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54 Xanbus Automatic Generator Start (AGS) Owner’s Guide
Configuration of the Xanbus AGS
Gen Cool Down
Purpose The Gen Cool Down setting allows an interval to be set between
a generator stop trigger occurring and the AGS actually stopping the
generator. This setting is used in Freedom SW system to unload the
generator before the AGS shuts it down. When a stop trigger occurs, the
AGS enters a Generator cool down state where it continues to run the
generator for the specified time period. At the same time the Freedom SW
Series Inverter/Charger will disconnect the generator when it detects the
AGS in Generator Cool Down, allowing the generator operate unloaded and
cool down before it is shut down.
This helps improves reliability of the generator by reducing temperature
peaking due to abrupt shut down of a loaded generator. It also reduces the
probability of the generator backfiring that typically happens when the
generator is abruptly shutdown while under heavy load. Gen Cool Down
applies to all stop triggers namely Stop V, Stop Load, Stop Float, Stop
Absorb, Stop Load, and Manual Off.
When to use This setting is automatically configured when a “Gen Type”
is selected for the generator. Customize the “Gen Cool Down” trigger on
the advice of the generator manufacturer or authorized service personnel.
Gen Spin Down
Purpose The Gen Spin Down setting allows an interval to be set between
a generator stop signal being sent at the end of a Gen Cool Down cycle and
the AGS changing the Generator State to “stopped.” This setting is used in
the Freedom SW System to allow the generator to completely stop, thereby
reducing its output voltage to zero and pulling the B+ signal low before the
Freedom SW Series Inverter/Charger can qualify and transfer AC power.
This helps the system operate properly in cases where the generator does
not immediately stop when the stop signal is sent to the AGS. Gen Spin
Down applies to all stop triggers—Stop V, Stop Load, Stop Float, Stop
Absorb, Stop Load, and Manual Off.
When to use This setting is automatically configured when a “Gen Type”
is selected for the generator. Customize the “Gen Spin Down” trigger on the
advice of the generator manufacturer or authorized service personnel.
Values Default
1s to 90s (increments of 1s) 30s
Values Default
1s to 900s (increments of 1s) 3s