Task 6 - Connect Mid-Point Monitoring (If Required - Sc200 Only) - Eaton RM3-400-0330 Installation And Operation Manual

RM3-400/410/420 Series Installation and Operation Guide

Task 6 - Connect Mid-point Monitoring (if required - SC200 only)

This task only applies to RM3-420 models when Battery Mid-point Monitoring is required. See
description of Battery Mid-point Monitoring on page 7.
Step 1 - Connect sense wires to the I/O board
1
2
3
4
Step 2 - Connect sense wires to batteries
1
2
3
4
Procedure complete
22
Remove top cover. See the diagram on page 3.
Route the Mid-point Monitoring sense wires to the I/O board via the cable access
hole.
Connect the sense wires to connected XH12.
If more than four battery strings are to be monitored (maximum is eight) then
connect a second IOBGP I/O board. Follow the procedure for SiteSure-3G
connection on page 21.
Replace top cover.
The Mid-point Monitoring sense wires must have short-circuit protection fitted close to
the battery terminals. Use the Battery Mid-point Monitoring kits from Eaton (see Spare
Parts on page 72) or equivalent.
Connect a Mid-point Monitoring sense wire to the middle interconnecting link on
each string of batteries (see following diagram).
Connect the wire from XH12A pin 1 to string 1, and so on.
If there are an odd number of 2V cells per string, then connect the sense wires to
the interconnecting link on the side of the central cell closer to the Common battery
terminal.
Tighten the terminals according to the battery supplier's/manufacturer's
installation instructions.
Insulate any un-connected sense wires.
Secure all sense wires to avoid any strain on the terminations.
Copyright © 2007-2010 Eaton Corporation. All Rights Reserved.
IPN 997-00012-62E
Mid-point Monitoring sense wire from
XH12A on the input/output board
Middle interconnecting link
June 2010