal.
Shield factor (C-value)
The shield factor is the design and geometry dependent constant of the used measuring device. The volume fl ow is calculated according to the following formula:
Parameterisation of the volume fl ow controller
The volume fl ow controller can be parameterised via laptop (with software PC2500) or web browser in the network as follows:
Function Signifi cance RemarksVMIN minimum
volume fl ow≥ shield factor B * 1,5 (rule of thumb)
VMAX maximumvolume fl ow
≤ shield factor B * 16 (ule of thumb)
Shield factor
measuring device constant
10 - 2000
Type default
controller confi gu-ration
analogue (VAV)digital (CAV)
Offset steady +/- value for constant load
+9990 m3/h to- 9990 m3/h
Typ default (setpoint value = analogue or digital)
The controller confi guration specifi es the operating mode (analogue or digital).
In network operation mode (variable volume fl ow control-ler = VAV) the volume fl ow is regulated linearly via network depending on the setpoint setting.
In analogue operating mode (variable volume fl ow con-troller = VAV) the volume fl ow is regulated linearly based on the analogue demand signal w (setpoint value via analogue input A-In).
In digital operating mode (constant volume fl ow controller = CAV) the volume fl ow is regulated in stages based on the digital inputs In1 and In2. Up to four different volume fl ows (VMIN, VMED and VMAX and VEMERGENCY) can be regulated. An analogue demand signal is not required.
In both operating modes (VAV and CAV) pressure fl ucta-tions in the duct system are recognised and automatically regulated.
Offset for integrating of constant loads
With the offset value a fi xed value is programmed (+9990 to - 9990 m3/h) that is added to the volume fl ow setpoint (+ offset = increases the volume fl ow setpoint, - offset decre-ases the volume fl ow setpoint). This makes it possible to integrate constant loads.
A constant difference between supply and exhaust air is therefore possible in master/slave mode. This function is particularly important in airtight rooms (e.g. clean rooms).
V = c . p.p
.V = air volumec = geometrical constant (shield factor)
VAV700Multi-functional air volume fl ow controller with integrated web server
Function description ● Analogue operational modeNotes on controller dimensioning (dimensions and volume fl ow)
Due to measurement accuracy it must be ensured that at the minimum volume fl ow VMIN the fl ow velocity in the volu-me fl ow controller does not fall below 2 m/s.
Due to noise development, in laboratory applications it must be ensured that at the maximum volume fl ow VMAX the fl ow velocity in the volume fl ow controller does not exceed 7,5 m/s.
The volume fl ows VMIN, VMED, VMAX are freely programma-ble within the range 50 - 25.000 m3/h, but care must be taken to ensure suitable volume fl ow controller dimensions with regard to the volume fl ow range while at the same time taking the fl ow velocity into account.
In variable volume fl ow operating mode the desired volume fl ow is predefi ned by a demand signal w (setpoint setting). The value range of the demand signal is 0(2)...10V DC.
The volume fl ow can be constantly controlled between VMIN und VMAX with the demand signal w, at which the following is always true:
0m3/h = 0(2) V DC 0(2) < VMIN ≤ 10 V DC VMAX = 10 V DCAlways note:1. Minimum control value VMIN = shield factor B * 1.52. Values < VMIN are not regulated3. With reference signal w < 0.3 V, the damper will be SHUT
In the example diagram 1 the volume fl ows VMIN = 300 m3/h and VMAX = 750 m3/h are programmed. The volume fl ow actual value signal (A-Out2) correlates with the regulated volume fl ow.The advanced setpoint at analogue output A1-Out is available and the value to be achieved by the actual value. An advanced setpoint is very effective for intercon-necting modules with their own operating time requiring a stable signal (e.g. control of frequency inverters, etc.).
The volume fl ow does not fall below VMIN, even when the demand signal w lies below the corresponding VMAX signal (in the example diagram 1: w = 4V).
Forced control via digital inputsThrough appropriate wiring of the digital inputs In2, In3 and In4 the functions described in table 1 can be executed di-rectly.
The wiring of the digital inputs is as follows: 0 = contact open (no current) 1 = contact closed (under current)
Digital inputsFunction In1 In2Analogue setpoint setting via A-In 0 0VMAX 0 0VMIN 1 0VEMERGENCY, damper SHUT/OPENON/OFF
0 1
VEMERGENCY, damper SHUT/OPENON/OFF
1 1
Contact open = 0, contact closed = 1.
The variable operation mode (analogue setpoint setting via A-in) is only possible, if the digital inputs are In1 = 0 and In2 = 0, which means that they are not under current (contact open). All functions are freely confi gurable under considera-tion of the digital inputs.
Table 1: Forced control during digital operational mode (CAV-mode)
VMAXVMIN
0 [m3/h]1000200 400 600 800
[V]
10
8
6
4
2
0
9
7
5
3
1
Lead
ing
sign
al w
(A-In
1)
[V]
10
8
6
4
2
0
9
7
5
3
1
Air
flow
vol
ume
actu
al v
alue
(A-O
ut1)
Variable operation Air flow volume
VMIN
VMAX
Diagram 1: Variable volume fl ow regulation (VAV)
Determination of the volume fl ow for laboratory ap-plications under consideration of the fl ow velocity v
Volume fl ow Flow velocity vVMIN v ≥ 1,5 m/sVMAX v ≤ 7,0 m/s
The fl ow velocity of the volume fl ow VMin has to be 1,5 m/s at least (lower control range) and must not exceed 7,0 m/s (Vmax) due to noise protection reasons.
VAV700Multi-functional air volume fl ow controller with integrated web server
In constant volume fl ow operating mode (digital operating mode) the desired volume fl ow is controlled based on the digital inputs.
The available operating stages are shown in diagram 2 and table 2. 1 level, 2 level, 3 level or 4 level operation can be easily implemented by direct control of the digital inputs.
The volume fl ows are programmed to the values VMIN = 875 m3/h, VMED = 1750 m3/h and VMAX = 2150 m3/h. VMED must always lie between VMIN and VMAX. The volume fl ow actual value signal (A2-Out) correlates with the regulated volume fl ow.
