6 – 166 HEIDENHAIN Technical Manual TNC 426, TNC 430
Temperature of the
power module's
heat sink (only
digital axes)
At X51 to X59 and X61 the “temperature warning” signal is available at pin 13.
If the permissible temperature of the heat sink on the power module is
exceeded, this signal is reset.
The temperature warning signal is not evaluated in the NC:
7
77
7 Use Module 9160 or 9066 to interrogate the temperature warning, and take
appropriate measures.
Warning
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 supply unit.
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