SCHUNK STM 560V Series, Assembly And Operating Manual

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Troubleshooting
62 04/STM-560V/en/2010-12-10/SW
10.1.5 Error message for the winding temperature
Possible cause Corrective action
The electrical connection to the
temperature sensor is faulty  Check resistance between the converter and the
temperature sensor in the STM and replace the electrical
connection, if necessary.
Temperature sensor defective  Check the resistance of the temperature sensor.
 If the resistance exceeds 630 Ohms at room temperature,
the STM must be sent to SCHUNK with a repair order.
Thermal motor overload

Reduce the load.
 Mount the motor on heat-conducting materials to dissipate
excess motor heat.
Rotor is blocked mechanically
 Check the mechanical components.
 Check the evenness at the mounting surface (see chapter
7.1, page 26)
Encoder signals are faulty;
encoder line shielding is not corrected.  Check the encoder's power supply.
 Check the encoder signals and the shielding of the encoder
cable.
Motor overload;
overvoltage or undervoltage  Check the dimensioning.

Reduce the load.
 Check the converter settings.
 Check the output power supply.
Table 24