The following is valid for the volume fl ow actual value:
SHUT = 0m3/h = 0(2) V DC 0(2) < VMIN ≤ 10 V DC VMAX = 10 V DC
Master-slave-sequence control with equal per-centage ratio in VAV operation
This master-slave sequence control is always used if the room pressure must be maintained at an equal percentage ratio of supply and exhaust air. Suffi cient replacement fl ow of the difference between the supply and exhaust air must be ensured in this operating mode.
The master controller is programmed with the volume fl ow values VMIN and VMAX and the demand signal w is added on directly. The volume fl ow actual value of the master con-troller provides the demand signal for the slave controller, which can be programmed with other VMIN and VMAX volu-me fl ow values depending on the application.
If the master controller is mounted in the supply air and the slave controller in the exhaust air and positive (+) room pressure is required, the slave controller must be program-med with the lower percentage volume fl ow values VMIN and VMAX in relation to the master controller.
If negative (-) room pressure is required, the slave control-ler must be programmed with the lower percentage volume fl ow values VMIN and VMAX in relation to the master con-troller. Sample settings for master-slave controllers:
The master slave sequence control applies for both equal percentage ratio and constant difference between supply and exhaust air. The demand signal w (A-In) is added on to the master controller and the volume fl ow actual value A1-Out (with extension module EM10) provides the demand signal for the slave controller.
This ensures that the slave controller always follows the master controller. For safety reasons, master/slave se-quence control must always be given preference over par-allel control.
VAV700Multi-functional air volume fl ow controller with integrated web server
VMAXVMIN
0 [m3/h]1000200 400 600 800
[V]
10
8
6
4
2
0
9
7
5
3
1
Lead
ing
sign
al w
(A-In
)
[V]
10
8
6
4
2
0
9
7
5
3
1
Air
flow
vol
ume
actu
al v
alue
(A-O
ut)
Air flow volume Master
VMIN
VMAX
VMAXVMIN Air flow volume Slave(-)
VMAXVMIN Air flow volume Slave(+)
Diagram 3: Sequence control (master-slave) in equal percentage ratio
Master-Slave sequence control
VMAXVMIN
0 [m3/h]1000200 400 600 800
[V]
10
8
6
4
2
0
9
7
5
3
1
Lead
ing
sign
al w
(A-In
)
[V]
10
8
6
4
2
0
9
7
5
3
1A
ir flo
w v
olum
e ac
tual
val
ue (A
-Out
)
Air flow volume Master
VMIN
VMAX
VMAXVMIN Air flow volume Slave(-)
VMAXVMIN Air flow volume Slave(+)
constant difference
Supply-/Exhaust
Diagram 4: Sequence control (master-slave) with con-stant difference
In the sample settings, the volume fl ow values VMIN und VMAX of the slave (+) controller were programmed to -20% (negative room pressure) in relation to the volume fl ow va-lues of the master controller. For negative room pressure the volume fl ow values VMIN and VMAX of the slave (-) con-troller must be programmed to +20 % in relation to the volu-me fl ow values of the master controller.
The equal percentage ratio between supply and exhaust air is maintained throughout the entire volume fl ow range of VMIN to VMAX.
Master-slave sequence control with constant difference in VAV operating mode (analogue ope-rating mode)
This form of master/slave sequence control is used when room pressure with a constant difference between supply and exhaust air is required. This operating mode is selected for airtight rooms (e.g. clean rooms).
The master controller is programmed with the volume fl ow values VMIN and VMAX and the demand signal w (A8-in) is added on directly. The volume fl ow actual value (A2-out) of the master controller provides the demand signal for the sla-ve controller, which is programmed with the same volume fl ow values VMIN and VMAX, depending on the application.
In addition, the offset is also programmed in the slave con-troller. If the master controller is mounted in the supply air and the slave controller in the exhaust air and positive (+) room pressure is required, the slave controller must be pro-grammed with a negative offset.
If negative (-) room pressure is required, the slave controller must be programmed with a positive offset. Sample settings for master-slave controllers:
In this example, the volume fl ow values VMIN and VMAX of the slave (+) controller and the slave (-) controller were pro-grammed with the volume fl ow values of the master con-troller. For negative room pressure the offset of the slave (-) controller must be programmed with +150 m3/h.
The constant difference between supply and exhaust air is maintained over the entire volume fl ow range of VMIN to VMAX.
Master-slave sequence control in CAV operating mode (digital mode)
In CAV operating mode the digital inputs of the master con-troller are wired to control the different operating stages (see table 3). The volume fl ow actual value A1-Out (with ex-tension board EM10) of the master controller provides the demand signal for the slave controller.
DDC/BMS control
If the master controller is controlled via a DDC/BMS (de-mand signal w or digital control) the volume fl ow actual va-lue of the slave controller can be added on as feedback and therefore used to monitor the functioning of both volume fl ow controllers (master and slave).
VAV700Multi-functional air volume fl ow controller with integrated web server
Multi functional applications in analogue or network operating mode • Heating and/or cooling
Volume fl ow controller network operating modes
The variable volume fl ow controller VAV700 is especial-ly developed for the networked operation and possesses different operating modes which can be confi gured via the network. The following controller types are implemented :
Multi-functional applications in the network operating mode (BACnet, Modbus®)
Besides the on the previous pages described classical vo-lume fl ow controller operating modes e. g. variable volume fl ow controller, 3-level constant volume fl ow controller, ba-lancing volume fl ow controller and room volume fl ow dif-ferential controller the following additional multi-functional applications are implemented on the VAV700:
Actual value collection of room pressures Own temperature control loop for heating and/or
cooling Own pressure cascade control loop
Via the available extension modules any customer specifi c applications can be cost-effectively implemented.
Actual value collection of room pressures
The volume fl ow controller VAV700 has up to two free static differential pressure transmitter -100 - 300 Pa which can be freely confi gured e. g. for a pressure cascade control loop or for measuring of room pressures.
Additionally, any analog values 0 (2) ... 10 VDC can be con-nected to the analog inputs of the expansion modules (eg EM10) and are available as BACnet objects on the network.
The PICS-list (Protocol Inplementation Conformance State-ments) for BACnet® applications can be requested or down-loaded from our web sitewww.schneider-elektronik.com
VAV700Multi-functional air volume fl ow controller with integrated web server
Extension modules
The motherboard of the FC700 controller possesses up to four free extension slots for special functions. The controller can be arbitrarily extended to further functions besides the sash closing function (extension module EMSC).
