6
PCM500 SERIES
OPERATING MANUAL
float voltages.
8.6
Finally, in order, are the LED indicators: RFA-MIN, RFA-MAJ, ACFA, FA,
LVDA, OVA and UVA which are explained in Section 10.0.
9.0
BACK PANEL DESCRIPTION
9.1
From the left side are the four rectifier connectors J1 through J4 which con-
trol and monitor the rectifier shelves and individual rectifiers. J1 goes to
rectifier shelf no. 1, J2 to shelf no. 2., etc. See Figure 2.
9.2
In the center of the back panel are the 24 DIP switches which enable the
alarms for each rectifier, fuse or breaker panel, and low voltage disconnect.
Below the switches is the chassis ground terminal.
9.3
On the right side is the TB1 connector with 48 terminals for connecting two-
wire alarm inputs, alarm outputs and other input/output connections. These
terminals accept AWG nos. 14 to 22 wire sizes.
10.0
LED INDICATORS
10.1
Yellow LED. Indicates controller is in the equalize voltage mode (option),
determined by the front panel Equalize/Float switch.
10.2
Red LEDs. These are failure alarms indicating the following:
u
Rectifier Failure Alarm-Minor (a single rectifier failure)
u
Rectifier Failure Alarm -Major (two or more rectifier failures)
u
AC Input Failure (on any rectifier)
u
Failure on any Fuse or Circuit Breaker in a distribution panel
u
Failure on one or both Low Voltage Disconnects
u
Battery Overvoltage
u
Battery Undervoltage
11.0
FRONT PANEL ADJUSTMENT POTENTIOMETERS
There are five front panel adjustment potentiometers:
u
VFL: Float Voltage set (12 turns)
u
OV: Battery Overvoltage set (single turn)
u
UV: Battery Undervoltage set (single turn)
u
TC: Temperature Compensation set (single turn)
u
VEQ: Equalize Voltage set (single turn)
