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Belt WeighingSpeed Sensors
Milltronics TASS
4/30 Siemens WT 10 2009
4
n Overview
Milltronics TASS is a compact low-profile, wheel-driven return
belt speed sensor, ideal for use on mobile crushers and in
con-stricted spaces.
n Benefits
Rugged design
Easy, low cost installation
Compact, low-profile speed sensor
IP65 rated
n Application
Milltronics TASS speed sensor operates in conjunction with a
conveyor belt scale, providing signals to an integrator
(Milltron-ics BW100, BW500, or SIWAREX FTC) which computes the rate
of material being conveyed. The trailing arm speed sensor mon-itors
conveyor belt speed, with the output signal transmitted by cable
connection to the integrator.
Easily installed close to the belt scale assembly, the TASS
pro-vides a signal generated as the wheel rotates on the return
belt. Pulses are generated by the internal proximity switch
detecting the rotation of the five spoked wheel. The TASS is
mounted to the static beam of the belt scale or to a structural
cross member via a pivoting bracket assembly.
The TASS is a compact, low-profile, rugged speed sensor, most
often used on mobile crusher applications where space is lim-ited.
The TASS output can be applied to any Milltronics belt scale
integrator.
n Design
Installation
TASS Installation
n Technical specifications Mode of operation
Measuring principle Proximity sensor provides pulse to
integrator
Typical application Mobile crusher
Input Bi-directional wheel rotation
25 ... 350 rpm
Output Inductive proximity sensor
Open collector, NPN, sinking output, max. 200 mA
Pulses: 5 per revolution
9.947 pulses/m, 3.03 pulses/ft
Rated operating conditions
Operating temperature -25 ... +70 C (-13 ... +158 F)
Degree of protection IP65
Design
Trailing arm assembly Painted mild steel
Wheel 160 mm (6.3) diameter castaluminum with polyurethane
tread
Power supply 10 ... 35 V DC, 15 mA at24 V DC maximum
Wiring
Brown + Excitation (10 ... 35 V DC)
Black + Signal
Blue - Common
Interconnection wiring(to integrator)
2 m, 3 conductor shielded PVC cable, 3 x 0.25 mm (23 AWG),
protected with 1000 mm offlexible conduit
300 m (1000 ft) maximum cable run
Approvals CE, C-TICK
TASS
Siemens Milltronics belt scale
Note: The TASS can be mounted tothe belt scale static beam as
shown,or to a conveyor cross member or toa non-weighing ilder
frame.
Siemens AG 2009
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Belt WeighingSpeed Sensors
Milltronics TASS
4/31Siemens WT 10 2009
4
C) Subject to export regulations AL: N, ECCN: EAR99
n Dimensional drawings
TASS dimensions
Selection and Ordering data Order No.
Milltronics TASS Speed SensorCompact, low-profile, wheel driven
return belt speed sensor for belt conveyors; ideal for use on
mobile crushers and in constricted spaces.
C) 7MH7131-
7777 0
Model
5 pulses per revolution 1
Fabrication
Standard, polyester painted mild steel A
Stainless steel 304 (1.4301) B
Note: Wheel is aluminum for all versions
Mounting options
Complete with standard mounting kit A
Approvals
CE, C-TICK 1
Instruction manual
TASS Instruction Manual, Multi-languageNote: The instruction
manual should be ordered as a separate item on the order.
C) 7ML1998-5HL61
This device is shipped with the Siemens Milltronics manual CD
containing the complete instruction manual library.
Spare parts
TASS Wheel 7MH7723-1AN
TASS Proximity Switch 7MH7723-1AP
TASS Wheel, stainless steel sealed bearing 7MH7723-1GW
Selection and Ordering data Order No.
Milltronics TASS Speed SensorCompact, low-profile, wheel driven
return belt speed sensor for belt conveyors; ideal for use on
mobile crushers and in constricted spaces.
C) 7MH7131-
7777 0
TASS Mounting Bracket
567 mm(22.32)
534 mm(21.02)
50 mm(1.97)
160 mm(6.3) dia.
