Siemens SINAMICS S120 Equipment Manual page 147

Electric shock in the event of voltage flashovers at the temperature sensor
Voltage arcs to the signal electronics can occur for motors without electrical separation of
the temperature sensors.
• Only use temperature sensors that fully comply with the specifications of the safety
• If safe electrical separation cannot be guaranteed (for linear motors or third-party
NOTICE
Device failure due to unshielded or incorrectly laid cables to the temperature sensors
Unshielded or incorrectly laid cables to the temperature sensors can cause induced
voltages from the power side to the signal-processing electronics. This can cause massive
interferences of all signals (error messages) through to the failure of individual components
(damage of the devices).
• Use only shielded cables to the temperature sensors.
• If cables to temperature sensors are laid together with the motor cable, use twisted pairs
• Connect the cable shield to ground potential through a large surface area.
• Recommendation: Use suitable MOTION-CONNECT cables.
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.
Note
The temperature sensor connection can be used for motors that are equipped with a KTY84-
130-, PTC, Pt100 or Pt1000 sensor in the stator windings.
Note
A cable harness is used to connect terminals -X41:1 and -X41:2 to terminals -X9:8 and -
X9:7.
AC Drive
Manual, 06/2019, 6SL3097-5AL00-0BP1
WARNING
isolation.
motors, for example), use a Sensor Module External (SME120 or SME125) or Terminal
Module TM120.
and separately shielded cables.
Power Modules
5.3 Power Modules Chassis
145