AGC Designer’s Reference Handbook
DEIF A/S Page 22 of 168
The purpose of the block mode is to make sure that the gen-set does not start for instance
during maintenance work.
If the digital inputs are used to change the mode, then it is important to know that the input
configured to block mode is a constant signal. So, when it is ON the unit is in a blocked state,
and when it is OFF, it returns to the mode it was in before block mode was selected.
Alarms are not influenced by block mode selection.
The gen-set can be started from the local engine control panel, if such is
installed. Therefore, DEIF recommends to avoid local cranking and starting of
the gen-set.
If block mode is selected using the display after the digital block input is
activated, the AGC will stay in block mode after the block input is deactivated.
The block mode must now be changed using the display. The block mode can
only be changed locally by display or digital input.
Before the running mode is changed it is important to check that persons are
clear of the gen-set and that the gen-set is ready for operation.
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