508 mm(20)
conduit fittingM16
158 mm(6.22)
66 mm(2.6)
53 mm(2.09)
48 mm(1.89)
60 mm(2.36)
20 mm(0.79)
9 mm (0.35),2 places
6 mm (0.24),2 places
12 mm (0.48),2 places
25 mm(0.89)
40 mm(1.57)
40 mm(1.57)
105 mm(4.13)120 mm(4.72)
Siemens AG 2009
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Belt WeighingSpeed Sensors
Milltronics RBSS
4/32 Siemens WT 10 2009
4
n Overview
Milltronics RBSS is a high resolution, wheel-driven return belt
speed sensor.
n Benefits
Rugged design
IP65 rated
Easy, low cost installation
Accurate belt speed detection
n Application
Milltronics RBSS monitors conveyor belt speed, with the output
signal transmitted by cable connection to the integrator
(Milltroncs BW100, BW500, or SIWAREX FTC).
Easily installed close to the belt scale assembly, the RBSS
pro-vides a signal generated as the wheel on the sensor rotates on
the return belt. To secure this cost-effective unit in place,
position a cross bar between stringers - either just before or
after a return belt idler, or use the optional mounting bracket.
The weight of the RBSS ensures positive rotation of the wheel in
the middle of the return belt, and pulses from the magnetic sensor
are generated by the rotation of the 60 toothed speed sprocket
driven by the wheel.
The RBSS output can be applied to any Milltronics belt scale
in-tegrator.
n Design
Installation
RBSS installation
stringer
cable
belt
wheel
stringer
24 mm (1) dia.cross bar(customersupplied)
24 mm (1) washers,2 places(customer supplied)
return belt travel
RBSS
RBSS Standard Mounting
RBSS with Optional Mounting Bracket
Siemens Milltronicsbelt scale
RBSS
Siemens AG 2009
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Belt WeighingSpeed Sensors
Milltronics RBSS
4/33Siemens WT 10 2009
4
n Technical specifications
1) EMC performance available upon request.2) Approvals for RBSS
IS are based on internally mounted NAMUR slotted
proximity switch (Pepperl+Fuchs #NJ0.8-5GM-N) and use of
suitable IS Switch Isolator (Amplifier). Please see RBSS
instruction manual for more information.
3) Approval ratings for the Proximity Switch and IS Switch
Isolator are the property of Pepperl+Fuchs. Copies of these
Approval Certificates may be obtained at
http://www.siemens.com/processautomation.
Mode of operation
Measuring principle Proximity sensor provides pulse to
integrator
Typical application Aggregate belt conveyors
Input Wheel rotation 2 ... 450 rpm,bi-directional
Output 60 pulses per revolution, 2 ... 450 Hz, 150.4 pulses/m
(4.58 pulses/ft)
RBSS: open collector sinking output, max. 17 mA
RBSS IS:load current, 0 ... 15 mA
Rated operating conditions
Ambient temperature RBSS: -40 ... +105 C(-40 ... +220 F)
RBSS IS: -25 ... +100 C(-14 ... +212 F)
Degree of protection IP65
Design
Trailing arm Painted mild steel
Sensor wheel 127 mm (5) diameter,polyurethane tread
Power supply RBSS: 5 ... 30 V DC, 10 mA
RBSS IS: 5 ... 25 V DC fromIS Switch Isolator
Interconnection wiring(to integrator)
RBSS: 3 m, 3 conductor 22 AWG shielded cable - 300 m (1000 ft)
maximum
cable run
RBSS IS: 2 m, 2 conductor26 AWG PVC covered cable
- 300 m (1000 ft.) maximumcable run to IS switch isolator
- 300 m (1000 ft.) maximumcable run from IS switch isola-tor and
integrator
Approvals
RBSS CE, C-TICK1)
RBSS IS (with suitable IS switch iso-lator or Switch
Amplifier)2)
ATEX II 2 G EEx ia IIC T6
CSA/FM Class I, Div. 1, Groups A, B, C, and D, Class II, Div. 1,
Groups E, F, and G (system ap-proval)
CE, C-TICK2)
Proximity Switch Approval Ratings (Pepperl+Fuchs
#NJ0.8-5GM-N)
ATEX II 2 G EEx ia IIC T6
CSA/FM Class I, Div. 1, Groups A, B, C, and D, Class II, Div. 1,
Groups E, F, and G (system ap-proval)
Optional Switch Isolator (required for RBSS IS)3)
Pepperl+Fuchs #KFA5-SOT2-Ex2 or #KFA6-SOT2-Ex2
ATEX II (1) G [EEX ia] IIC
CSA/FM: Class 1, Div. 1, Groups A, B, C, and D. Class II, Div.
