Lodam Compressor Protection Modules Technical manual Version 3.0 SE-B1, B2, B3, B4
Lodam Compressor Protection Modules
Technical manualVersion 3.0
SE-B1, B2, B3, B4
Page 2
Contents1. Read this first . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1. Reading instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2. User manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3. Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4. How to . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5. Funtions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6. Examples of application use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6.1. Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7. Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
8. Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
9. Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
10. Trouble shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
11. Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
12. Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Technical manual SE-B1, SE-B2, SE-B3, SE-B4
Page 3
Page 4
1. Read this firstThe contents of this manual are subject to change without
notice. Lodam electronics holds the copyright to this user’s
manual. The user shall follow any instructions given in this
user manual entirely and not only partly. Any non-follow-
ing of this user manual result in exclusion of all warranties,
guarantees, and liabilities. Copyright© 2014 by Lodam
electronics a/s. All Rights Reserved.
Disposing of the parts of the controller:
INFORMATION FOR USERS ON THE
CORRECT HANDLING OF WASTE ELECTRI-
CAL AND ELECTRONIC EQUIPMENT (WEEE)
In reference to European Union directive 2002/96/
EC issued on 27 January 2003 and the related national
legislation, please note that:
1. WEEE cannot be disposed of as municipal waste and
such waste must be collected and disposed of sepa-
rately;
2. The public or private waste collection systems defined
by local legislation must be used. In addition, the equip-
ment can be returned to the distributor at the end of its
working life when buying new
equipment;
3. The equipment may contain hazardous substances:
the improper use or incorrect disposal of such may
have negative effects on human health and on the
environment;
4. The symbol (crossed-out wheeled bin) shown on the
product or on the packaging and on the instruction
sheet indicates that the equipment has been intro-
duced onto the market after 13 August 2005 and that it
must be disposed of separately;
5. In the event of illegal disposal of electrical and elec-
tronic waste, the penalties are specified by local waste
disposal legislation.
1.1. Reading instructionsThe following symbols are used to draw the reader’s
attention to different warning levels.
Important information.
Danger!! General danger.
Danger of electrical current or voltage.
1.2. User manualBefore installation the user should be thoroughly
familiarized with this user manual, especially with
purposes, installation and operation.
Special care should be taken when installing and connect-
ing external equipment (PTC sensor, high voltage etc) and
handling the modules correctly according to protection
against ESD.
Installation of the SE-B1/SE-B2/SE-B3/SE-B4
must be performed by authorized personnel only.
All warranties are excluded in case installation is
performed by unauthorized personnel or in case the
SE-B1/SE-B2/SE-B3/SE-B4 has not been correctly
installed.
1.3. SafetyThe SE-B1/SE-B2/SE-B3/SE-B4 is a protection
device and not a safety component according to
the Machinery Directive and can not be used in
“medical” or “life support” equipment.
Before plant commissioning the service technician shall
ensure that personal safety requirements are met in
conformity with the Machinery Directive on the basis of
safety estimations.
Electrical plant failures are to be immediately
solved, even though no immediate danger exists;
the SE-B1/SE-B2/SE-B3/SE-B4 and motor must
be without power.
Technical manual SE-B1, SE-B2, SE-B3, SE-B4
Page 5
2. GeneralThe protection devices SE-B1, SE-B2, SE-B3 and SE-B4.
Hereafter SE-Bxare used for protection of the motor
against overheating by monitoring motor temperature by
means of PTC-sensors mounted in the motors windings.
Further, other temperatures can be monitored by for
example mounting PTC-sensors in the discharge outlet
of a compressor, for monitoring the oil temperature or the
temperature in vessels.
In other areas where PTC-sensors are installed, they can
also be monitored by a SE-Bx protection module. Due to
their fast reaction time, good accuracy and built-in relay
they can be a good solution instead of a separate control-
ler. They can also be used as switch relays.
