3RW3 semiconductor motor control unit
SIRIUS System Manual
GWA 4NEB 430 0999-02b
8-35
8.4 Accessories
The following accessories are available for the 3RW3 soft starters:
Table 8-16: Accessories, 3RW30/31
Control of the fan
The fan is controlled by the control electronics of the soft starter.
It runs at the following times:
• When the fan is switched on: approx. 0.5 seconds after the bypass con-
tacts close (end-of-startup signal)
• When the fan is switched off: approx. 0.5 hours after the soft starter is
switched off
Attachment of the fan
The fan is snapped into the recess provided on the underside of the soft
starter, and the plug-in cable is inserted in the corresponding connector. The
direction of installation is indicated on the fan by an arrow.
Additional parameter assignment is not necessary.
These fan modules mean that the starter can be installed in any position.
The only exception to this is when the fan cannot blow against the convec-
tion downward from above.
Description Order number
Fan for 3RW3.2.. 3RW3926-8A
Fan for 3RW303..
and 3RW304..
3RW3936-8A
Terminal covers for box covers for
3RW303..
3RT1936-4EA2
Terminal covers for box covers for
3RW304..
3RT1946-4EA2
Terminal cover for bar connection for
3RW304..
3RT1946-4EA1
Link modules for combination with 3RV1
circuit breaker
3RA19.1-1A (frame sizes S00 to S3)
RC element for control from PLC 3TX7462-3T
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