15
PCM500 SERIES
OPERATING MANUAL
17.0
INSTALLATION AND SETUP
17.1
Mounting. The PCM500 can be mounted in either 19- or 23-inch racks by
using the appropriate brackets. Mount it from the front of the rack using the
correct offsets to align with existing rack-mounted equipment. The bracket
offsets are every quarter-inch from front to back.
17.2
Setting the Battery Overvoltage. Set a 0-60VDC precision power source
or variable DC power supply with an output voltmeter to approximately 55V.
Turn the supply off and connect it to the PCM500 TB1 terminals as shown in
Figure 4. Turn the power supply back on and set the output voltage to the
desired voltage for the battery overvoltage alarm. Then adjust the front panel
OV potentiometer to the trip point where the OVA (overvoltage alarm) red
LED just barely turns on.
17.3
Setting the Battery Undervoltage. Using the same setup, set the 0-60V
supply to the desired voltage for the undervoltage alarm. Adjust the front
panel UV potentiometer to the trip point where the UVA (undervoltage alarm)
red LED just turns on. Turn off the 0-60V supply and disconnect it.
17.4
Setting the Battery Float Voltage. Connect a single rectifier to the
PCM500 by means of J1. Set the front panel EQ/FL switch to FL (float, down
position). Connect the B+ input (TB1 term. 10) and BS+ input (TB1 term. 39)
to the rectifier positive output. Connect the B- input (TB1 term. 11) and BS-
input (TB1 term. 38) to the rectifier negative output. Turn on the rectifier and
read the rectifier output voltage on the front panel voltmeter (option) or digital
voltmeter connected to the “volts” test points. Adjust the VFL (float voltage)
multi-turn potentiometer to the desired float voltage as read on the voltmeter.
17.5
Setting the Battery Equalize Voltage (Option). Continuing from above, set
the EQ/FL switch to EQ (equalize, up position). The EQA (equalize alarm)
yellow LED should turn on. Adjust the VEQ (equalize voltage) potentiometer
to the desired equalize voltage as read on the voltmeter.
17.6
Setting the Temperature Compensation Voltage (Option).
17.6.1
Make sure that the float voltage was set with the temperature
probe disconnected.
17.6.2
Before connecting the temperature probe, record the float voltage
to three digits.
Summary of Contents for PCM500 Series
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