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Preparing for use
4.8 Interlock circuit for anti-condensation heating
For pole-changing motors, in addition to the circuit breaker, use temperature sensors in the
windings.
Ex d and Ex t
Line supply
● Set the protective device (e.g. circuit breaker) to the rated current (see the rating plate).
● Or protect the machine using the certified temperature monitoring specified on the
supplementary plate .
Converter
● Always operate explosion-protected machines fed from converters with temperature
sensors that directly monitor the temperature.
Ex e and Ex eb
Line supply
● Set the protective device (e.g. circuit breaker) to the rated current (see the rating plate),
I
● Or protect the machine using the certified temperature monitoring specified on the
supplementary plate.
Converter
● Always operate explosion-protected machines fed from converters with temperature
sensors that directly monitor the temperature.
● Converter operation for these machines must be expressly certified. It is crucial that you
carefully observe the specific manufacturer's information and instructions. Converter,
machine and protective devices must be marked as belonging together and the permitted
operating data must be defined in the common EC-type examination certificate.
Ex n and Ex ec
Line supply
● Set the protective device (e.g. circuit breaker) to the rated current (see the rating plate).
● Or protect the machine using the certified temperature monitoring specified on the
supplementary plate .
Converter
● Always operate explosion-protected machines fed from converters with temperature
sensors that directly monitor the temperature.
4.8
Interlock circuit for anti-condensation heating
If the anti-condensation heating is operated while the machine is running, this can increase
the temperatures inside the machine.
● Install an interlock circuit that switches off the anti-condensation heating once the main
machine is switched on.
● Only switch on the anti-condensation heating after the motor has been switched off.
Comply with the data stamped on the plate of the anti-condensation heating, if available.
44
/I
and the locked rotor time (t
A
N
).
E
Operating Instructions, 06/2020, A5E44455710A
1MB..1/2/3/4 - shaft heights 63 ... 355
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