1, Groups E, F, and G
Selection and Ordering data Order No.
Milltronics RBSS Speed SensorA high resolution wheel-driven
return belt speed sensor
C) 7MH7134-
77777
Model
60 pulses per revolution 2
Fabrication
Standard, polyester painted mild steel A
Mounting options
With mounting kit B
Approvals
CE, C-TICK, ATEX II 2 G, EEx ia IIC and CSA/FM Class I, Div. 1,
Groups A, B, C and D, Class II Div. 1, Groups E, F and G1)
1) Approvals option 2 requires use of Switch Isolator to
interface with the belt-scale integrator.
2
CE, C-TICK 3
Switch isolator
Not required 0
115 V AC2)
2) Required with RBSS IS
1
230 V AC2) 2
Instruction manual
RBSS Instruction Manual, Multi-languageNote: The instruction
manual should be ordered as a separate item on the order.
C) 7ML1998-5GX63
This device is shipped with the Siemens Milltronics manual CD
containing the complete instruction manual library.
Spare parts
Wheel, 127 dia-polyurethane, sealed bearing C) 7MH7723-1FX
Mounting kit, spare C) 7MH7723-1AU
Proximity Switch C) 7MH7723-1GA
Switch, inductive, NJ0.8-5GM-N (Approvals option 2)2)
C) 7MH7723-1AS
P & F Switch Isolator, 115 V AC2) 7MH7723-1EB
P & F Switch Isolator, 230 V AC2) 7MH7723-1EC
Wheel and shaft, 152 mm dia.3)C)
7MH7723-1EN
60 tooth gear3)
3) For use with old style RBSS PBD-51033452C) Subject to export
regulations AL: N, ECCN: EAR99
C) 7MH7723-1EQ
Bearing (two required)3) C) 7MH7723-1ER
Siemens AG 2009
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Belt WeighingSpeed Sensors
Milltronics RBSS
4/34 Siemens WT 10 2009
4
n Dimensional drawings
Siemens AG 2009
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Belt WeighingSpeed Sensors
Milltronics MD-36
4/35Siemens WT 10 2009
4
n Overview
Milltronics MD-36 is a general purpose and hazardous rated
shaft-driven speed sensor.
n Benefits
Standard aluminium or optional stainless steel versions
avail-able for corrosive environments
Hazardous area approved (MD-36 and MD-36 IS aluminum)
High resolution, suitable for low or varying shaft speeds
Bi-directional for either clockwise or anti-clockwise belt
travel, eliminating errors due to vibration
Pulley shaft or motor shaft-driven
n Application
Milltronics MD-36 speed sensor operates in conjunction with a
conveyor belt scale, providing a signal to an integrator
(Miltronics BW100 or BW500) which computes the rate of mate-rial
being conveyed.
The sensor is directly coupled to the motor or pulley shaft to
en-sure accurate belt-travel readout, eliminating problems caused
by belt slippage or material build-up.
The MD-36 converts shaft rotation into a pulse train of 36
pulses per revolution using high precision dual optocouplers. The
digi-tal signal is transmitted as speed input to any Milltronics
integra-tor for calculation of belt speed, flow rate and totalized
weight.
This high resolution speed sensor provides a frequency signal
proportional to the shaft speed, enabling low or varying shaft
speeds to be read accurately. The quadrature type circuitry in the
MD-36 non-IS models prevents erroneous speed signals due to
vibration or shaft oscillation.
The MD-36 is easily mounted and is bi-directional for either
clockwise or anti-clockwise rotation.
n Design
Mounting1)
Machining on tail/bend pulley shaft per Detail A (by customer)
to accommodate Siemens Milltronics speed sensor when tail or bend
pulley is not supplied by Siemens Milltronics. Arresting bracket is
an anti-rotation device only and must not secure or support the
speed sensor. Bearing life would be greatly reduced if speed sensor
is not free to float. Use anti-rotation spring to prevent
mechanical oscillation of speed sensor. Grease mating surfaces to
prevent seizing.
