Siemens Sinamics G130 Operating Instructions Manual page 22

Electrical installation
4.3 Interface description
Electric shock in the event of voltage flashovers on the temperature sensor cable
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
Note
Permissible voltage values
The common mode range must not be violated in order to avoid incorrect analog-digital
conversion results. The following voltages are permissible:
• Input voltage: ±30 V (destruction limit)
• Common mode voltage: ±10 V with respect to ground potential (increased errors when
exceeded)
NOTICE
Damage to motor in the event of 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
In order to minimize noise emission, shielded cables should be used.
Note
The maximum cable length for a shielded cable – connected at both ends – to the
temperature sensor and to the analog inputs is 30 m.
20
WARNING
isolation.
motors, for example), use a Sensor Module External (SME120 or SME125) or Terminal
Module TM120.
Voltage Sensing Module 10 (VSM10)
Operating Instructions, 11/2017, A5E02142235A