Product Manual

Operation
Owner’s Manual for Stationary Diesel Generators 23
Battery Charger
NOTE: Battery charger is integrated into control panel
module.
The battery charger ensures:
• Output is continually optimized to promote maxi-
mum battery life.
• Charging levels are safe.
NOTE: A warning message is displayed on the LCD
when battery requires service.
Transfer Switch Automatic Operation
In AUTO, generator starts automatically when utility
source voltage drops below preset level. Loads are trans-
ferred to standby power source once unit starts.
Proceed as follows to select automatic operation:
1. Verify transfer switch main contacts are set to
UTILITY (loads connected to utility power source).
2. Verify normal utility power source voltage is avail-
able to transfer switch terminal lugs N1, N2, and
N3 (if three-phase).
3. Set MLCB switch on control panel to ON
(CLOSED).
4. Press AUTO on control panel. A green LED illumi-
nates to verify system is in AUTO.
Automatic Sequence of Operation
Utility Failure
If control panel is set to AUTO when utility power fails
(falls below 65% of nominal, dealer programmable), a
ten second startup delay timer is started (user program-
mable). If utility power is still absent when time expires,
engine cranks and starts.
Once started, a five second engine warm-up delay timer
starts (user programmable). When time has elapsed,
load is transferred to generator. If utility power is restored
(above 80% of nominal, dealer programmable) between
time engine is first started and expiration of warm-up
time, controller completes start cycle and then runs
through its normal cool-down cycle (while load remains
on utility source throughout episode).
Cranking
The cyclic cranking is controlled as follows:
Fifteen (15) seconds crank, seven (7) seconds rest,
seven (7) seconds crank, seven (7) seconds rest; this
sequence is repeated for a total of six (6) crank cycles.
Load Transfer
With generator running, transfer of load is dependent
upon operating mode as follows:
AUTO
• Starts and runs if utility power fails (falls below 65% of nominal) for five consecutive sec-
onds (adjustable).
• Starts a five second (adjustable) engine warm-up timer.
• Does not execute transfer if utility power returns before expiration of warm-up timer (but
finishes warm-up and cool-down cycles).
• Transfers back to utility once utility power returns (above 80% of nominal) for 15 consecu-
tive seconds.
• Only shuts down if OFF is pressed or an alarm shutdown occurs.
• Once utility power returns, starts a cool-down cycle before it shuts down.
NOTE: Cool-down cycle is five minutes if turbocharger equipped, one minute if naturally
aspirated.
EXERCISE
• Only works in AUTO.
• Does not exercise if generator is already running in AUTO.
• During exercise cycle, transfers only if utility power fails for ten consecutive seconds.
MANUAL
• 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 15 consecutive seconds. The engine con-
tinues to run until AUTO or OFF key is pressed.