MD-36 mounting
1) Can also be mounted to motor shaft with rubber connector
Detail A
Detail B
pulley shaft
arresting bracketspring
angle iron (by customer)
64 mm(2.5)
M8 or5/16-18 UNC
set screw(by customer)
see Detail A
B
B
25 mm(1)
16 mm (0.63) dia.16.07 mm (0.633)
secure withhook or bolt
127 mm(5) approx.
anti rotation springarresting bracket
angle iron
.254mm (.010") A
A
Siemens AG 2009
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Belt WeighingSpeed Sensors
Milltronics MD-36
4/36 Siemens WT 10 2009
4
n Technical specifications
1) Approvals for MD-36 IS are based on internally mounted NAMUR
slotted proximity switch (Pepperl+Fuchs #SJ3.5N) and use of
suitable IS Switch Isolator (Amplifier). Please see MD-36
instruction manual for more informa-tion.
2) EMC performance available upon request.3) Approval ratings
for the Proximity Switch and IS Switch Isolator are the
property of Pepperl+Fuchs. Copies of these Approval Certificates
may be obtained at http://www.siemens.com/processautomation.
Belden is a registered trademark of Belden Wire and Cable
Company.
Mode of operation
Measuring principle Pulse from shaft rotation using slotted
optical switch
Typical application General purpose speed sensor
Input Shaft rotation 0 ... 2,000 rpm,bi-directional
Output MD-36: open collector sinking output, max. 25 mA at 15 V
DC
36 pulses/revolution:0 ... 2,000 rpm = 0 ... 1200 Hz
MD-36 IS:load current 0 ... 15 mA
Input:output 1:1 (speed ratio)
Rated operating conditions
Ambient temperature -40 ... +55 C (-40 ... +130 F)
Design
Enclosure MD-36 and MD-36 IS:painted aluminum rating Type 4/
NEMA 4/IP65
MD-36A: painted aluminum - general purpose
MD-36SS: stainless steel 304 (1.4301), corrosive
applications
Power supply MD-36/MD-36A/MD-36SS:+15 V DC, 25 mA from
integrator
MD-36 IS: +5 ... 25 V DC fromIS switch isolator
Cable
Option Belden 8770, 3-wire shielded, 18 AWG (0.75 mm) or
equivalent
Max. run 305 m (1000 ft)
Approvals
MD-36 CSA/FM: Class II, Div. 1, Groups E, F, G and Class III
ATEX II 2D, Ex tD A21 IP65 T70 C
CE, C-TICK2)
MD-36 IS (with suitable IS switch isolator)1)
CSA/FM: Class I, Div. 1,Groups A, B, C, D and Class II, Div. 1,
Groups E, F, G (system approval)
ATEX II 2G, EEx [ia] IIC T6
CE, C-TICK2)
MD-36A, MD-36SS CE, C-TICK2)
Optional Switch Isolator(required for MD-36 IS)3)
Pepperl+Fuchs #KFA5-SOT2-Ex2 (115 V AC) or #KFA6-SOT2-Ex2 (230 V
AC)
CSA/FM: Class 1, Div. 1,Groups A, B, C, D and Class II, Div. 1,
Groups E, F, G (system approval)
ATEX II 1G, EEx [ia] IIC
Selection and Ordering data Order No.
Milltronics MD-36 Speed SensorA general purpose, high
resolution, and hazardous rated shaft-driven speed sensor for use
with Milltronics belt scales, bend pulley, tail pulley or snub
pulley mounted.
C) 7MH7132-
77777
Model
MD-36A: CE, C-TICK; 36 pulses per revolution 1
MD-36 IS: CSA/FM Class 1, Div. 1, Groups A, B, C, D and Class
II, Div. 1, Groups E, F, G; ATEX II 2G, EEx [ia] IIC T6; CE,
C-TICK; 36 pulses per revolutionNote: MD-36 IS requires IS switch
isolator to inter-face with belt scale integrator.
4
MD-36: CSA/FM Class II, Div. 1, Groups E, F, G and Class III;
ATEX II 2D, Ex tD A21 IP65 T70 C; CE, C-TICK; 36 pulses per
revolution
5
Enclosure
Painted cast aluminum, 1/2 NPT connection A
Stainless steel, 304 (1.4301), cable connector for 3 to 9 mm
(0.35) cable
B
Coating
None A
Epoxy paint, for cast aluminum enclosure only B
Circuit board
Standard 1
Conformal coating (tropical package), not available for MD-36
IS
2
Switch isolator
Not required 0
115 V AC1)
1) Required with MD-36 ISC) Subject to export regulations AL: N,
ECCN: EAR99
1
230 V AC2) 2
Instruction manual
MD-36A/MD-36, English C) 7ML1998-5DB02
MD-36A/MD-36, German C) 7ML1998-5DB32
MD-36A/MD-36, Spanish C) 7ML1998-5DB21
MD-36A/MD-36, French C) 7ML1998-5DB12
Note: The instruction manual should be ordered as a separate
item on the order.
