A.3.6.2
Pump cleaning function with reversing contactor
Requirements
• 3RW55 or 3RW55 Failsafe soft starter (the example shows the 3RW55 soft starter with a
Standard circuit)
• Parameterization required
You will find further information in chapter Pump cleaning function (Page 182) and on the
Internet under the FAQs (
https://support.industry.siemens.com/cs/ww/en/view/109761112
).
WARNING
Automatic restart.
Can cause death or serious injury.
If a starting command is pending, a restart will be triggered automatically after the reset. This
particularly applies if the motor protection has tripped. Dangerous states of the system can
result.
Reset the start command (e.g. via the PLC or switch) before performing a reset.
To do this, for example, link the group error output (terminals 95 and 96) into the control.
Example circuits
A.3 Special applications
SIRIUS 3RW55 and 3RW55 Failsafe Soft Starters
320
Equipment Manual, 02/2022, A5E35630887002A/RS-AF/006