Operating instructions
Electrical installation
4.9 Other connections
Drive converter cabinet units
Operating Instructions, 10/2008, A5E00288214A
75
Circuit proposal for controlling the auxiliary contactor from within the converter
The following circuit, for example, can be used if the auxiliary contactor is to be controlled
from within the converter. The “Operation” message is then no longer available for other
purposes.
2SHUDWLRQ
&LUFXLWSURSRVDO
$;
/1
;
70
$$
.
;
Figure 4-8 Circuit proposal for controlling the auxiliary contactor from within the converter
Note
If 230 V AC is applied to the relay outputs, the customer terminal block must also be
grounded via a 6 mm² protective conductor.
4.9.4 Main switch incl. fuses or main circuit breaker (option L26)
Description
Up to 800 A, a load interrupter with externally-mounted fuses is used as the main circuit
breaker. Above 800 A, the standard circuit breaker is used to disconnect the voltage and
provide overload and short-circuit protection. The circuit breaker is controlled and supplied
within the converter.
CAUTION
Switching at input
Cabinet units with circuit breaker may be powered up only once every 3 minutes. Failure to
observe this rule can cause damage to the circuit breaker.