Battery Revert; Overview; Trickle Charger Voltage Adjustments; Battery Attachment - Motorola CDR500 Programming Manual

Overview

An optional battery revert accessory is available for the
CDR700 repeater station. The battery revert is an inte-
gral part of the power supply in the CDR500 repeater
housing. This accessory allows you to cable your unit
to a back-up battery which will engage in case of a
power outage.
Trickle Charger Voltage
Adjustments
1. Connect a digital multimeter to the two-con-
ductor barrier strip of the CDR500 repeater or
the 2-prong "Ford" connector of the battery
cable from the HLN9455 battery revert mod-
ule of the CDR700 repeater.
2. The charger float maintenance voltage is
adjustable. For the CDR500 repeater, adjust
the "BAT CHG ADJ" potentiometer, accessible
through the round hole in the housing near
the barrier strip. For the CDR700 repeater,
adjust the potentiometer of the HLN9455
module that is accessible through a round
hole in the plastic cover for the module.
3. For both revert modules, adjust the output
voltage for 13.6 V dc ±0.1 V dc. This is the rec-
ommended value for a sealed, lead acid, gel
cell battery. Other batteries may require a dif-
ferent float voltage. Consult the manufac-
turer's recommendation for other battery
types.
NOTE
The battery revert is adjustable between
12 and 15 V dc.
NOTE
A more accurate setting of the change
voltage will be obtained by loading the
output with a resistance sufficient to
draw a current equal to 0.001C where C is
the amp-hour rating of the battery.
4. Disconnect the digital multimeter from the
battery cable.
March, 2001

Battery Attachment

Refer to "Installing the HLN9455 Battery Revert Mod-
ule" on page 3-7, in Section 3 of this manual to install
the battery revert module into an CDR700 repeater
housing.
Batteries used to power the repeater sta-
tions contain great amounts of stored
energy. Use caution when working with
these units. Use insulate battery terminal
covers at all times. Wear protective cloth-
ing and eye goggles. For safety, it is
strongly recommended that BOTH the
positive and negative leads of the battery
cable are fused as close as possible to the
terminals of the battery.
Batteries may give off harmful or nox-
ious fumes during charging. Provide
adequate ventilation for the area in
which the battery is stored.
If the wires leading to the battery are
exposed, they can cause shorts or severe
damage.
To prevent damage, use a properly
fused battery cable.
Make sure the battery is fully charged
before connecting to the battery revert
for either t he CDR500 or CDR700
repeater stations. DO NOT connect a bat-
tery if the terminal voltage of the battery
is less than approximately 12.0 V dc.

CDR500 Repeater

1. The battery cable may be either a high power
mobile dc cable kit (such as the HKN9402) or
made from 14-gauge (or larger) stranded cop-
per, insulation coated wire. If a mobile cable
kit is used, cutoff the 2-prong "Ford" connec-
tor.
2. Per the "Warning" on this page, it is strongly
recommended that both leads of the battery
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Section 7

Battery Revert

WARNING
CAUTION
CAUTION
NOTE
7-1