Custom made extension modules for special measuring,
Extension modules
Functionality Description
EM10 In- and outputs Suitable for general applications:2 analogue inputs Measuring of temperature, humidity, pressure2 analogue outputs Building management system connection, volume fl ow
controller regulation, valve regulation2 digital inputs Building management system connection, regulation2 relay outputs Building management system connection, valve
regulation (2-point), status report
EM20 In- and outputs Suitable for general applications:(in preparation) 4 analogue inputs Measuring of temperature, humidity, pressure
Analogue room balancing4 analogue outputs Building management system connection, volume fl ow
controller regulation, valve regulation
EM30 Outputs Suitable for general applications:(in preparation) 6 relay outputs Building management system connection, valve
regulation (2-point), status report
EM40 Outputs Suitable for valve regulation:4 Triac outputs Direct regulation of heating and cooling valves (2-point)
EM50 Inputs Suitable for switchable extraction and alarm:12 digital inputs, opto coupler 2 steps constant air volume, alarm, status report
EMNA Special module Suitable for external battery backup:(in preparation) Charging circuit with discharge circuit for
battery backup 12 V DCThis module is required for an optional external battery backup 12 V DC.
controlling and regulation functions can be easily and cost-effectively developed.
The following extension modules are available:
VAV700Multi-functional air volume fl ow controller with integrated web server
Room plan 1 (standard) ● fume hood controller FC700 with TCP/IP-networking via Ethernet
To more Laboratories
FC
FUME HOOD #1
VAV700-IP
Room supply airflow control Room exhaust
airflow control
FC
FUME HOOD #2
Mdp
FC
FUME HOOD #3
VAV700-IP
Mdp
Cable type: CAT 6Building Management System
Cab
le ty
pe:
IY(S
t)Y 1
x2x0
,8
Notes:
FC700-IP = Fume hood controller, fully variable, with Internet Protokoll TCP/IP
RMC700 = Room management controllerDay/Night operation (optional), Status display
VAV700-IP = High speed variable airflow controller VAV, with Internet Protokoll TCP/IP
24 VAC = 24 VAC external voltage for VAV700-IPand RMC700
Attention! Ethernet-Network cable must be wired with CAT6 cable.Do not exceed the maximum cable length.
ETHERNET TCP/IP
24 VAC
24 VAC
ETHERNET TCP/IP
Optional:Room management controller RMC700
24 VDC
Modbus RS485
Tagbetrieb
RMC700
Tag Nacht
Notfall I/O
Ein/Aus
Isttemperatur: 21 °C 75 % rF
ETHERNET TCP/IP
The room plan 1 shows the networking by default with the Internet protocol TCP/IP via Ethernet. Due to the high data transfer rate it is possible to network any number of sub-scribers. The response time of the linked subscribers (e. g. room supply volume fl ow controller) is suffi ciently secured even during heavy data traffi c.
WiringThe integrated dual port switches of VAV700 and FC700 al-low a simple and fast daisy chain wiring with pre-assembled CAT6/CAT7 patch cables and therefore reduce the assem-bly and installation costs signifi cantly. Therefore the con-necting of the bus cable is omitted and all standard cables like sensor cable, actuator cable, etc. are pre-assembled and pluggable on the outside.
Balancing
The volume fl ow controller VAV700-IP balances the re-quired room supply air and room exhaust air independent-ly according to the laboratory exhaust air and controls the calculated value self-suffi ciently. If the added exhaust air of the fume hoods is not suffi cient for the maintenance of a defi ned room air exchange rate (e. g. room air exchange rate = quadruple or octuple) the room exhaust air volume fl ow controller raises the volume fl ow as long as the reque-sted room air exchange rate is reached.
The room supply air volume fl ow controller follows the total room exhaust air, reduced by a fi xed value or a percentaged reduction. Therefore the required low pressure in the labo-ratory according to DIN 1946, part 7 is guaranteed for all operating conditions. The supply of the volume fl ow control-ler with 24 V AC has to be provided by the customer.
The optional room management controller RMC700 can be connected directly to the network via LON® or Modbus® and regulates e. g. day/night operation per room. Status and operation information (temperature, humidity, pressure) can be indicated additionally on the graphic display.
Commissioning via Internet protocol TCP/IP
For a simple data transfer and to improve the system se-curity VAV700-IP has an integrated web server and com-municates via the Internet protocol TCP/IP by default. The operation, parameterisation and commissioning occur via laptop with standard web browser.
The commissioning can occur decentrally for all linked sub-scribers via a standard web browser or directly via infrared interface at the fume hood with a laptop and the installed software PC2500.
The internal websites of the integrated web server can be visualised worldwide with a standard web browser. Therefore a simple remote maintenance can be realised. The internal visualisation software VIS7000 reduces signifi cantly the system costs (data points) on the building management system level and can assume the building management functions if necessary. Extension modules
Any function extensions can be simply and modulary realised by the subsequently pluggable extension modules. Besides the sash closing function (extension module EMSC) miscellaneous input and output modules (analogue and digital) for measuring value collection (temperature, humidity) respectively for controlling heating and cooling valves as well as fi eld bus modules (LON®) are available. The controller can be arbitrarily extended to further functions besides the sash closing function (extension module EMSC).
All extension modules are embedded in the networking and provide the data and measuring values via the Internet protocol TCP/IP.
VAV700Multi-functional air volume fl ow controller with integrated web server
Room scheme 2 ● Volume fl ow controller VAV700/FC700 with BACnet-IP networking and room visualisation
The room plan 2 shows a networking with native BACnet®-IP protocol. The BACnet®-IP protocol is increasingly esta-blished as de facto standard for the building automation. Due to the high data transfer rate it is possible to network any number of subscribers. The response time of the linked subscribers (e. g. room supply volume fl ow controller) is suffi ciently secured even during heavy data traffi c.
Wiring
Refer to description of room plan 1.
Balancing
Refer to description of room plan 1.
Native BACnet®-IP
A BACnet® stack implemented in the 700 product series allows the direct communication with the business management system RMS700 by SCHNEIDER. Gateways are not required anymore and due to the direct implementation of the BACnet® stack to the CPU board the term „native BACnet®“ has been created.
BACnet® is a multivendor capable interface for management systems and allows the simple implementation and visualisation of functions.
Extension modules
Refer to description of room plan 1.
