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Example circuits
A.3 Special applications
Requirements
If the soft stop function is set (ramp-down time setting element set to > 0 s) and the
emergency stop circuit is tripped, a "Missing load voltage, phase failure / missing load" fault
may be indicated on the soft starter. In this case, the soft starter must be reset according to
the selected RESET MODE.
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.
178
WARNING
Manual, 06/2019, A5E37108631002A/RS-AB/002
3RW51 Soft Starter
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