Eaton EFX48 e-Fuse Series, Installation And Operation Manual

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EFX48-xx Series with RM3-340/440 Installation and Operation Guide
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Copyright © 2019 Eaton Corporation. All Rights Reserved.
IPN March 2019
Task 5 - Install the Batteries

•
Always check that the battery cables have been terminated to the correct system polarity
BEFORE connecting the batteries or closing the battery disconnect device.
•
Connecting batteries to the system with incorrect system polarity will void all warranty
claims.
Step 1 - Install the batteries
Follow the battery supplier's/manufacturer's installation instructions.
Task 6 - Connect Mid-point Monitoring (if required)
This task applies to all models when Battery Mid-point Monitoring is required. See description
of Battery Mid-point Monitoring on page 94.
Step 1 - Connect sense wires to the EFX48 e-Fuse unit
1
Route the Mid-point Monitoring sense wires to the 14-way General Purpose I/O
(GPIO) terminal block on the front of the EFX48 e-Fuse unit.
2
Connect the sense wire from string 1 to GPIO4 and the sense wire from string 2 to
GPIO5 according to the contact arrangement on page 151.

A maximum of two battery strings can be monitored.
Step 2 - Connect sense wires to batteries
 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 154) or equivalent.
1
Connect a Mid-point Monitoring sense wire to the middle interconnecting link on
each string of batteries (see following diagram).

Connect the wire from 14-way General Purpose I/O (GPIO) terminal block
pin 4 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.
2
Tighten the terminals according to the battery supplier's/manufacturer's
installation instructions.
3
Insulate any un-connected sense wires.
4
Secure all sense wires to avoid any strain on the terminations.