A SE-Bx is default wired up for lockout in case of an
overheat situation, but can also be used as a thermostat/
switch relay via the cool down period of the media sur-
rounding the PTC-sensor.
3. Definitions
Product range
Definitions
HW Hardware/electronics
NC Normally Closed (relay)
NO Normally Open (relay)
PTC Positive Temperature Coefficient (sensor element)
SE-Bx A SE-B1, SE-B2, SE-B3 or SE-B4 compressor protection module
Page 6
4. How toUse the SE-Bx in lockout mode
SE-B1/SE-B2/SE-B3
SE-B4
The wire jumper is default mounted in the two unnamed
terminals – located between terminals N and 12. In this
mode a fault condition will need a manual reset to release
the relay.
Use the SE-Bx in restart / hysteresis mode
SE-B1/SE-B2/SE-B3
SE-B4
The wire jumper between the two unnamed terminals is
removed.
After an overheat condition, the relay is energized again as
soon as the resistance is below the lower threshold level of
2.7 kOhm. There is no timer function in the SE-Bx.
Technical manual SE-B1, SE-B2, SE-B3, SE-B4
Page 7
5. FuntionsThe SE-Bx is a motor protection module. By monitoring
the resistance in a PTC sensor, it will open its relay when
the resistance of the PTC sensor increases above the limit
as shown below.
The PTC-sensor could for example be according to DIN
44081/82. The resistance of these PTC-sensors are not
linear, but gives a steep rise in resistance when the thresh-
old temperature of the PTC-sensor is reached. This is
detected by the protective device and the relay is released
and thereby cutting the control power as shown on the
diagram below.
RPTC
(PTC resistance)
Close relay
Closed
Open
Safety chain (NC)
12 11 14
12 11 14
Open relay
2,7kΩ 4,5kΩ
Relay
RPTC
(PTC resistance)
Not Lockout
Closed
Open
Safety chain (NC)
12 11 14
12 11 14
Lockout open relay
Lockout
2,7kΩ 4,5kΩ
Relay Since the increase in resistance is so steep, from 1 up to 9
PTC-sensors can be coupled in series without raising the
actual temperature threshold more than a few degrees
Celsius.
Default there is a restart blocking wire jumper to prevent
a motor from being started too soon after having been
overheated. A manual reset must be done by removing
power from the module for minimum 5 seconds and then
applying it again.
If the restart blocking wire jumper is removed, the relay
behaves like on the following diagram.
RPTC
(PTC resistance)
Close relay
Closed
Open
Safety chain (NC)
12 11 14
12 11 14
Open relay
2,7kΩ 4,5kΩ
Relay
RPTC
(PTC resistance)
Not Lockout
Closed
Open
Safety chain (NC)
12 11 14
12 11 14
Lockout open relay
Lockout
2,7kΩ 4,5kΩ
Relay
In this mode, there is a hysterese from 2,7kOhm to 4,5
kOhm. When the resistance in the PTC-sensors increases
above 4,5 kOhm, the relay is released. The relay is released
as long as the resistance is above 2,7 kOhm. When the
resistance comes below 2,7 kOhm, the relay is energized.
This hysteresis can be used for applications where the
media where the PTC-sensors are mounted has such a
large temperature inertia that this hysteresis is sufficient.
