Encoder system connection
10.2 Sensor Module Cabinet-Mounted SMC30
SINAMICS S120 Combi
Manual, 11/2017, 6SL3097-4AV00-0BP7
239
Temperature sensor connection
Damage to motor in the event of incorrectly connected KTY temperature sensor
A KTY temperature sensor connected with incorrect polarity cannot detect if the motor
overheats. Overheating can cause damage to the motor.
• Connect a KTY temperature sensor with the correct polarity.
You can find information for parameterizing the KTY temperature sensor in the SINAMICS
S120 Drive Systems Function Manual, in Section "Monitoring and protective functions /
thermal motor protection".
Note
The maximum length of the temperature sensor cable is 100
m. The cables must be
Electric shock in the event of voltage flashovers at the temperature sensor
Voltage flashovers in the signal electronics can occur in motors without safe electrical
separation of the temperature sensors.
• Use temperature sensors that comply with the specifications relating to protective
separation.
• If safe electrical separation cannot be guaranteed (for linear motors or third-party
motors, for example), use a Sensor Module External (SME120 or SME125) or Terminal
Module TM120.
X524 Electronics power supply
Table 10- 9 X524: Electronics power supply
Voltage: 24 V (20.4 … 28.8 V)
Current consumption: Maximum 0.55 A
Maximum current through the jumper in
the connector: 20 A
M Electronics ground
Type: Screw terminal 2 (Page 288)
The maximum cable length that can be connected is 30 m.
Note
The two "+" and "M" terminals are jumpered in the connector. This ensures that the supply
voltage is looped through.
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