Reversing Duty - Siemens SIRIUS 3RW55 Equipment Manual

Example circuits
A.3 Special applications
A.3.7

Reversing duty

Requirements
• 3RW55 or 3RW55 Failsafe soft starter (the example shows the 3RW55 soft starter)
• Parameterization required:
– The input action DI1 is set to "Motor CW".
– The input action DI2 is set to "Motor CCW".
– The input action DI3 is set to "Manual operation local".
– The input action DO1 is set to "Reversing switching element - right".
– The input action DO21 is set to "Reversing switching element - left".
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.
322
WARNING
SIRIUS 3RW55 and 3RW55 Failsafe Soft Starters
Equipment Manual, 02/2022, A5E35630887002A/RS-AF/006