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5.7 Connecting
temperature and brake
monitoring devices
PTC thermistor
3x
Switch-off
TP1
TP2
P1
P2
03781984.eps
PTC thermistor
6x
Warning
TP11
TP12
P11
P12
03782784.eps
Depending on the motor features, the connections for temperature monitoring and/
or brake monitoring are brought out on Euro terminals in the terminal box.
The following connection designations are used:
• PTC thermistor
– Switch-off:
TP1 - TP2 and/or 1TP1 - 1TP2 and 2TP1 - 2TP2
– Warning:
TP11 - TP12
Important: PTC thermistors to DIN 44081 are suitable for tripping devices with
2,5 V DC output voltage and 4 kΩ tripping resistance.
PTC thermistors may only be tested for continuity with max. 2,5 V DC.
Do not use a buzzer (voltage peaks) or similar devices. The resistance
of one PTC thermistor is 20 ... 250 Ω at temperatures of -20 °C to
– 20K. (TNF = rated operating temperature).
• Temperature detector (bimetallic switch):
• Brake monitoring
– Release monitoring:
– Adjustment monitoring: 2S3 - 2S2- 2S1
The diagrams below show the most important single connections.
When several monitoring devices are used (such as PTC thermistors for the motor
and release monitoring for the brake), the individual circuits are combined in one
connection diagram. This connection diagram is located inside the motor terminal
box.
PTC thermistor
3x
Switch-off 1
1TP1
1TP2
P2
P1
3x
Switch-off 2
2TP2
2TP1
P21
P22
03782084.eps
Brake monitoring
Release monitoring
2
1
4
wh gn
bn
1S3
1S2
1S1
03781684.eps
1S3 - 1S2 - 1S1
Contact 2 (1S2 - 1S1) closed: brake not released,
braking position
Contact 4 (1S3 - 1S1) closed: brake released
Contact 2 (2S2- 2S1) closed: brake must be
adjusted
Contact 4 (2S3 - 2S1) closed: normal operating
status
PTC thermistor
3x
Warning
TP11
TP12
P11 P12
03782184.eps
Brake monitoring
Adjustment monitoring
4
2
1
wh
gn bn
2S3
2S2
2S1
03781784.eps
TNF
TB1 - TB2
PTC thermistor
6x
Switch-off
TP1
TP2
P1
P2
03782384.eps
Temperature detector
TB1
TB2
P1
P2
03782284.eps
61
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