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2.6.2.1 Multiple Module Battery Connection - Siemens PAD-4 Installation, Operation And Maintenance Manual

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PAD-4 Installation, Operation and Maintenance Manual

2.6.2.1 Multiple Module Battery Connection

For applications where multiple PAD-4 boards are
mounted in an enclosure with System 3 rails, it
may be possible to connect two boards to a
single battery set. When using a single battery set
for two boards, the following rules must be
followed:
a) Both PAD-4 boards must be located within
the same enclosure and mounted adjacent to
each other.
b) The combined battery A.H. rating required for
both boards does not exceed 18 A.H.
c) Each PAD-4 and associated FP2011-U1
must be mounted on S3AP adapters. Refer to
the S3AP manual, P/N 315-050257.
d) One of the PAD-4 boards must have its
charging circuit disabled.
e) Two (2) battery connection splitters (part
number 230-299203) are used on the battery
set for proper connection.
The following steps and diagrams explain how to
connect two PAD-4 boards to a single battery set.
1. Install a battery connection splitter (see
Figure 2-10) to the positive and negative
terminals on the battery set. If the battery set
contains two 12-volt batteries to be wired in
series, install one splitter on the positive
terminal of battery #1 and the other to the
negative terminal of the battery #2.
2. Connect the black wires from both PAD-4
boards to the splitter on the negative terminal
of battery #2.
3. If the battery set contains two 12-volt
batteries, connect the jumper wire from the
remaining single positive terminal of battery
#2 to the negative terminal on battery #1.
4. Connect the red wires from both PAD-4
boards to the splitter on the positive terminal
of battery #1. See Figure 2-11.
5. Disable the battery charger on one of the
units. See Section 5.2 for directions.
12
To Battery Terminal
Figure 2-10
Battery Connection Splitter
To PAD-4
Figure 2-11
Dual Module Battery Connection
To each PAD-4
battery connection
terminal
To PAD-4

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