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5
5.0 DISPLAY
This button changes between the various pages About, Status, Instrumentation, Alarms,
Event Log, LCD Indicators
This buttons scrolls through the items in the currently displayed page.
5.1 LOAD SWITCHING CONTROL
Two fascia mounted buttons are provided for load switching operation when in manual mode. These
buttons are enabled/disabled in the modules PC configuration Suite so refer to your configuration file
to ensure the configuration has enabled the buttons.
Pressing this button when the mains is on load will open the mains load switch. Pressing
this button when the generator is on load and the mains is healthy, will open the
generator load switch, wait for the duration of the transfer delay, then close the mains
load switch.
Pressing this button when the generator is on load will open the generator load switch.
Pressing this button when the mains is on load and the generator is available, will open
the mains load switch, wait for the duration of the transfer delay, then close the
generator load switch.
6 OPERATION
6.1 AUTOMATIC MODE OF OPERATION
Activate auto mode by pressing the
Auto
pushbutton.
Auto mode will allow the transfer system to operate fully automatically, starting and stopping the
generator as required with no user intervention.
6.1.1 WAITING IN AUTO MODE
If a starting request is made and there is no input present for
Auto Start Inhibit
, the starting sequence
will begin.
Starting requests can be from the following sources:
Mains failure
Activation of an auxiliary input that has been configured to
remote start
Activation of the inbuilt exercise scheduler.
6.1.2 STARTING SEQUENCE
To allow for ‘false’ start requests, the start delay timer begins.
Should all start requests be removed during the start delay timer, the unit will return to a stand-by
state.
If a start request is still present at the end of the start delay timer, start signal is given to the generator
set by the start/run output.
If the generator fails to become available before the generator failure timer expires. This is indicated
on the LCD display, but the starting signal remains active.
6.1.3 GENERATOR ON LOAD
Once the generator is measured as being within limits (and the Auxiliary Generator Ready signal is
received, the mains is removed from the load, and after the transfer timer has expired, the generator
is placed on load.
If all start requests are removed and there is no input present for Auto Restore Inhibit, the stopping
sequence will begin.
Summary of Contents for 333
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