List of objects and object typesThe PICS list (Protocol Implementation Conformance Statements) for BACnet® applications can be required or downloaded from our website: www.schneider-elektronik.com.
Room visualisation
The project planning and parameterisation software PRO7000 is compatible to Windows® and is used for a simple and fast commissioning. Parameterisation of devices can be executed from a central point for the entire room respectively the entire building. All data of the connected devices with integrated web server by SCHNEIDER can be indicated via standard web browser and entries can be done password protected.
The visualisation software module VIS7000 is the reasonable extension of PRO7000 and allows the simple creation of room graphics and a free alignment of single devices (e. g. fume hood, volume flow controller, etc.) in the room. This is a cost-efficient integral system solution with functions of the building management system.
The touchscreen controller PAD7000 developed by SCHNEIDER is especially adjusted to the requirements of the laboratory ventilation system and adopts the functionalities of the building management system. Special templates are freely available. Trendlog and intrinsic reporting are implemented as well.
Bild 8: Touchscreen Controller PAD7000
To more Laboratories
FC
FUME HOOD #1
VAV700-BIP
Room supply airflow control
Room exhaust airflow control
FC
FUME HOOD #2
Mdp
FC
FUME HOOD #3
VAV700-BIP
Mdp
Cable type: CAT 6Building Management System
Notes:
FC700-BIP = Fume hood controller, fully variable, with BACnet-IP protocol
RMS700-BIP = Room Management and Information system,Touchscreen graphik display with BACnet-IP protocol
VAV700-BIP = High speed variable airflow controller VAV, with BACnet-IP protocol
24 VAC = 24 VAC external power supply for VAV700-BIP
Attention! Ethernet-Network cable must be wired with CAT6 cable.Do not exceed the maximum cable length.
BACnet-IP
24 VAC
24 VAC
BACnet-IP
BACnet-IP
24 VDC
OptionalRoom Management and Information System RMS700-BIP
VAV700Multi-functional air volume fl ow controller with integrated web server
Room controller functionsEach fume hood controller FC700 can be upgraded with 4 boards at most with the universal extension modules EM, so that complete room controller functions can be re-alised. A permanently enhanced variety of modular boards is available for the individual process application. With the extension modules EM10 to EM50 the following functions can be realised:
Room temperature controlling with setpoint setting
Room humidity controlling with setpoint setting
Activation of heating and cooling valves for static radiators respectively cooling ceiling or fan coils (with EM30, 6 relay outputs for fan activation, step 1 to 3).
Activation of the demand-based room illumination
Activation of the curtains (automatic shading)
Alarm detection (e. g. gas alarm, water alarm)
Extinguish functions
With this technology sustainable and energy-effi cient offi ce and functional buildings can be realised which can be certifi ed according to LEED or DGNB.
All relevant data are available via TCP/IP, BACnet®/IP over Internet or for a central building management system. Decentral closed loops adopt the independent room controlling functions without intervention of the building management system which mainly dynamically visualises the processes and rooms.
The room pressure maintenance of laboratory and clean rooms as well as the energetic capacity accounting is easily realised.
The visualisation software module VIS7000 allows the simple creation of dynamic room graphics and a clear exposition on the PC. This is a cost-efficient integral system solution with functions of the building management system.
PAD7000 adopts the functionalities of a building management system.
The room plan 2 shows the connection of the volume fl ow controller VAV700-AD (analogue input) with up to 9 fume hoods (Ain 1 to Ain 9) with the laboratory controller LCO500. The laboratory controller regulates up to eight freely con-fi gurable volume fl ow controllers for room supply air/room exhaust air (Aout1 to Aout8). The internal switching power supply (optional) provides a maximum of 8 volume fl ow con-trollers with supply voltage 24 V DC which simplifi es the planning and the implementation is more cost-effective.
The analogue inputs Ain1 to Ain10 will be summed-up and can be combined to miscellaneous groups on the analo-gue outputs Aout1 to Aout8. Thereby any confi gurations are possible. Therefore it is possible to regulate independently e. g. several laboratories (max. 8) with one room supply air volume fl ow controller each and 10 fume hoods at most. Like it is shown in room plan 2 an additionally room exhaust air can be confi gured besides the room supply air. Each room exhaust air volume fl ow controller requires an analo-gue input (recirculation actual value room exhaust air).
Networking with building management system
A cost-effective and simple connection to the multivendor capable building management system (BMS) can be reali-sed via the network by an optional fi eld bus module (LON®, BACnet® or Modbus®).
Via the BACnet® bus board a native BACnet® can be re-alised which means that no gateways are necessary to possibly implement protocols and data. Therefore a full compatibility as well as a simple and fast commissioning is guaranteed.
With the extension of the digital fault warning inputs (optio-nal) all fault warnings of the connected fume hoods will be gathered and sent via network to the building management
system (BMS).
The laboratory controller LCO500 fulfi lls the functionality of a DDC-substation respectively a router.
The following data are available as network variables in the business management system:
readout of the exhaust air actual values of the fume hoods Ain1 to Ain10 readout of the summed-up room balances
(room supply air/room exhaust air) setpoints for 8 analogue outputs readout of the 8 digital outputs setting of the 8 relay outputs
Therefore special functions like day/night switchover of the fume hood controller, regulation and monitoring of the room control unit, temperature regulation as well as controlling of the heating and cooling valves are simply realisable.
Extended functions like remote maintenance are realisable as well. By day/night switchover, retrieval and comparison of the individual exhaust air actual values each fume hood can be checked regarding this function.
The optional room management controller RMC700 can be connected directly via LON® or Modbus® to the network and regulates e. g. day/night operation per room. Status and operation information (temperature, humidity, pressure) can be additionally indicated on the graphic display.
The laboratory controller LCO500 combines the analogue technology with the advantages of the bus technology and offers a cost-effective, fl exible and secure regulation and vi-sualisation per room via the building management system.
For detailed description please refer to data sheet LCO500.
VAV700Multi-functional air volume fl ow controller with integrated web server
The analogue lead signal is connected by the transmitter (e.g. temperature sensor, setpoint device) respectively by the laboratory controller LCO500, the DDC or BMS. The vo-lume fl ow actual value signal of the master-VAV generates the lead signal of the slave-VAV.