Page 8
6. Examples of application use
6.1. Connections
Terminal Description
L Power supply
N Neutral
11 Relay common
12 Relay NO – Error condition
14 Relay NC – Ok condition
Unnamed Lockout wire jumper
Compressor protection module with a direct starting
compressor
Method 1:
1918
1716
1514
1312
1110
98
76
54
32
1
L1 L2 L3 N PE
F11 0
Q1
F2 K1 11
F13
9
1U1
1W1
1V1
M1
M3
R1-
3
F34A
01
S1
L
1 2
11B
1B
2S
E-B
1S
E-B
2S
E-B
3S
E-B
4N
1214
R7
4 3
H1
F13
3
L N
T2
S0/
220
H2
K1 11
P>
F5 P<
F6 B1
K2T
18 K1 3/3/
3/12
/16
/17
18/1
9
F4K
1 11K
1 11K
1 11K
1 11
B2
Y2
Y3
K2T
R8
F12
4A
11
Ple
ase
see
deta
ilsre
gard
ing
conn
ectio
nin
side
the
term
inal
box
Option
Technical manual SE-B1, SE-B2, SE-B3, SE-B4
Page 9
Method 2:
1918
1716
1514
1312
1110
98
76
54
32
1
L1 L2 L3 N PE
F11 0
Q1
F2 K1 11
F13
9
1U1
1W1
1V1
M1
M3
R1.
.3
F34A
01
S1
L
12
11B
1B
2S
E-B
1S
E-B
2S
E-B
3S
E-B
4N
1214
R7
4 3
F13
3
H2
P>
F5
P<
F6
B1
K2T
18 K1 3/3/
3/10
/16 18
/19
K1 11
K1 11
K1 11
B2
Y2
Y3
K2T
R8
F12
4A
11P
leas
ese
ede
tails
rega
rdin
gco
nnec
tion
insi
deth
ete
rmin
albo
x
Option
S2
H1
K3
F4
Red
Bro
wn
Ora
nge
Bla
ck
K1 11
K3
9
11 13
K3
9Compressor protection module with a part winding
compressor.
Method 1:
1918
1716
1514
1312
1110
98
76
54
32
1
L1 L2 L3 N PE
F11 0
Q1
F2 K1 11
F13
9
1U1
1W1
1V1
M1
M3
R1.
.6
F34A
01
S1
L
12
11B
1B
2S
E-B
1S
E-B
2S
E-B
3S
E-B
4N
1214
R7
H1
3/3/
3/10
/15
/16/
18/1
9
K1
11 R8
F12
4A
11P
leas
ese
ede
tails
rega
rdin
gco
nnec
tion
insi
deth
ete
rmin
albo
x
K2 14
F14
9
2W1
2U1
2V1
145/
5/5/
17m
ax0.
5se
c
S2
F13
3
H2
P>
F5
P<
F6
B1
K2T
18 K1
K1 11
K1 11
B2
Y2
Y3
K2T
Option
K3
Red
Bro
wn
Ora
nge
Bla
ck
K1 11
K3
9K
39
F14
5
F4
K2 14
K1T
11 13
K1T
12 K2
15
Y1K
214 K1 11
Page 10
Method 2:
1918
1716
1514
1312
1110
98
76
54
32
1
L1 L2 L3 N PE
F11 0
Q1
F2 K1 11
F13
9
1U1
1W1
1V1
M1
M3
R1-
6
F34A
01
S1
L
1 2
11B
1B
2S
E-B
1S
E-B
2S
E-B
3S
E-B
4N
1214
R7
4 3
H1
F14
5
L N
T2
S0/
220
K1 11
P>
F5 P<
F6 B1
K2T
18 K1 3/3/
3/12
/16
/18
/19
F4K
111
K2
12K
111
K1
11
B2
Y2
Y3
K2T
R8
F12
4A
11
Ple
ase
see
deta
ilsre
gard
ing
conn
ectio
nin
side
the
term
inal
box
Option
K2 12
F14
9
2W1
2U1
2V1
F13
3
H2
K2
Y1
K1T
K1T
13K
212
5/5/
5/17
12m
ax0.
