26 AMPS-24 Manual — P/N 51907:J2 02/26/2014
Installation Installing and Connecting the Batteries
Certain system designs may require connecting two or four batteries to the power supply,
connecting multiple power supplies to each other, or connecting one set of batteries to multiple
power supplies. Always use wire size 12-18 AWG (3.25 mm
2
– 0.75 mm
2
), and install the power
supply and the batteries in the appropriate enclosures, as described in Sections 2.4 and 2.5.
2.8.1 Setting the Charger
The AMPS-24 battery charger will charge 7 to 200 AH lead-acid batteries. Use PK-PPS to select
the appropriate battery charger current for the system’s battery capacity from these settings:
1A, 2A,
5A, or DISABLE CHARGER. Select 1A to charge 7 to 26 AH batteries. Select 2A to charge 12 to 60
AH batteries. Set the charger to 5 A when the power supply will be charging a system that requires
55 to 200 AH. Select
DISABLE CHARGER when the batteries will be charged by an external charger.
See Section 3.2, “Programming the AMPS-24”, on page 32 for more information on programming
via PK-PPS. Refer to Section 4.2, “Calculating the Battery Requirements”, on page 44 for more
information on determining your system’s battery capacity.
2.8.2 Connecting the Power Supply to Two Batteries:
1. Use PK-PPS to set the charger to the appropriate current for the system’s battery capacity.
2. Connect one cable from TB3 (
BATT IN +) on the power supply to the positive (+) terminal of
one battery.
3. Connect another cable from TB3 (
BATT IN -) on the power supply to the negative (–) terminal
of the other battery.
4. Only after initial system power-up, connect a battery interconnect cable between the
negative (-) terminal on the first battery to the positive (+) terminal on the second battery.
To determine battery requirements, refer to Section 4 of this manual.
Figure 2.19 Connecting Two Batteries to the Power Supply
2.8.3 Connecting the Power Supply to Four Batteries:
1. Use PK-PPS to set the charger to the appropriate battery charger current for the system’s
battery capacity.
2. Continue the connection from the occupied positive (+) battery terminal to the positive (+)
terminal of the next unconnected battery.
3. Continue the connection from the occupied negative (–) battery terminal to the negative (–)
terminal of the remaining unconnected battery.
4. Only after initial system power-up, connect the two pairs of batteries. Use two battery
interconnect cables to tie each unoccupied negative (–) terminal to an unoccupied positive (+)
terminal, as shown in Figure 2.20.
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