Section 75 00-02-0878
2013-03-07 - 62 -
Digital Mains Breaker Control
The unit will normally execute the Automatic Mains Failure (AMF) sequence based on
the settings adjusted in the system setup. Besides these settings it is possible to
configure a digital input that can be used to control the mains return sequence. This
input is the "Mains Okay" input. The purpose of this function is to let an external device
or an operator control the mains return sequence. The external device can be a PLC.
The following flowchart below shows that if the input is configured, it needs to be
activated (by a pulse) in order to initiate the mains return sequence. The load will
continue on generator supply if the input is not activated
.
The Mains OK delay is not used at all when the "Mains Okay" input is configured.
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