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Example circuits
A.2 Control circuit connection
Q1
Q11
Q21
M1
P1
P2
PE
A.2.3
Switching with the control supply voltage
Requirements
● Owing to the intrinsic protection, an interval of at least 5 minutes must be allowed to
elapse prior to restarting if the device is switched on and off in normal operation by
means of the control voltage.
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.
160
Motor starter protector
Soft starter
External bypass contactor
Motor
Indicator light
Indicator light
Protective conductor
WARNING
Manual, 06/2019, A5E37108631002A/RS-AB/002
3RW51 Soft Starter
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