Contact Information
About OutBack Power
OutBack Power is a leader in advanced energy conversion technology. OutBack Power products include true
sinewave inverter/chargers, maximum power point tracking charge controllers, and system communication
components, as well as circuit breakers, batteries, accessories, and assembled systems.
Contact Information
Mailing Address: 1628 – West Williams Drive
Phoenix, AZ 5027 USA
Web Site: www.outbackpower.com
Disclaimer
UNLESS SPECIFICALLY AGREED TO IN WRITING, OUTBACK POWER:
(a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL
OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION.
(b) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSS OR DAMAGE, WHETHER DIRECT,
NDIRECT, CONSEQUENTIAL OR INCIDENTAL, WHICH MIGHT ARISE OUT OF THE USE OF SUCH
INFORMATION. THE USE OF ANY SUCH INFORMATION WILL BE ENTIRELY AT THE USER’S RISK.
OutBack Power cannot be responsible for system failure, damages, or injury resulting from improper
installation of their products.
Notice of Copyright
FLEXnet DC Battery Monitor Overview Guide © 2020 by OutBack Power Technologies, Inc.
All Rights Reserved.
Trademarks
Trademarks and logos are the property of OutBack Power Technologies, Inc. and its affiliates unless
otherwise noted. Subject to revisions without notice. E. & O.E. UL is a registered trademark of UL LLC.
IEEE is the registered trademark of The Institute of Electrical and Electronics Engineers, Inc.
Date and Revision
August 2020, Revision C
Part Number
900-0093-12-00 Rev C
FLEXnet DC Battery Monitor
Overview Guide
Contents
Specifi cations 2
Installation 3
Wiring 4
Programming 6
Monitoring 8
Operation 12
Example Use Cases 16
Troubleshooting Guide 18
Calibration 19
Introduction
OutBack Power’s FLEXnet DC (FN-DC) is a battery monitoring
device that serves as a window to the battery bank. By
tracking battery voltage and the amount of incoming and
outgoing current, the FN-DC indicates the battery bank’s state of
charge (SOC) and enables users to precisely confi gure charging
parameters to maximize battery performance and lifespan.
The FN-DC also provides an auxiliary relay that can activate a
ventilation fan, low-battery warning alarm, or other low-voltage
DC device. The MATE3s can use the FN-DC’s information to
stop all charging devices when the batteries are full.
Included
A: FLEXnet DC
B: 10-pin Wiring Block
C: 6' CAT5 cable for HUB connection
D: 10' Twisted-Pair (TP) cable for battery connection
E: Three 6' TP cables for shunt connections
F: Two #6 × ⅜" pan head machine screws (not pictured)
G: Colored labels (not pictured)
NOTES:
For programming and full functionality, this product requires
the use of an OutBack Power system display such as the
MATE3s. It is intended to monitor systems with OutBack
Power inverters, charge controllers, and related products.
This document assumes knowledge of features, functions,
and operation of other OutBack Power products. Consult
appropriate literature as necessary.
IMPORTANT:
This document provides instructions for installation, setup, and
operation of the product. These instructions are for use by
qualifi ed personnel who meet all local and governmental code
requirements for licensing and training for the installation of
electrical power systems with AC and DC voltage up to 600 volts.
Failure to install or use this equipment as instructed in the
literature can result in damage to the equipment that may not
be covered under the limited warranty. This product is only
serviceable by qualifi ed personnel.
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