Temperature Of The Power Module’s Heat Sink - HEIDENHAIN iTNC 530 HSCI Technical Manual

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Temperature of the

power module's

For linear and torque motors, the conductor for the temperature signal of the

KTY is frequently in the motor power cable, which can cause interference.

Since the conductor for the temperature signal is then led into the conductor

of the speed encoder, the interference causes noise in the encoder signals.

HEIDENHAIN therefore recommends conducting the temperature signals

over the line drop compensator, so that the interference signals are filtered.

HEIDENHAIN recommends the additional temperature monitoring of the

PTC thermistors or thermo switches via the PLC, since these are

distributed over the entire length (linear motors) or circumference (torque

motors) (as opposed to the KTY, for which there are only spot

measurements).

For example, PTC thermistors can be connected to a PLC input via the

securely grounded 3RN1013-1BW10 thermistor motor-protection device from

At X51 to X60 the temperature warning signal is available at pin 10a.

If the permissible temperature of the heat sink on the power module is

exceeded, this signal is reset.

To avoid destroying the power module, the drives must be brought

immediately to a standstill after a temperature warning.

Data on maximum permissible temperatures are available from the

manufacturer of your power module.

The TEMPERATURE WARNING signal is not evaluated in the NC.

Use Module 9160 or 9066 to interrogate the temperature warning, and take

appropriate measures.

HEIDENHAIN Technical Manual iTNC 530 HSCI