![background image](http://html1.mh-extra.com/html/eaton/sc300/sc300_operation-handbook_4128896083.webp)
System Operation
Copyright © 2007-2018 Eaton Corporation. All Rights Reserved.
IPN 997-00012-03 B2 Issue B2 July 2018
77
Reverse Battery Detection
If
Reverse Battery Detection
is enabled and a battery is connected with the incorrect polarity, the
SC300 will:
•
Activate a
Wrong Battery Polarity
alarm, and
•
Prevent any LVD from connecting.
Reverse Battery Detection uses the battery mid-point monitoring (MPM) analog inputs on an
IOBGP Input / Output board. Any of the mid-point monitoring analog inputs used for Reverse
Battery Detection are not available for MPM or QPM (see details on page 70).
► To enable Reverse Battery Detection
1
Before the batteries are connected to the dc power system, connect the mid-point monitoring
sense wires to the battery sides of the battery fuses/disconnect devices (leave the
fuses/disconnect devices open). Refer to the dc power system Installation and Operation
Guide.
There are four mid-point monitoring analog inputs on an IOBGP Input / Output board (for four
battery fuses/disconnect devices). Up to 20 additional battery fuses/disconnect devices can be
connected if additional IOBGP Input / Output boards are connected. Refer to the dc power system
Installation and Operation Guide for details on how to connect additional IOBGP Input / Output
boards to the SC300.
2
On DCTools/web, go to
Analog Inputs
and for each mid-point monitoring analog inputs used
(one per battery fuses/disconnect devices) set the following parameters.
To change a setting, double-click and select from drop down list or edit the text.
Parameter
Setting
Status
Set to
Enable
.
Name
Set to:
Battery Polarity Detect 1
,
Battery Polarity Detect 2
, ...
Function
Set to
Reverse Battery Detect
.
Units
Set to
Volts
.
IOB Number
Set to 1 for battery fuses/disconnect devices 1-4.
Set to 2 for battery fuses/disconnect devices 5-8.
...
IOB AI Number
Set to 2 for battery fuses/disconnect devices 1, 5, 9 ...
Set to 3 for battery fuses/disconnect devices 2, 6, 10 ...
...
Gain
Set to 1.
Offset
Set to 0.
Group
Set to 0 unless using Groups in PowerManagerII. See PowerManagerII online
help for details.
3
On DCTools/web, go to Alarms > Alarm States table, and check the Wrong Battery Polarity
alarm is enabled.
4
If necessary, expand the table and enable the Wrong Battery Polarity alarm.
Wrong Battery Polarity Alarm
If
Reverse Battery Detection
is connected and enabled, the SC300 will activate a
Wrong Battery Polarity
alarm if it detects that one or more of the batteries are connected with the wrong polarity.