Lucent Technologies Lineage
®
2000 ECS-6 Controller J85501D-1
Issue 6 August 1998
Product Description 2 - 11
Front Panel
Status Indicators
Light-emitting diodes (LEDs) are located on the controller front
panel to indicate the alarm status of the battery plant.
Yellow LEDs indicate the following conditions, including (but
not restricted to) Power Minor alarms:
Minor Fuse Alarm (MNF)
Rectifier Fail Alarm (RFA)
AC Fail (ACF)
Equalize On (EQ)
Microprocessor Alarm (
µ
P)
Datalogger Alarm (DLA)
Red LEDs indicate the following Power Major alarms:
Battery on Discharge (BD)
Major Fuse Alarm (MJF)
When no alarms are present and the controller is powered, the
green NORM LED lights to indicate normal operation. The EQ
(Equalize) LED may light when the NORM LED is on, since
equalize is not considered an alarm condition. See Section 4 for
more information on the equalize function.
Front Panel
Meter
A four-digit, backlit liquid-crystal display is located on the front
panel. A toggle switch next to the display selects either the plant
voltage or the plant load current to be shown. A calibration
potentiometer (R407) on the CP4 display board is used for fine
adjustment of the plant voltmeter. See Figure 2-3.
When the meter select switch on the front panel is set in the
AMPS position, the display indicates the plant load current in
amperes. This current is measured with a calibrated shunt
located in the dc distribution return bus.
A slide switch (SW409) or jumper (P401) is available on the
CP4 display board to set a decimal point after the third digit. For
maximum plant currents of 999A or less, place the jumper or
slide switch in the decimal position (DEC); for currents over
999A, place the jumper or slide switch to the no decimal position
(NO DEC). See Figure 2-3.
Ammeter Scale
Plant shunts are available with standard full-scale dc output
voltages for a variety of full-scale dc currents. The signal from
