Functions
7.7 Condition Monitoring
SIRIUS 3RW55 soft starter
126 Manual, 08/2018, A5E35630887002A/RS-AB/002
Pump cleaning function
Operating principle
The 3RW55 soft starter supports a pump cleaning function that can prevent an imminent
blockage or, within certain limits, can also clear an existing blockage. Pump cleaning is only
possible if the motor or pump is switched on, i.e. if one or both control commands Motor CW
or Motor CCW is present and there is no internal trip command (e.g. disconnection due to
motor overload trip).
In order to use the pump cleaning function, activate the control function via one of the
following control sources:
● Input action ("Pump cleaning mode")
● 3RW5 communication module (PIQ: Pump cleaning)
● 3RW5 HMI High Feature
(Parameters > Soft Starter > Condition Monitoring > Pump cleaning)
The cancelation of the control command or the occurrence of an internal trip command
results in the pump cleaning process being aborted.
● To remove blockages and dirt from water pipes, filters and pump blades.
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