The volume fl ow actual value signal of the slave-VAV can be connected as a feedback signal to the laboratory controller LCO500, the DDC or BMS, whereby the functionality of the complete master-slave-sequence control can be checked. A forced control is possible as well (please refer to table 1 on page 9). The allocation digital input/function is freely programmable.
Connection diagram CAV operating mode
The different CAV operating steps are apparent in table 2 on page 10. The volume fl ow Vmax is adjusted if both digital inputs (In1 and In2) are not under current, which means that the contacts are open. The current feed of In1 adjusts Vmin and of In2 adjusts VEmergency. The allocation digital input /function is freely programmable.
The master is adjusted during CAV operating mode and the slave during VAV operating mode. The slave follows the ac-tual value of the master. The feedback of the volume fl ow actual value signal to the laboratory controller LCO500 or DDC/BMS is possible as well.
Connection diagram network operating mode
The volume fl ow controller VAV700 is designed as a net-work controller by default. The system is completely inde-pendent by direct connection with the fume hood controller FC700. The internal communication runs via Modbus® IP or via BACnet®-IP respectively LON® on demand. All relevant data and parameters are exchanged on a suffi cient rate and the balancing of room supply air respectively the required room exhaust air to maintain the necessary room air ex-change rate is automatically calculated and adjusted via the connected volume fl ow controllers VAV700.
The integrated Ethernet-dual port switch allows a fast and cost-effective daisy-chain-wiring with pre-assembled ca-bles. The commissioning and parameterisation of all con-nected devices (FC700, VAV700, etc) are carried out from an arbitrary central point.
All relevant data like actual values and parameterised set-points are available for the BMS connected to the network.
VAV700Multi-functional air volume fl ow controller with integrated web server
BACnet®-cable specifi cations (MS/TP, RS485)
In a BACnet®-network (MS/TP, RS485) is only daisy-chain-wiring allowed (no free topology, like LON®)
MS/TP (master slave/token-passing)
The master slave/token passing-protocol has been develo-ped by ASHRAE and is only available for BACnet®.
The connection to the fi eld bus occurs via the cost-effective interface EIA RS 485. MS/TP can be operated in a pure ma-ster slave-mode, with token delivery between equal nodes (peer to peer token passing methods) or in a combination of both methods.
EIA RS 485 standard
The EIA RS 485 standard defi nes a bidirectional bus sys-tem with up to 32 participants. Given that several transmit-ters work on a common wire, it has to be guaranteed by a protocol that maximum one data transmitter is active at any time (e. g. MS/TP). All other transmitters have to be in a high-resistance condition during this time.
The ISO-standard 8482 standardises the cable topology with a maximum length of 500 m. The participants have to be connected to this daisy-chained bus cable ( line topolo-gy) via a branch line with a maximum length of 5 m. A cable termination with termination resistors (2 x 120 Ohm) on both ends is basically necessary, to avoid refl ections.
If no data transfer takes place (data transmitter inactive) a defi ned resting level should be adjusted on the bus system. This can be achieved by connecting wire B over 1 k Ohm to ground (pull down) and wire A over 1 k Ohm to + 5 V DC.
During installation each wire of the twisted pair (A and B) has to be necessarily applied alone. The correct polarity of the twisted pair has to be necessarily regarded because a false polarity causes the inversion of the data signals. Espe-cially in case of diffi culties in connection with the installation of new end devices each failure detection should begin with checking the bus polarity.
Generally recommended is the laying of daisy-chained shielded wires and to ground the shielding one-sided (GND).
Network cable specifi cations ● BACnet® ● Modbus®
VAV700Multi-functional air volume fl ow controller with integrated web server
VAV700Multi-functional air volume fl ow controller with integrated web serverNetwork cable specifi cations ● BACnet® ● Modbus®
Ethernet-cable specifi cation
Ethernet-cable Cat-6A is suitable for structured wiring of all connected devices in the fi eld bus technology for an increased bandwidth requirement of 10 Gigabit-Ethernet (10GBASE-T).
Cat-6A is suitable for transmission frequencies up to 500 MHz and distances up to 100 m as well as downward com-patible to existing network protocols.
Cat-6A is defi ned by the international standards committee ISO/IEC (International Organization for Standardization/In-ternational Electrotechnical Commission).
Modbus®-cable specifi cation (RS485)
Modbus® is an application log for the information exchange between fi eld modules with integrated Modbus® controllers.
The Modbus® protocol is settled on the application layer of the OSI reference model and supports the master slave mode between intelligent devices. .
The Modbus® protocol defi nes the information type on which the Modbus® controllers communicate. It describes how a Modbus® controller approaches another controller via request, how this controller answers and how failures are detected and documented.
The Modbus® protocol functions on request answer-base and offers different services which are specifi ed by func-tion codes. The Modbus® protocol determines during the communication how each controller gets to know the device address and recognises the information which belong to it. Besides it defi nes the releasing actions and which informa-tion the Modbus® controller can gather from the information fl ow. If an answer is requested then it will be confi gured in the controller and is sent by the Modbus® protocol to the appropriate station.
The Modbus® can be cost-effi ciently realised via EIA RS 485 and is therefore excellently suitable for the laborato-ry internal networking. The wiring described for the EIA RS 485 standard (please refer to BACnet®) has to be absolutely complied with.
SCHNEIDER products in networked systems
Due to the retrofi t fi eld bus modules for LON®, BACnet® and Modbus® by SCHNEIDER the complete system is very fl exible, individual and cost-effi ciently adaptable to different networks.
We offer the complete system from one source without compatibility problems.
For detailed cable specifi cations please refer to SCHNEI-DER LabSystem handbook, chapter 10.0.
VAV700Multi-functional air volume fl ow controller with integrated web server
high controller precision and response sensitivity static differential pressure transmitter -100 - 300 Pa insensitive even under inappropriate infl ow measuring nozzle with integrated ring meas. chamber fast and stable volume fl ow control (< 2 s) damper with rubber lip seal
For the laboratory supply air (volume fl ow controller made of steel) the measuring nozzle DD (standard version) or optional the measuring cross with additional shield KD is delivered.
Given that the volume fl ow control range VMin, VMax and VNom is different for each measuring system the volume fl ow va-lues for each nominal size of the specifi c measuring device is listed below.