Optional equipment
Threaded shaft coupling 7MH7723-1GH
P+F IS switch isolator, 115 V AC, required with MD-36 IS
7MH7723-1EB
P+F IS switch isolator, 230 V AC, required with MD-36 IS
7MH7723-1EC
Spare parts
MD-36 bearing housing assembly 7MH7723-1EE
MD-36 stainless steel [304 (1.4301)] bearing housing
assembly
7MH7723-1EF
MD-36A/MD-2000A bearing housing assembly C) 7MH7723-1EG
MD-2000A stainless steel [304 (1.4301)] bearing housing
assembly
7MH7723-1EH
MD-36A/MD-36 circuit card C) 7MH7723-1EJ
MD-36A/MD-36 toothed disc 7MH7723-1EK
MD-2000A circuit card, without encoder C) 7MH7723-1EL
MD-2000A encoder 7MH7723-1EM
Switch, inductive, SJ3.5-N for MD-36 IS 7MH7723-1ED
Tension spring 7MH7723-1CP
Arresting bracket, aluminum 7MH7723-1DY
Arresting bracket, stainless steel 304 (1.4301) 7MH7723-1EA
MD-36A/MD-36 circuit card, conformal coated 7MH7723-1GC
Siemens AG 2009
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Belt WeighingSpeed Sensors
Milltronics MD-36
4/37Siemens WT 10 2009
4
n Dimensional drawings
MD-36 dimensions
n Schematics
Connections
(See instruction manual for MD-36 IS wiring details.)
Determine the pulley shaft rotation on the end of the pulley
shaft to which the MD-36 is attached.
If the pulley shaft is rotating clockwise, connect the
appropri-ate wire to terminal 2. If the pulley shaft is rotating
counter clockwise, connect the appropriate wire to terminal 3.
Do not common terminals two or three at the same time.
Ground shield of cable at integrator only.
Description Terminal
+ 15 V DC (red) 1
speed out - CW (white) 2
speed out - CCW (blue) 3
common (black) 4
ground G
Siemens AG 2009
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Belt WeighingSpeed Sensors
Milltronics MD-256
4/38 Siemens WT 10 2009
4
n Overview
Milltronics MD-256 is a high resolution shaft-driven
speedsensor.
n Benefits
Light and rugged design, IP65 rated
Compact and economical
Easy, low-cost installation
Accurate belt speed detection
High resolution, suitable for low or varying shaft speeds
Bi-directional for either clockwise or counter-clockwise shaft
rotation
n Application
Milltronics MD-256 speed sensor operates in conjunction with a
conveyor belt scale, providing a signal to an integrator which
computes the rate of material being conveyed. At only 1.22 kg (2.68
lbs), it is one of the lightest and most durable units ever
de-veloped for monitoring conveyor belt speed. With its rugged cast
aluminium housing, it is suitable for outdoor installation, and its
low weight prolongs bearing life.
It is directly coupled to a rotating tail or bend pulley shaft
to en-sure accurate belt-travel readout, eliminating problems
caused by belt slippage or material build-up. The MD-256 converts
shaft rotation into a pulse train of 256 pulses per revolution
using a high precision rotary optical encoder. The digital signal
is trans-mitted as speed input to any Milltronics integrator for
calculation of belt speed, flow rate and totalized weight.
This high resolution speed sensor provides a frequency signal
proportional to the shaft speed, enabling low or varying shaft
speeds to be read accurately. The quadrature type shaft en-coder
prevents erroneous speed signals due to vibration or shaft
oscillation. The MD-256 is easily mounted and is bi-directional for
either clockwise or anti-clockwise belt travel.
n Technical specifications
Mode of operation
Measuring principle Pulse from shaft rotation using high
precision rotary optical encoder
Typical application When a high resolution speed sensor is
required
Input Shaft rotation 0.5 ... 470 rpm,bi-directional
Output Unidirectional open collector sinking output
+10 ... +30 V DC, 25 mA max.
