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System Operation
Copyright © 2007-2011 Eaton Corporation. All Rights Reserved.
IPN 997-00012-50H November 2011
65
Generator Control
Generator Control
is used to delay the start of a standby ac generator until the batteries are
partially discharged (rather than immediately after the ac supply fails). This can save fuel by
preventing the generator running during short ac supply failures. It can also be used to control
a generator in a hybrid power system (cyclic charge/discharge).
Generator Control
uses a digital output (relay) which is connected in series with the generator
run signal of the generator controller. The relay contacts interrupt the generator run signal until
the
Generator Control
is active.
The
Generator Control
output is activated and deactivated depending on the setting of
Automatic
Control Mode
. The options are:
Disabled
– The controller will not activate the generator control relay based on control
functions. However, alarms mapped to the same relay will activate and deactivate the
relay.
Fast Charge Only
– The controller will activate the generator control relay while
Fast Charge
is active or pending, and deactivate it when the
Fast Charge
cycle ends.
Fast Charge or Equalize
– The controller will activate the generator control relay while either
Fast Charge
or
Equalize
is active or pending, and deactivate it when the
Fast Charge
or
Equalize
cycle ends.
Every Mains Failure
– The controller will activate the generator control relay as soon as an ac
supply failure is detected, and deactivate it when the ac supply is restored.
A
Generator Fail
alarm is activated if the SC200 does not detect that the ac supply is present
(rectifiers have turned on) after the
Generator Fail Alarm Recognition Period
following
Generator
Control
becoming active.
The generator can also be started and stopped manually.
► To manually start the generator
Make sure that
Maximum Run Time
has been set to a value greater than zero.
Use the SC200 keypad to go to: Control Processes > Generator Control > Settings (tab) and
select
Start Manual Run
.
In DCTools/Web go to Control Processes > Generator Control and click
Start
.
► To manually stop the generator after a manual start
Use the SC200 keypad to go to: Control Processes > Generator Control > Settings (tab) and
select
Cancel Manual Run
.
In DCTools/Web go to Control Processes > Generator Control and click
Cancel
.
This will not stop the generator if it is running due to a Fast Charge, Equalize, or AC failure.
When the generator has been started manually,
Generator Run Time Remaining
shows the time
remaining for the generator to run.
► To view Generator Run Time Remaining
Use the SC200 keypad to go to: Control Processes > Generator Control.
In DCTools/Web go to Control Processes > Generator Control.
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