Encoder system connection
10.1 Sensor Module Cabinet-Mounted SMC20
242
SINAMICS S120 Combi
Manual, (GH9), 07/2016, 6SL3097-4AV00-0BP5
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.
Data regarding the parameterization of the KTY temperature sensor can be taken from the
following reference:
Reference: /FH1/ SINAMICS S120 Function Manual, Chapter "Monitoring and protective
functions/thermal motor protection"
Danger to life due to 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 protectiv
e
s
eparation.
• 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- 3 X524 terminal strip
Voltage: 24 V (20.4 … 28.8 V)
Current consumption: max. 0.35 A
Maximum current via jumper in connector: 20 A (15 A
according to UL/CSA)
Type: Screw terminal 3 (Page 307)
Max. connectable cross-section: 2.5 mm²
Tightening torque: 0.4 … 0.5 Nm
M Electronics ground
The maximum cable length that can be connected is 10 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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