VAV700-X-X-X
DD-250-S-0-0-0-MM-1
Planning instruction for volume fl ow determination:Consider volume fl ow in relation to fl ow velocity v VMIN = volume fl ow at a fl ow velocity v = 1 bis 2 m/s VMAX = volume fl ow at a fl ow velocity v = 6 m/s (recommended) VNOM = volume fl ow at a fl ow velocity v = 10 bis 12 m/s
Due to the fl ow noise of the volume fl ow VMAX the fl ow velocity v should not overrun 6 m/s during the labora-tory operation (exhaust and supply air). In case of exceeding this value the required noise level of < 52 dB(A) according to DIN1946, part 7 can only be reached with complex sound absorption. The maximal adjustable volume fl ow VMAX should always be about 40 % below VNOM.
VAV700Multi-functional air volume fl ow controller with integrated web server
Recommended volume fl ow VMAX at a fl ow velocity v = 6m/s.Consider planning instruction for volume fl ow control range VMIN, VMAX und VNOM on page 28.
Volume fl ow controller with damper and inte-grated measuring cross respectively mainte-nance-free measuring device (only available in stainless steel), round version
KD (measuring cross with additional shield)SD (measuring cross without additional shield)MD (maintenance-free measuring system), only available in stainless steel
high controller precision and response sensitivity static differential pressure transmitter -100 - 300 Pa consider suffi cient infl ow distance (≥ 2*D) measuring nozzle with shield fast and stable volume fl ow control (< 2 s) damper with rubber lip seal
For the laboratory supply air (volume fl ow controller in steel design) the measuring cross with additional shield KD or optional the measuring nozzle DD (standard version) is de-livered. The measuring device MD (patented by SCHNEI-DER) is only available in plastic or steel.
Given that the volume fl ow control range VMin, VMax and VNom is different for each measuring system the volume fl ow va-lues for each nominal size of the specifi c measuring device is listed below.
VAV700Multi-functional air volume fl ow controller with integrated web serverDimensions ● Volume fl ow ranges, round version ● PPs, PPs-el, PVC
Volume fl ow controller with damper and inte-grated maintenance-free measuring system, round design
Material: PPs, PPs-el, PVCMeas.system:
MD (maintenance-free measuring device), standard in PPs, PPs-el, PVC
high controller precision and response sensitivity measuring device with integrated ring meas. chamber insensitive even under inappropriate infl ow maintenance-free and self cleaning static differential pressure transmitter -100 - 300 Pa option: tight closing damper according to DIN
The measuring device MD (patented by SCHNEIDER) of-fers the best quality/price ratio for the laboratory exhaust air (volume fl ow controller in PPs design) and is delivered by default.
Given that the volume fl ow control range VMin, VMax and VNom is different for each measuring system the volume fl ow va-lues for each nominal size of the specifi c measuring device is listed below.
Recommended volume fl ow VMAX at a fl ow velocity v = 6m/s.Consider planning instruction for volume fl ow control range VMIN, VMAX und VNOM on page 28.
Nominal size
Inner-Ø
Volume fl ow VMIN, VMAX, VNOM
at a fl ow velocity vMeasuring device MD (standard)
Installation length Flange dimensions
NS[mm]
D[mm]
v ≈ 1 m/sVMIN
[m3/h]
v = 6 m/sVMAX
[m3/h]
v ≈ 10m/sVNOM
[m3/h]W
[mm]L1
[mm]L
[mm]
Ext.Ø
D1[mm]K
[mm]d
[mm]No.
110 111 28 205 277 300 40 220 170 150 7 4
125 126 36 265 364 300 40 220 185 165 7 8
160 161 59 434 589 340 40 260 230 200 7 8
200 201 100 679 1005 350 50 250 270 240 7 8
250 251 163 1060 1628 400 50 300 320 290 7 12
315 316 267 1683 2667 490 50 390 395 350 9 12
400 401 435 2714 4347 580 50 480 480 445 9 16
Air direction
Ring chamber 1 withmeasuring drills d=3,0mm
Overall length = B
Ring chamber 2 both sides withmeasuring drills d=3,0mm
Damper 90° shifted arrangedto the measuring tube
Built-in length = LL1 L1
Air direction
Ring chamber 1 withmeasuring drills d=3,0mm
Overall length = built in length = B
Ring chamber 2 both sides withmeasuring drills d=3,0mm
Volume fl ow controller with damper and inte-grated maintenance-free Venturi measuring nozzle, round version
Material: PPs, PPs-el, PVCMeas.system:
VD (Venturi meas. nozzle), against extra charge
high controller precision and response sensitivity Venturi nozzle with integrated ring meas. chamber
insensitive even under inappropriate infl ow maintenance-free and self cleaning
static differential pressure transmitter -100 - 300 Pa option: tight closing damper according to DIN
SCHNEIDER offers besides the patented measuring-de-vice MD the Venturi measuring nozzle VD (against extra charge) for the laboratory exhaust air (volume fl ow control-ler in PPs design).
Given that the volume fl ow control range VMin, VMax and VNom is different for each measuring system the volume fl ow va-lues for each nominal size of the specifi c measuring device is listed below.
Recommended volume fl ow VMAX at a fl ow velocity v = 6m/s.Consider planning instruction for volume fl ow control range VMIN, VMAX und VNOM on page 28.
VAV700Multi-functional air volume fl ow controller with integrated web serverDimensions ● Volume fl ow ranges, rectangular design ● PPs, PPs-el, PVC ● not airteight closing
B
Damper
Act
uato
r
H
35
35
ca. 100
ca. 60
Con
trol
ler
400
Damper
Actuator
Pressure nibble
Measuring device
+ -
Controller
+-
Air direction
Volume fl ow controller with damper and inte-grated measuring device, rectangular version, not airteight closing
Material: PPs, PPs-el, PVCMeas.system:
MD (maintenance-free measuring device), standard in PPs, PPs-el, PVC
high controller precision and response sensitivity static differential pressure transmitter -100 - 300 Pa consider suffi cient infl ow distance (≥ 2*D) measuring nozzle with integrated ring meas. chamber fast and stable volume fl ow control (< 2 s) maintenance-free and self cleaning
The measuring device MD (patented by SCHNEIDER) of-fers the best quality/price ratio for the laboratory exhaust air (volume fl ow controller in PPs, PPs-el and PVC design) and is delivered by default.
