Siemens SINAMICS S120 Equipment Manual page 286

Control Units, Control Unit Adapters and operating components
8.6 Control Unit Adapter CUA32
Temperature sensor input
The temperature sensor is required for motors where the temperature value is not
transmitted via DRIVE-CLiQ.
NOTICE
Damage to motor due to incorrectly connected KTY temperature sensor
If a KTY temperature sensor is connected with incorrect polarity, it is not possible to detect
when the motor overheats. Overheating can cause damage to the motor.
• Connect a KTY temperature sensor with the correct polarity.
The maximum length of the temperature sensor cable is 300 m. The cables must be
shielded. For cable lengths > 100 m, cables with a cross-section of ≥ 1 mm
"Safe Torque Off" function
If the "Safe Torque Off" function is selected, a 24 V DC voltage must be connected to
terminals 3 and 4. Upon removal, pulse inhibit is activated.
Note
Function of the EP terminals
The function of the EP terminals for pulse inhibit is only available if the "Safety Integrated
Basic Functions via onboard terminals" is enabled in the software.
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
• If safe electrical separation cannot be guaranteed (e.g. for linear motors or third-party
284
WARNING
separation.
motors), use a SME120 or SME125 Sensor Module External or the TM120 Terminal
Module.
must be used.
2
Manual, 06/2019, 6SL3097-5AL00-0BP1
AC Drive