Siemens SINAMICS S120 Equipment Manual page 300

Motor Modules Chassis-2
7.3 Interface description
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.
• 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 as a result of unshielded or incorrectly routed cables to temperature sensors
Unshielded or incorrectly routed cables to temperature sensors can result in interference
being coupled into the signal processing electronics from the power side. This can result in
significant disturbance of all signals (fault messages) up to failure of individual components
(destruction of the devices).
• Only use shielded cables as temperature sensor cables.
• If temperature sensor cables are routed together with the motor cable, use separately
• Connect the cable shield to ground potential through a large surface area.
NOTICE
Damage to the motor in the event of incorrectly connected KTY temperature sensor at
terminals X41:3,4
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 at terminals X41:3,4 can be used for motors that are
equipped with a KTY84-1C130, PT100, PT1000 or PTC measuring sensor in the stator
windings.
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.
298
WARNING
isolation.
motors, for example), use a Sensor Module External (SME120 or SME125) or Terminal
Module TM120.
shielded cables twisted in pairs.
Air-cooled chassis power units
Manual, 07/2019, 6SL3097-4AE00-0BP9