Width Volume fl ow controller VMIN (at v = 2 m/sec), VMAX (at v = 6 m/s), VNOM (at v = 12 m/sec)
Intermediate sizes on demand.Recommended volume fl ow VMAX at a fl ow velocity v = 6m/s.Consider planning instruction for volume fl ow control range VMIN, VMAX und VNOM on page 28.
VAV700Multi-functional air volume fl ow controller with integrated web server
Volume fl ow controller with damper and inte-grated measuring device, rectangular version, airteight closing according to DIN 1946, part 4
Material: PPs, PPs-el, PVCMeas.system:
MD (maintenance-free measuring device), standard in PPs, PPs-el, PVC
high controller precision and response sensitivity static differential pressure transmitter -100 - 300 Pa consider suffi cient infl ow distance (≥ 2*D) measuring nozzle with integrated ring meas. chamber fast and stable volume fl ow control (< 2 s) maintenance-free and self cleaning
The measuring device MD (patented by SCHNEIDER) of-fers the best quality/price ratio for the laboratory exhaust air (volume fl ow controller in PPs, PPs-el and PVC design) and is delivered by default. The airteight closing model is only available in the following special dimensions.
Width Volume fl ow controller VMIN (at v = 2 m/sec), VMAX (at v = 6 m/s), VNOM (at v = 12
Intermediate sizes on demand.Recommended volume fl ow VMAX at a fl ow velocity v = 6m/s.Consider planning instruction for volume fl ow control range VMIN, VMAX und VNOM on page 28.
high controller precision and response sensitivity static differential pressure transmitter -100 - 300 Pa consider suffi cient infl ow distance (≥ 2*D) maintenance-free measuring device MD, stainless
steel 1.4301 fast and stable volume fl ow control (< 2 s) measuring nozzle DD, galvanised steel and stainless
steel 1.4301
For the laboratory supply air (volume fl ow controller in steel design) the measuring nozzle DD (standard version) or op-tional the measuring cross with additional shield KD is de-livered.
The measuring device MD (patented by SCHNEIDER) of-fers the best quality/price ratio for the laboratory exhaust air (volume fl ow controller in PPs, PPs-el and PVC design) and is delivered by default.
Width Volume fl ow controller VMIN (at v = 2 m/sec), VMAX (at v = 6 m/s), VNOM (at v = 12 m/sec
Intermediate sizes on demand.Recommended volume fl ow VMAX at a fl ow velocity v = 6m/s.Consider planning instruction for volume fl ow control range VMIN, VMAX und VNOM on page 28.
VAV700Multi-functional air volume fl ow controller with integrated web server
Defi nitions:fm in Hz: mid-band frequency of the octave bandLW in dB/octave: sound power level determined in the echo chamberLWA in dB(A): overall noise level, A-ratedL in dB(A): noise level, A-rated, room attenuation of 8 dB/octave considered∆pg in Pa: total pressure difference (measured in front of and behind the volume fl ow controller)V in m3/h: volume fl owv in m/s: fl ow velocity
Defi nitions:fm in Hz: mid-band frequency of the octave bandLW in dB/octave: sound power level determined in the echo chamberLWA in dB(A): overall noise level, A-ratedL in dB(A): noise level, A-rated, room attenuation of 8 dB/octave considered∆pg in Pa: total pressure difference (measured in front of and behind the volume fl ow controller)V in m3/h: volume fl owv in m/s: fl ow velocity
VAV700Multi-functional air volume fl ow controller with integrated web server
Defi nitions:fm in Hz: mid-band frequency of the octave bandLW in dB/octave: sound power level determined in the echo chamberLWA in dB(A): overall noise level, A-ratedL in dB(A): noise level, A-rated, room attenuation of 8 dB/octave considered∆pg in Pa: total pressure difference (measured in front of and behind the volume fl ow controller)V in m3/h: volume fl owv in m/s: fl ow velocity
VAV700Multi-functional air volume fl ow controller with integrated web serverSound values ● Steel volume fl ow controller with measuring nozzle, round version
Nom
. siz
e in
mm
v in
m/s
V in
m3 /h
∆pg = 125 Pa ∆pg = 250 Pa ∆pg = 500 PaLW in dB/octave
Defi nitions:fm in Hz: mid-band frequency of the octave bandLW in dB/octave: sound power level determined in the echo chamberLWA in dB(A): overall noise level, A-ratedL in dB(A): noise level, A-rated, room attenuation of 8 dB/octave considered∆pg in Pa: total pressure difference (measured in front of and behind the volume fl ow controller)V in m3/h: volume fl owv in m/s: fl ow velocity
VAV700Multi-functional air volume fl ow controller with integrated web server
Table 11: Correction factor for fl ow noise and case-radiated noise
Defi nitions:fm in Hz: mid-band frequency of the octave bandLW in dB/Oktave: sound power level determined in the echo chamberLWA in dB(A): overall noise level, A-ratedL in dB(A): noise level, A-rated, room attenuation of 8 dB/octave considered∆pg in Pa: total pressure difference (measured in front of and behind the volume fl ow controller)V in m3/h: volume fl owv in m/s: fl ow velocityA in m2: airfl ow surface (W x H)CF correction factor
VAV700Multi-functional air volume fl ow controller with integrated web serverSound values ● Steel volume fl ow controller with measuring cross, rectangular version
Defi nitions:fm in Hz: mid-band frequency of the octave bandLW in dB/Oktave: sound power level determined in the echo chamberLWA in dB(A): overall noise level, A-ratedL in dB(A): noise level, A-rated, room attenuation of 8 dB/octave considered∆pg in Pa: total pressure difference (measured in front of and behind the volume fl ow controller)V in m3/h: volume fl owv in m/s: fl ow velocityA in m2: airfl ow surface (W x H)CF correction factor
VAV700Multi-functional air volume fl ow controller with integrated web server
1, 2, 3 Max. 3 static differential pressure sensorsOptional, up to 3 position-independent static differential pressure sensors with measuring ranges (-100 to +300 Pa), (-50 to +50 Pa) and / or (-100 to +1000 Pa) for vari-ous measuring tasks. The functionality for the static differential pressure sensor, like exhaust air / supply air, auxilary air, room pressure and / or duct pressure is freely confi gurable.
Lay out air hose kink-free in a loop against ingress of condensation
Check assignment of function to the air connec-tions!
