Temperature Monitoring - HEIDENHAIN iTNC 530 Service Manual

3.3.7 Temperature monitoring

The internal temperature of the MC 42x (B/C) is continuously monitored. At approx. 55 °C the
Temperature of the
message TNC temperature warning is displayed. If the temperature does not fall below
MC 42x (B/C)
55° C any more, the warning is reactivated after two minutes. Beginning at about 60 °C the error
message Temperature too high <temperature> °C appears and an EMERGENCY STOP is
triggered. If the temperature does not fall below 60 °C when the machine is switched on again,
the error message reappears after 10 to 20 seconds.
To measure the motor temperature, a KTY 84 must be connected at pins 13 and 25 of X15 to
Motor temperature
X20, X80 to X83. The temperature value is ascertained at least once per second. The maximum
permissible motor temperature is taken from the motor table.
If this voltage is exceeded, it results in the error message
MOTOR TEMPERATURE <AXIS> TOO HIGH and the drives are automatically switched off.
At X51 to X60 the temperature warning signal is available at pin 10a.
Heat sink
temperature of the
If the permissible temperature of the heat sink on the power module is exceeded, this signal is
power module
reset.
The temperatur warning signal is not evaluated in the NC. This information is made available via
the modules 9610 or 9066.
No claim for completeness; contact your machine manufacturer!
Possible
You may add your own experiences!
causes of error
3 – 674
Caution
Entries in the motor table must not be changed!
Caution
To avoid destroying the power module, the drives must be brought to a standstill
immediately after a temperature warning.
The OEM should provide for correspondingly!
Data on maximum permissible temperatures are available from the manufacturer of your
power supply unit.
Device (motor, power module, etc) overloaded
Clogged filter pads
Climate control unit in electrical cabinet defective
Defective fan
Unfavorable mounting of components
Defective temperature sensor
Defective encoder cable
HEIDENHAIN Service Manual iTNC 530