5se
c
Technical manual SE-B1, SE-B2, SE-B3, SE-B4
Page 11
Oil flow monitoring using the SE-B1/SE-B2/SE-B3/SE-B4
module:
13121110987654321
L1L2L3NPE
F1 10 Q1
F2
K19
F139
M1
M3
L 11 B1 B2
SE-B1SE-B2
N 12 14
H2
2/2/2/11/1213/16/17/1918/20/25
4/4/4/1624
S2
K2
5/5/5/10
12
F3 4A
0 1S1
K311
K29
11
12 14F7
123
789
L1
L2
L3
F8
H1
F132
K1T13
K312
K1
K29
K110
K110
K110
K312
K29
K3
2 - 3 s
K1T
P>F5
P<F6
K4T20
K5T22
9/13/18/25 9
K3T19
)( C1+
F9
R7
14
Page 12
Using the C1 electrolytic capacitor together with an addi-
tional time delay K3T will allow a temporary bridging of
the monitoring function.
Please note: The C1 electrolytic capacitor will be destroyed
if mounted with wrong polarity! Measure the polarity off
the two leads and connect the C1 according to the draw-
ing.
Legend for the schematic diagrams
B1/B2 Control unit
C1 Electrolytic capacitor
F1 Main fuse
F2 Compressor fuse
F3 Control circuit fuse
F4 Differential oil pressure switch
F5 High pressure limiter
F6 Low pressure limiter
F7 Control circuit switch
F8 Phase sequence control relay
F9 Oil flow switch
F12 Fuse for the crank case heater
F13/F14 Thermal motor overload relay
H1 Signal light “Over temperature”
H2 Signal light “Oil pressure/flow fault”
K1/K2/K3 Motor contactors
K1T Time relay for part winding operation 2-3 s
K2T Time relay Start-up delay
K3T Time relay oil flow monitoring 10-20 s
K4T Time relay pause time 300 s
K5T Time relay oil level monitoring 120 s
M1 Compressor
Q1 Main switch
R1..3 PTC sensors in motor windings
R1..6 PTC sensors in part winding motor windings
R7 PTC sensor in cylinder head/discharge gas temperature sensor
R8 Crank case heater
S1 Control switch
Y1 Solenoid valve (Start unloading)
Y2 Solenoid valve (Liquid line)
Y3 Solenoid valve (Capacity control – Expansion valve)
Technical manual SE-B1, SE-B2, SE-B3, SE-B4
Page 13
7. Technical data
Technical specifications
Description SE-B1 SE-B2 SE-B3 SE-B4
Supply voltage 230 VAC; +10% ~-15%, 50/60 Hz 2VA 24 VAC; +10% ~ -15%, 50/60 Hz 2VA 24 VDC; +20% ~ -20%, 50/60 Hz 1W 24 VDC version: no galvanic isolation
115 - 230 VAC; +10% ~ -15% 50/60 Hz 2VA
230 VAC; +10% ~ -15%, 50/60 Hz, 2VA 24 VAC; +10% ~ -15%, 50/60 Hz, 2VA
Permitted ambient temper-ature
-30°C – +70°C -30°C – +60°C
Relative humidity Max. 95% RH non-condensing Electronic circuit board is coated
Air pressure 660 hPA to 1060 hPA
PTC sensor cable length 120 mm 350 mm
Relay 24 VAC/VDC versions Switch voltage 24 VAC/VDC Continuous current max 10 mA (gold plated contacts). If current limit is exceeded, gold plating will be destroyed and current limit is then like the other versions listed below All versions Switch voltage 250 VAC. Continuous current max 2.5A Switching capacity 300 VA, C300 (pilot type use according to UL508)
Fuse required Max. 4A, fast-blow
Enclosure class Terminals IP00
Field wiring markings Wire type (Cu only, 14 – 20 AWG) Use 60°C copper conductors only
Terminal torque rating 6 lb-in.” / 0.7 Nm or equivalent Spade connection 6.3 mm * 0.8 mm / 1/4”
Type of sensor PTC according to DIN 44081/44082
Number of sensors 1 to 9 in series
Max total resistance, R25 total < 1.8 kΩ
RTrig 4.5 kΩ ±5%
RReset 2.7 kΩ ±5%
Reset Interrupt supply power for min. 5 seconds
Weight 150g; 24 VDC version: 90g
Dimensions 68.3 mm (w) * 32.5 mm (d) * 50 mm (h)
Mounting 35 mm snap-in or mounting with screws
Housing material PA66 - GF
UL file number E334756
Terminal wire range Cu 60°C only. 20-14 AWG / 0.5 mm2 - 2,0 mm2
Page 14
8. Drawings
29,2
1
32,5
1
68,3 ±1
55,5 ±0,5
10,0
±0,5 50
,0±1
Shown without wire
SE-B1/SE-B2/SE-B3
4,5
7
2,5
10
33
±0,5
3
,5
68 + 10
55,5 ±0,5
50
±0,5
SE-B4
Mounting is for standard rail 35 mm according to DIN EN
60715.