Air hosing of static differential pressure sensors - Housing, right side
View: housing, right sideAir connection
(Example)Function Description
1 Exhaust air static differential pressure sensor -100 bis +300 Pa (connect plus and Minus hose)2 Auxilary air static differential pressure sensor -100 bis +300 Pa3 Room pressure static differential pressure sensor -50 bis +50 Pax Duct pressure static differential pressure sensor -100 bis +1000 Pa
Overview wiring and sensor hosing
i
i
1 2 3
X6VAV-
controller
VAV700
Actuator
Measuring system
Feedback Potentiometer
M
+ -
230 VAC Power lineX41
Temperature sensor, passive
Laptop
Optional Functional display
FA-2.0
BACnet/IP
OK
LOW
ECO
485 m³/h
Tag
X1 X8X9
X7
Digital In-/Output
X4
Analogue InputX3
Lay out air hose kink-free in a loop against ingress of
VAV700Multi-functional air volume fl ow controller with integrated web server
Plug / Socket
Jumper External connections - Housing, back side
X1 FA-2.0, Functional display, 6-pole socket RJ45X2 Not applicable for VAV700X3 Analogue Input
JP9 Universal Analogue Input (special equipment)X4 PT100/PT1000, passive Temperature sensor
JP1, JP2, JP3 PT100/PT1000-AdaptionX5 Not applicable for VAV700X6 NMQ-12, High speed Actuator Direct DriveX7 Digital I/O, 2 x Opto In, 2 x Relay Out
SW1, SW2 Optocoupler Input via external voltage or dry contactJP4, JP5 RC-element (time delay)
In use of 24 VAC JP4 and/or JP5 plugged. In use of 24 VDC JP4 and/or JP5 not plugged.
Plug / Socket
Jumper Internal connections - Motherboard
X20 CAN-Bus plug for extension purposesSW3 Terminator 120 Ohm for CAN-Bus
X21 Second FA-2.0, Functional display, 6-pole socket RJ45JP7, JP8 Plug in jumper JP7 and JP8 if you use one FA-2.0. In case of two FA-2.0 jumper JP7 and
JP8 are not plugged = open.X22 Second FA-1.0, Functional display, 8-pole socket RJ45X23 Actuator, linear, 0...10 VDC
JP6 Signal swap X23, Pin 4 and 6 Signal GND/Power GNDNETZ Internal connection to power supply boardCPU CPU-Board with Ethernet-connection X8 and X9 (external connection at the back side).
CPU-Bord must always be plugged here.EMDP DP-Board with 1, 2 or 3 free confi gurable differential sensors assembled.
Extension module EMDP must always be plugged here.EM1 Extension module e. g. EM10, EM50, EMSC etc. optional plug-inEM2 Extension module e. g. EM10, EM50, EMSC etc. optional plug-inEM3 Extension module e. g. EM10, EM50, EMSC etc. optional plug-inEM4 Extension module e. g. EM10, EM50, EMSC etc. optional plug-in
Connection description - Motherboard - Top view
For terminal connections please refer to the VAV700 Wiring and connection diagram!!
VAV700Multi-functional air volume fl ow controller with integrated web server
X1 Functional display 2. Generation (FA-2.0)The functional display has to be mounted visible for the operator (e.g. in the room).
Plug-in only the new functional display (FA-2.0 in X1 with 6-pin plug).
A second plug for the respective functional display generation (FA-2.0 = X21) is located on the inside on the motherboard.
ATTENTION on functional displays from the second generation! In use of one functional display FA-2.0 jumpers JP7 and JP8 must be plugged-in. In case of two functional dis-plays FA-2.0 jumpers JP7 and JP8 must be unplugged (=open).
These jumpers are located on the inside on the mother-board near the connector X21.
FA-2.0
i
X9 X8Grounding Cover
Grounding cable cover
X Function DescriptionX1 FA-2.0 Functional display 2. Generation,
FAZ0700 with graphic display, 6-pole plug
X2 FA-1.0 Not applicable for VAV700X3 A-In Analog InputX4 PT100 or
PT1000Temperature sensor input PT100 or PT1000
X Function DescriptionX5 AFS100 Not applicable for VAV700
X6 Actuator High speed damper actuatorNMQ-12, Direct-Drive-Mode
X7 Digital IN/OUT 2 x Optocoupler Input, 2 x Relay Output 2 x changeover 24 VAC/3 A
VAV700Multi-functional air volume fl ow controller with integrated web serverConnection overview
Motherboard - Case open
Frontwith internal connections
Left sidefor Power Supply, Light and Auxilary
air
Right sidefor differential
presssure sensor connection
Back sidewith external connections
Plug / Socket
Minimum confi guration required for FC700, VAV700, DPC700
CPU CPU-Board with Ethernet-connection X8 and X9 (external connection at the back side). CPU-Bord must always be plugged here.
EMDP DP-Board with 1, 2 or 3 free confi gurable differential sensors assembled. Extension module EMDP must always be plugged here.
EM1 Extension module e. g. EM10, EM50 etc. optional plug-inEM2 Extension module e. g. EM10, EM50 etc. optional plug-inEM3 Extension module e. g. EM10, EM50 etc. optional plug-inEM4 Extension module e. g. EM10, EM50 etc. optional plug-in
CPU-Borad with Ethernet-sockets
X8, X9
EMDPwith 1, 2 or 3 static
differential pressure sensors
EM1 till EM4 forExtension modules, e. g. EM10, EM50, EMSC etc.
VAV700Multi-functional air volume fl ow controller with integrated web server
GeneralNominal voltage 230 V AC/50/60 Hz/+-15 %Max. charging rate 200 mAMax. power input 35 V ARecovery time 600 msOperational temperature 0 OC to +55 OCHumidity max. 80 % relative, non-
condensingExternal supply 24 V AC/50/60 Hz/+-10 %Power input 20 V A
HousingProtection class IP 20Material steel plateColour white, RAL 9002Dimensions (LxWxH) (290 x 208 x 100) mmWeight approx. 2,8 kgAppliances terminals screw-type terminal 1,5
mm2
Relay outputsNumber 1 light relayOperating principle make contactMax. switching voltage 24 V ACMax. steady current 3 A
Digital inputs (galvanically isolated)Number 2 optocouplerMax. input voltage 24 V DC +-15 %Max. input circuit 10 mA (per input)