Generac
®
Power Systems, Inc.
11
Section 3 — Operation
Generac APS 6.0 DC Auxiliary Power System
7. Once the output voltage has been set, shut the
unit down and allow to stop. Re-start the unit and
double check that the output voltage is set to
26.2V.
8. The unit can now be connected to the Lucent
Rectifier box.
3.4.6 ENGINE CONTROL, ALARM AND
SHUTDOWN P.C.B.
The control panel performs all the start/stop and
shutdown functions of the generator both in manual
and automatic modes (Figure 3.8).
Figure 3.8 — Control Panel
3.4.7 MANUAL OPERATION
Select manual on the Manual/Off/Auto switch. The
engine generator will crank and start. In the manual
mode, all alarm and shutdown functions are opera-
tional.
3.4.8 AUTOMATIC OPERATION
Select auto on the Manual/Off/Auto switch. In Auto
mode, a printed circuit board on the control panel
constantly monitors utility power source voltage.
Should that voltage drop below a preset level
(approximately 130V) and remain at such a low state
for a period of time, the engine will crank and start.
The time interval between utility fail and engine start,
(Delay on Start), can be field selected by changing the
position of a series of dip switches mounted on the
printed circuit board (Figure 3.9).
Figure 3.9 — Dip Switches
Each unit has been factory set with a 2 minute delay
on start as a standard. Depending on the battery
bank capacity and the load requirements, this time
may need to be adjusted.
When the utility voltage returns to a pre-set level
(approximately 153V) and remains at that high level,
the printed circuit board will keep the engine running
for a duration of approximately 5 minutes as a cool
down period. During automatic operation, all alarm
and shutdown functions are operational.
3.4.9 OFF POSITION
With the manual/off/auto switch in the off position.
The unit will remain stationary indefinitely.
3.4.10 REMOTE START
When the Auto/Off/Manual switch is in the Auto posi-
tion, application of 12 VDC to this contact point will
start the engine. The engine will continue to run as
long as 12 VDC is present.
3.4.11 REMOTE STOP
When the Auto/Off/Manual switch is in the Auto posi-
tion, application of 12 VDC to this contact point will
prevent the engine from starting and running.
As long as 12 VDC is maintained, the unit will run.
This contact point can also be used to remotely reset
alarm faults.
3.4.12 ALARMS
The control panel provides a number of status alarm
outputs which can be monitored by the operator. The
alarm signals from the control panel are located on a
12 position terminal block mounted on the left hand
side of the electrical enclosure (Figure 3.10).
Only Switch 1 ON = 2 min. delay
Only Switch 2 ON = 5 min. delay
Only Switch 3 ON = 10 min. delay
Only Switch 4 ON = 15 min. delay
All Switches OFF - 20 min. delay
Summary of Contents for 00847-1
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