Transfer Switch Automatic Operation; Automatic Sequence Of Operation; Utility Failure; Cranking - Generac Power Systems 6055 Owner's Manual

Operation
3.7 — Transfer Switch Automatic Operation
In AUTO, the generator starts automatically when utility source voltage drops below the preset level. Once the unit
starts, loads are transferred to the standby power source.
To select automatic operation:
Verify that the transfer switch main contacts are set to the UTILITY position (loads connected to the utility power
1.
source).
Verify that normal UTILITY power source voltage is available to transfer switch terminal lugs N1 and N2.
2.
Move the Generator Disconnect Circuit Breaker switch under the side door to the ON (Closed) position.
3.
Press AUTO on the control pad. A green LED illuminates to confirm that the system is in the AUTO mode.
4.
3.7.1— Automatic Sequence of Operation
3.7.1.1—Utility Failure
If the control pad is set to AUTO when the utility power fails (falls below 65% of nominal, dealer programmable), a five
second Start-Up Delay timer is started (dealer programmable). If utility power is still absent when the time expires, the
engine cranks and starts.
Once started, a five second engine Warm-Up Delay timer starts. When the time has elapsed, the load is transferred to
the generator. If utility power is restored (above 80% of nominal, dealer programmable) between the time the engine is
first started and expiration of the warm-up time, the system completes the start cycle and then runs through its normal
cool-down cycle while the load remains on the utility source.
3.7.1.2—Cranking
The cyclic cranking is controlled as follows:
Sixteen (16) seconds crank, seven (7) seconds rest, sixteen (16) seconds crank, seven (7) seconds rest; this sequence
is repeated for a total of five (5) crank cycles.
3.7.1.3—Load Transfer
With the generator running, the transfer of load is dependent upon the operating mode as follows:
AUTO
EXERCISE
MANUAL
18
Starts and runs if utility power fails (falls below 65% of nominal) for five consecutive sec-
onds (adjustable).
Starts a five second engine warm-up timer.
Does not execute transfer if utility power returns before expiration of warm-up timer (but
finishes the warm-up and cool-down cycles).
Transfers back to utility once utility power returns (above 80% of nominal) for fifteen
consecutive seconds.
Only shuts down if OFF is pressed on the control pad or an alarm shutdown occurs.
Once utility power returns, starts a one minute cool-down cycle before it shuts down.
Only works in the AUTO mode when the generator is NOT running.
Does not exercise if generator is already running in AUTO or MANUAL modes.
During exercise cycle, transfers only if utility power fails for ten consecutive seconds.
Engine cranks and runs even if utility power is present, but does not transfer to generator.
Transfers to generator if utility fails (falls below 65% of nominal) for ten consecutive sec-
onds.
Transfers back to utility when utility returns for fifteen consecutive seconds. The engine
continues to run until AUTO or OFF is pressed.
Synergy Automatic Standby Generator Owner's Manual