256 pulses per revolution
2 to 2000 Hz
Rated operating conditions
Ambient temperature -40 ... +55 C (-40 ... +131 F)
Degree of protection NEMA 4X, Type 4X, IP65
Design
Enclosure Rated NEMA 4X, Type 4X, IP65
Painted aluminum
Stainless Steel (Optional)
Power supply +10 to +30 V DC, 30 mA max.
Cable
Option 3-wire shielded,0.75 mm (18 AWG)
Max. run 305 m (1000 ft)
Approvals CSA/FM Class II, Div.1, Groups E, F, G and Class
III
ATEX II 2D Ex tD A21 IP65 T70 C
IECEx Ex tD A21 IP65 T70 C
CE, C-TICK
Selection and Ordering data Order No.
Milltronics MD-256 Speed SensorA high resolution shaft-driven
speed sensor used for Milltronics belt scales.
C) 7MH7130-
7777 0
Enclosure
Polyester painted aluminum, NEMA 4X 1
304 (1.4301) stainless steel, NEMA 4X 2
Conduit entry
1/2 NPT A
M20 C
Approvals
CSA/FM Class II, Div. 1, Groups E, F, G and Class III
B
ATEX II 2D Ex tD A21 IP65 T70 C, IECEx Ex tD A21 IP65 T70 C, CE,
C-TICK
C
Connections
Standard, up to 2 integrators 1
Multiple, up to 10 integrators 2
Instruction manual
English C) 7ML1998-5FJ02
German C) 7ML1998-5FJ32
French C) 7ML1998-1FJ12
Dutch C) 7ML1998-1FJ41
Note: The instruction manual should be ordered as a separate
item on the order.
Spare parts
Threaded shaft coupling 7MH7723-1GH
MD-256 circuit card with encoder, up to 2 integrators
C) 7MH7723-1CE
MD-256 circuit card with encoder, up to 10 integrators
C) 7MH7723-1CF
MD-256 encoder C) 7MH7723-1CL
MD-256 bearing housing assembly C) 7MH7723-1CK
Rubber coupling C) 7MH7723-1CM
Coupling hub C) 7MH7723-1CN
Enclosure cover 7MH7723-1CJ
Update kit, up to 2 integrators1)
1) Updates original MD-256 design. Includes card complete with
encoder, coupling and hub.
C) Subject to export regulations AL: N, ECCN: EAR99
C) 7MH7723-1CG
Update kit, up to 10 integrators1) C) 7MH7723-1CH
Siemens AG 2009
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Belt WeighingSpeed Sensors
Milltronics MD-256
4/39Siemens WT 10 2009
4
n Design
Mounting
MD-256 mounting
Siemens AG 2009
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Belt WeighingSpeed Sensors
Milltronics MD-256
4/40 Siemens WT 10 2009
4
n Dimensional drawings
MD-256 dimensions
n Schematics
Connections
Determine the pulley shaft rotation on the end of the pulley
shaft to which the MD-256 is attached.
If the pulley shaft is rotating clockwise, connect the
appropri-ate wire to terminal 2. If the pulley shaft is rotating
counter-clockwise, connect the appropriate wire to terminal 3.
Do not connect terminals two or three at the same time.
Ground shield of cable at integrator only.
50 mm(1.96)
102 mm(4.00)
89 mm(3.5)
60 mm(2.38)
305 mm(12.0)
131 mm(5.16)
159 mm(6.25)
111 mm(4.36)
102 mm(4.00)
rod :8.0 mm(5/16)
shaft :15.9 mm(5/8)
NPT conduit entrance(optional PG13.5 adapter available)
NPT conduit entrance(optional PG13.5 adapter available)
Description Terminal
+10 to +30 V DC 1
speed out-CW 2
speed out-CCW 3
common 4
ground G
Siemens AG 2009
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Belt WeighingSpeed Sensors
SITRANS WS100
4/41Siemens WT 10 2009
4
n Overview
SITRANS WS100 speed sensor is a compact, medium-resolu-tion,
pulley shaft-driven belt speed sensor with magnetic mount-ing. It
is ideal for aggregate and mineral processing industries.
n Benefits
Small, light-weight
Good resolution for accurate measurement, suitable for vary-ing
shaft speeds
Long bearing life
n Application
SITRANS WS100 speed sensor operates in conjunction with a
conveyor belt scale, providing a signal to an integrator
(Milltronics BW100 or BW500, or SIWAREX FTC module) which computes
the rate of material being conveyed. It is lightweight at 1.22 kg
(2.68 lbs) and durable, for easy installation and pro-longed
bearing life.