Technical manual SE-B1, SE-B2, SE-B3, SE-B4
Page 15
9. StandardsThe product is manufactured according to the following
standards.• RoHS 2002/95/EC
• Low voltage 206/95/EC
• 61010-1 Safety requirement for electrical equipment for measurement and control
• EMC 2004/108/EC
• 61000-6-x Generic EMC
The following standards have been used• EN 61010-1
Safety requirement for electrical equipment for meas-urement and control
• EN 61000-6-1
Immunity for domicil, profession and light industry
• EN 61000-6-3 Emission for domicil, profession and light industry
• UL 508 UL file number E334756
10. Trouble shootingCheck if there is power to the unit according to
specification.
If the power is ok:
• Turn off the power for 5 seconds and see if the relay is
energized after power on again.
If not, turn off all the power to avoid risk of injury!
• Unmount one of the cables to the PTC element in the motor
• If the measured resistance is above 4.5 kΩ ±5%, the temperature of the PTC-sensor is above the threshold limit and the relay has been released to protect the motor or installation.
• If the measured resistance is more than 1 MΩ, there is a brokenconnection to the PTC-sensor and the relay will not be engaged.
• If the measured resistance is close to 0 Ω, there is a short circuit on the PTC-sensor cables and there is no overheat protection!
• If power and resistance is ok, the protection module may
be defect and needs replacement.
Page 16
11. IndexA
Application use 8
D
Definitions 5
Dimensions 13
Direct starting compressor 8
Drawings 14
E
Enclosure class 13
F
Field wiring markings 13
Function 7
Fuse required 13
H
Housing material 13
L
Lockout mode 6
M
Max total resistance 13
Mounting 13, 14
N
Number of sensors 13
O
Oil flow monitoring 11
Operation voltage 13
P
Part winding compressor 9
Permitted ambient temperature 13
PTC sensor cable length 13
R
Relay 13
Reset 13
Restart / hysteresis mode 6
S
Schematic diagrams 12
Sensor type 13
Standards 15
T
Technical data 13
Terminal torque rating 13
Trouble shooting 15
W
Weight 13
Technical manual SE-B1, SE-B2, SE-B3, SE-B4
Page 17
12. Notes
Innovative and energy saving climate controlWhen it comes to climate control Lodam is one of the most experienced you can turn to. For more than four decades we have developed, produced and implemented electronic solutions dedicated to optimising applications like:
• Compressors• Condensing units• Heat pumps• Air conditioning• Refrigerated truck and trailer• Reefer containers
We know the importance of reliable, energy-efficient operation – and constantly push techno-logical boundaries to bring you the most innovative and forward-thinking solutions.
As part of the BITZER Group we are backed by one of the world’s leading players in the refrigeration and air conditioning industry. This alliance provides us with extensive network and application knowhow and allows us to stay at the forefront of climate control innovation. And to help ensure comfortable surroundings for humans and reliable protection of valuable goods anywhere in the world.
Lodam electronics a/sKærvej 776400 SønderborgDenmark
Tel. +45 7342 3737Fax +45 7342 [email protected]
For more information visit:
www.lodam.com
16-0
1-2
015
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e w
ith
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