External Battery Supply Module (Ebsm) - Kohler MPAC 1500 Manual

8.6 External Battery Supply
Module (EBSM)
The external battery supply module kit allows
connection to the generator set engine start battery(ies)
or other batteries to provide 12 VDC power to the ATS
controller. The external battery supply module kit is
required for the following applications:
D
Systems using extended engine start time
delays. The EBSM provides power to the ATS
controller during extended time delays longer than 15
seconds, when neither the Normal nor the
Emergency source is available.
D
Three-source systems. Three-source systems use
two transfer switches and two standby power sources
in addition to the preferred power source. The EBSM
provides power to the second ATS controller when
the preferred source (connected to ATS1) is
supplying the load. See Section 5.15 for instructions
to set up a three-source system.
D
Installations with frequent utility power outages.
The EBSM provides power to the ATS controller when
neither source is available, preserving the controller's
backup battery.
The EBSM produces 2 amps at 12 VDC with 9--36 VDC
input. The EBSM input is reverse-polarity protected.
The EBSM outputs a low battery voltage signal when the
external battery voltage falls below 11 VDC for a 12-volt
system or 22 VDC for a 24-volt system.
1
4
1. Connector P20
2. LED indicators
3. Battery input connection terminal block TB13
4. 12/24 volt DIP switch SW11-1. OFF=12 VDC, ON = 24 VDC
Figure 8-14 External Battery Supply Module
TP-6714 4/10
The external battery supply module kit includes one
external battery supply circuit board and the circuit
board mounting components. See Figure 8-14.
A module mounting kit is required for installation of the
external battery supply module. The module connects
to an adjacent I/O module or to the interface harness
included with the I/O module mounting assembly kit.
The I/O module mounting assembly kit allows the
installation of up to four I/O modules plus one external
battery supply module. Obtain a module mounting kit if
one is not already installed and follow the instructions
provided with the kits to install the mounting assembly
and modules.
The battery voltage selection DIP switch SW11-1 allows
selection between 12-volt and 24-volt systems for low
battery voltage sensing and indication. Connect one or
two batteries to the external battery supply module. Use
a battery charger to maintain the battery(ies) connected
to the EBSM.
DIP Switch SW11-1 Setting
Figure 8-15
Connection and Voltage Setting
1. Use #14-28 AWG wire to connect one or two
2. Set voltage selector switch SW11-1 to 12 or
3
2
GM42227-A
OFF
ON
Battery Voltage Selection
batteries to terminal block TB13. (A second battery
can be connected but is not required.) Follow the
marking on the board for the positive (+) and
negative (--) connections. See Figure 8-14 and
Figure 8-15.
Note: If the battery connections are reversed, red
LED1 or LED2 will light. See Figure 8-14.
24VDC. See Figure 8-14 and Figure 8-15. Switch
SW11-2 is not used.
Note: The EBSM has no address switches but
must be the last board on the bus.
Battery Voltage
12 VDC
24 VDC
Section 8 Accessories 111