Operation
24
6 OPERATION
6.1 AUTOMATIC MODE OF OPERATION
NOTE:- If a digital input configured to
panel lock
is active, changing module modes is not possible.
Viewing the instruments and event logs is NOT affected by panel lock.
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 :
•
S1 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 S2 ON LOAD
Once S2 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
begins.
6.1.4 STOPPING SEQUENCE
The
return delay
timer operates to ensure that the starting request has been permanently removed and isn’t just a
short term removal.
After the return delay timer, the generator load switch is opened, then after the transfer timers, the mains is placed
back on load.
Should another start request be made during the cooling down period, the generator is placed on load.
The
cooling
timer allows the set to run off load and cool sufficiently before being stopped. This is particularly
important where turbo chargers are fitted to the engine.
After the
cooling
timer has expired, the set is stopped.
NOTE:- If module power is removed, it ‘remembers’ the operating mode and returns to that mode next
time power is applied.
