Accessories
4.6 Motor operators
3VA molded case circuit breakers with IEC certificate
Manual, 03/2019, A5E03603177010-03
345
Connection diagram for control of the motor operator MO320
An EMERGENCY-OFF circuit is implemented by means of undervoltage releases
(Page 191).
For further circuit diagrams, see chapter "Circuit diagrams" (Page 539).
The MO320 motor operator is edge-controlled, i.e. it reacts only to the positive edge of an
ON or OFF command at the relevant terminals 3 and 4. In this case, the OFF signal is
dominant, i.e. the motor operator will be switched off in response to an OFF edge even if an
ON signal is applied.
The MO320 requires a pause period of 80 ms between the end of an OFF signal and the
edge of an ON signal. Since the OFF signal is dominant, it does not require a pause period.
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