Lucent Technologies Lineage 2000 ECS-12U User Manual

Lucent Technologies Lineage
®
2000 ECS-12U Controller J85501E-2
2 - 10 Product Description Issue 3 July 1998
should be disabled only for batteryless plants equipped with
only one rectifier. In such an application, the controller loses
power if the rectifier is shut down and, in the process, issues a
restart. If the one rectifier shuts down again, the cycle will repeat
since the controller will again lose power. To prevent a possible
infinite cycle of shutdown and restart, the automatic restart
function should be disabled for batteryless plants with only one
rectifier.
Rectifier Fail
Alarm
There are various types of failure conditions in different types of
rectifiers that result in a rectifier failure signal. Refer to the
appropriate rectifier manuals for details. Whenever a rectifier
fail signal is received by the controller from any rectifier,
however, the controller issues a Power Minor alarm (PMN) to
the office alarm system. A yellow RFA LED on the controller
front panel also lights.
The loss of one or more rectifiers is not necessarily a Major
alarm, unless the plant voltage drops and the batteries begin to
discharge. Rectifier Fail is, therefore, treated as a Minor alarm
by the controller, which issues three sets of Power Minor office
alarms. If loss of rectifier output is such that the plant voltage
drops significantly, a BD alarm is issued, which is a Major alarm
condition. If the controller is equipped with CP2, the alarm can
also be issued remotely. If it is equipped with CP3, the controller
can be programmed to provide a hardware RFA alarm.
If a failed rectifier is successfully restarted, either manually or
automatically, or if it disconnected from the controller interface,
the RFA LED will extinguish and the associated alarms will
retire.
AC Fail Alarm The AC Fail Alarm is intended to indicate that ac input power to
at least one rectifier has failed or dropped below a minimum
voltage. This alarm is provided as an isolated transfer contact for
the office alarm systems. An ACF alarm also lights a yellow
LED on the front panel of the controller.
ACF does not automatically result in a Power Major or Power
Minor alarm because users or installers may classify the loss of
ac power as either a Major, Minor, or no alarm condition. The
user or installer may hard wire parallel the ACF alarm to the
desired Power Alarm to give loss of ac the proper priority. See
Section 4, “Wiring,” for alarm wiring details. In plants with any

Lucent Technologies Lineage 2000 ECS-12U Specifications

General

Brand	Lucent Technologies
Model	Lineage 2000 ECS-12U
Category	Controller
Language	English