The WS100 converts shaft rotation into a pulse train of 8 pulses
per revolution. These pulses are typically fed into a Milltronics
belt scale integrator. The integrator interprets the pulses and
uses them in the calculation of belt speed, flow rate, and material
totalization. In non-belt scale applications, the WS100 can be used
to monitor rotational speed when directly connected to a PLC.
The WS100 IS (Intrinsically Safe) version contains an inductive
proximity switch which transmits the pulses via a Switch Isolator
for hazardous area locations.
n Technical specifications
Mode of op eration
Measuring principle Proximity sensor provides pulse to
integrator
Typical application Aggregate belt conveyors
Input shaft rotation 15 ... 1500 rpm,bi-directional
shaft rotation 15 ... 300 rpm,bi-directional with magnetic
con-nector
Output 8 pulses per revolution
0 ... 200 Hz, 0 ... 40 Hz withmagnetic connection
WS100 standard: open collector sinking output, 25 mA
WS100 IS: load current,0 ... 15 mA
Integrator minimum usablefrequency 2 Hz
Rated operating conditions
Standard -40 ... +110 C (-40 ... +230 F)
Intrinsically Safe -25 ... +100 C (-14 ... +212 F)
Degee of protection IP67
Enclosure polypropylene base and target enclosure with 304
(1.4301) stain-less steel access cover
304 (1.4301) stainless steel shaft, bearings and hardware
Power
Standard 4.5 ... 28 V DC, 16 mA
Intrinsically Safe 5 ... 25 V DC fromIS Switch Isolator
Cable
Standard 3 m (10 ft), 3 conductor 22 AWG (0.324 mm), PVC
shielded ca-ble
300 m (1000 ft) maximum cable run
Intrinsically Safe 2 m (6.5 ft), 2 conductor 26 AWG (0.129 mm),
PVC covered cable
300 m (1000 ft) maximum cable run to IS switch isolator
300 m (1000 ft) maximum cable run from IS switch isolator and
integrator
Certificates and approvals
Standard CE, C-TICK
Intrinsically Safe CE, ATEX and CSA approved, Pepperl + Fuchs
Proximity Switch and IS Switch Isolator
Siemens AG 2009
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Belt WeighingSpeed Sensors
SITRANS WS100
4/42 Siemens WT 10 2009
4
Selection and Ordering data Order No.
SITRANS WS100 Speed Sensor
A compact, medium-resolution, pulley shaft-driven belt speed
sensor with magnetic mounting; ideal for aggregate and mineral
processing industries.
C) 7MH7176-
77777
Model
8 PPR 1
Fabrication
Polycarbonate construction with 304 stainless steel sensor
cover
A
Mounting
M12X1.75 threaded shaft A
Magnetic connector B
Approvals
Standard CE, C-TICK 0
CE, C-TICK, ATEX II 2 G, Eex ia IIC and CSA/FM Class 1, Div. 1,
Groups A, B, C and D, Class II Div. 1, Groups E, F and G1)
1) Approvals option 1 requires use of Switch Isolator to
interface with the belt-scale integrator.
C) Subject to export regulations AL: N, ECCN: EAR99
1
Switch Isolator
Not required 0
115 V AC (required with IS option 1) 1
230 V AC (required with IS option 1) 2
Instruction manual
SITRANS WS100, English C) 7ML1998-5LU01
SITRANS WS100, GermanNote: The instruction manual should be
ordered as a separate item on the order.
C) 7ML1998-5LU31
This device is shipped with the Siemens Milltronics manual CD
containing the complete instruction manual library.
Spare Parts
Switch, Standard Magnetic Pickup C) 7MH7723-1GA
Switch, inductive, NJO.8-5GM-N for Approvals option 1
C) 7MH7723-1AS
WS100 Magnetic Connector C) 7MH7723-1GF
P & F Switch Isolator, 115 V AC, required for Approvals
option 1
7MH7723-1EB
P & F Switch Isolator, 230 V AC, required for Approvals
option 1
7MH7723-1EC
Siemens AG 2009
-
Belt WeighingSpeed Sensors
SITRANS WS100
4/43Siemens WT 10 2009
4
n Design
The input shaft on the SITRANS WS100 is coupled to the rotating
shaft on a belt-driven pulley with a tapped hole, and is externally
supported. The units flexible arresting strap stops it from
rotat-ing with the shaft, without causing bearing stress, and can
be fit-ted to any rigid member close to the sensor.
