12
OPM-117/B
DC ELECTRICAL
INTERCONNECTION
CAUTION:
Never run the AC and DC wiring on the same conduit.
NOTE: There are various DC connectors on the engine
that have nothing connected to them. This was done
intentionally, the connectors are for END OF THE LINE
TESTING and other diagnostic tests. They are not used
during normal operations and can just be ignored.
All DC connections are completed on the terminal strip just
below the engine control cabinet.
A - Customer Remote Start CONNECTIONS TERMINALS. The
two remote start leads from the Automatic Transfer Switch
are connected to the two terminals marked 1 & 23. The
wire in terminal labeled #1 is Battery Negative/Ground and
the wire in the terminal labeled #23 is your Remote Start
lead. Closing these two leads together will signal the DSE
7310 MKII to go into an autostart mode and start up the
engine generator.
Depending on the distance, 14 to 16 gauge stranded wire
should be used. It is suggested that these wires be labeled
S1 and S23.
Note: Any relay closure can be used to start and stop this
generator. As long as the contact stays closed the engine
generator set will continue to run. Once the relay is opened
the unit will shut down and remain in the standby mode
until the remote start relay is closed again.
B - ESTOP- & ESTOP+. Remote Emergency Stop terminals.
These two terminals are shipped with a jumper installed.
If your application requires the installation of a Remote
Emergency Stop switch, remove the jumper and wire your
switch to these terminals. This unit will not start and run
without either the jumper installed or a remote N/C switch
installed..
C - Battery Charger Failure. Battery charger failure relay
input from remote battery charger to DSE7310 MKII
controller.
D - Remote Display Panel Interface Terminals. These
interface terminals are pre-wired to allow for the connection
of a remote display. This display allows for the remote
annunciation of alarms at a location such as a nurses station
or a control room.
E - Battery Positive and Ground ( battery negative). These
terminals are dedicated for any accessory that will be
installed. There is a maximum of 7 Amps combined.
D
C
B
A
E
GROUNDING
A grounding lug has been provided on the engine
generator set. Check your local codes for proper grounding
requirements.
MOUNTING THE AUTOMATIC
TRANSFER SWITCH
See the ASCO installation manual for additional details on
proper wiring of the Automatic Transfer Switch.
Because of the many different types of service, feeder,
and distribution equipment, no specific wiring instructions
can be provided. It is recommended that only copper
wire be used. In all cases it is essential that while the load
is connected to the generator, there can be absolutely
no feedback from the generator to the power line or the
power line to the generator. When properly installed, the
normal A.T.S. Control and safety systems will eliminate all
paths for feedback.
To wire the automatic transfer switch into the existing
wiring, first determine which circuits will be on the
emergency load circuit. If the entire load is to be transferred,
the transfer switch can be wired in directly after the watt-
hour meter and the service entrance, providing the service
entrance ampere rating is within the transfer switch’s rated
capability.
If only specific circuits are to be powered under emergency
power failure conditions, an additional distribution panel
designated “emergency distribution panel” must be
installed. All selected emergency circuits are removed from
main distribution panels and installed in the emergency
distribution panel. The A.T.S. is then installed between
the main panel and the emergency distribution panel.
Suggested circuits: freezer, refrigerator, furnace, emergency
lights, sump pump, emergency outlet circuits, etc. Total
running load must not exceed generator rating.
WARNING:
A service disconnect must be installed in front of the ATS
panel as the ATS is not service entrance rated. This will
allow you to test the generator under load. Should you ever
have to work on the switch, you will be able to disconnect
the power and work on the switch cold without having the
power company pull your meter.
To wire the automatic transfer switch into the existing
wiring, first determine which circuits will be on the
emergency load circuit. If the entire load is to be transferred,
the transfer switch can be wired in directly after the watt-
hour meter and the service entrance, providing the service
entrance ampere rating is within the transfer switch’s rated
capability.
If only specific circuits are to be powered under emergency
power failure conditions, an additional distribution panel
designated “emergency distribution panel” must be
installed. All selected emergency circuits are removed from
main distribution panels and reinstalled in the emergency
distribution panel. Suggested circuits: freezer, refrigerator,
furnace, emergency lights, sump pump, emergency outlet
circuits, etc. Total running load must not exceed generator
rating.