When mounting, ensure the unit and the pulley shaft are
concen-tric to avoid stresses on the units bearings.
For mounting using the magnetic connector, ensure the face of
the rotating shaft on the belt driven pulley is flat, and has no
burrs or damage that may prevent flush mounting of the mag-netic
connector. Attach the SITRANS WS100 speed sensor to the shaft; the
magnetic connector will center itself as the belt driven pulley
rotates.
WS100 installation
Siemens AG 2009
-
Belt WeighingSpeed Sensors
SITRANS WS100
4/44 Siemens WT 10 2009
4
n Dimensional drawings
WS100 dimensions
Siemens AG 2009
-
Belt WeighingSpeed Sensors
Milltronics Bend Pulleys
4/45Siemens WT 10 2009
4
n Overview
Return belt driven pulley provides rotation for shaft-driven
speed sensors. 4.5 size is self-cleaning.
Selection and Ordering data Order No.
Milltronics Bend Pulley, 4.5 and 6 diameterReturn belt driven
pulley provides rotation for shaft-driven speed sensors. 4.5 size
is self-cleaning.
C) 7MH7170-
7777 0
Size
4.5 diameter self cleaning 1
6 diameter 2
Belt width and 'A' dimension
18, A=27 (686 mm), 20, A=29 (737 mm) A
24, A=33 (838 mm) B
30, A=39 (991 mm) C
36, A=45 (1143 mm) E
42, A=51 (1295 mm) G
48, A=57 (1448 mm) H
54, A=63 (1600 mm), for 6 diameter only K
60, A=69 (1753 mm), for 6 diameter only L
66, A=75 (1905 mm), for 6 diameter only M
Finish
Standard, polyester painted mild steel A
316 (1.4401) stainless steel1)
1) 316 (1.4401) stainless steel shaft on 4.5 diameter models
only
B
316 (1.4401) stainless steel2)
2) With corrosion resistant bearings, 316 (1.4401) stainless
steel shaft on 4.5 diameter models only
C
Epoxy painted3)
3) For 6 diameter models only
C) Subject to export regulations AL: N, ECCN: EAR99
D
Epoxy painted, with corrosion resistant bearings3) E
Bearings
Imperial size 0
Metric size 1
No bearings 2
Instruction manual
EnglishNote: The instruction manual should be ordered as a
separate item on the order.
C) 7ML1998-5DE01
This device is shipped with the Siemens Milltronics manual CD
containing the complete instruction manual library.
Siemens AG 2009
-
Belt WeighingSpeed Sensors
Milltronics Bend Pulleys
4/46 Siemens WT 10 2009
4
C) Subject to export regulations AL: N, ECCN: EAR99
Selection and Ordering data Order No.
Milltronics Bend Pulley, 6 diameter with 1/4 laggingReturn belt
driven pulley provides rotation for shaft-driven speed sensorsThe
lagging offers self-cleaning advantages and ensures positive
rotation.
C) 7MH7171-
7777 0
Size
6 diameter with 1/4 lagging 3
Belt width and 'A' dimension
18, A=27 (686 mm), 20, A=29 (737 mm) A
24, A=33 (838 mm) B
30, A=39 (991 mm) C
36, A=45 (1143 mm) E
42, A=51 (1295 mm) G
48, A=57 (1448 mm) H
54, A=63 (1600 mm), for 6 diameter only K
60, A=69 (1753 mm), for 6 diameter only L
66, A=75 (1905 mm), for 6 diameter only M
Finish
Standard, polyester painted mild steel A
316 (1.4401) stainless steel B
316 (1.4401) stainless steel with corrosion resistant
bearings
C
Bearings
Imperial size 0
Metric size 1
No bearings 2
Instruction manual
EnglishNote: The instruction manual should be ordered as a
separate item on the order.
C) 7ML1998-5DE01
This device is shipped with the Siemens Milltronics manual CD
containing the complete instruction manual library.
Siemens AG 2009