Lucent Technologies Lineage
®
2000 ECS-12U Controller J85501E-2
Issue 3 July 1998 Product Description 2 - 5
IMPORTANT When the controller loses power, it also loses the ability to
detect alarm conditions in the plant. To prevent the danger
of unreported alarms, Power Major and Power Minor
alarms are automatically issued when the controller is
powered down.
IMPORTANT Not all rectifiers will perform properly without a battery.
Consult your rectifier manual.
Rectifier Sense
Leads
Separately fused sense leads run from the LVD/Fuse Board to
the rectifiers via the controller backplanes. These leads are not
interrupted when the 113B is removed. The rectifiers use the
sense leads to maintain the plant bus voltage independently of
any load-dependent voltage drop between their output terminals
and the bus.
Office Alarm
Contacts and
Alarm Battery
Supply
Alarm contacts are provided on the 113B that may be connected
to the office alarm system by the installer. (See Section 4,
“Wiring.”) Each set of contacts is a Form C or transfer type, i.e.,
a combination of normally open and normally closed contacts
with one side of each in common. The normally open contact is
referred to as O (other applications may call this the NO
contact). The normally closed contact is referred to as C (other
applications may call this the NC contact). The common or
return contact is referred to as R (other applications may call this
the C contact). Each Form C set is isolated. An alarm set is
provided for each type of alarm condition, as follows:
AC Failure (ACF)
Major Fuse Failure (MJF)
Minor Fuse Failure (MNF)
High Voltage (HV)
Battery on Discharge (BD)
Low Voltage Battery Disconnect (LV)
In addition, alarms that are classified as Major or Minor cause a
group of general-purpose Major or Minor alarms, as follows:
Power Major - Visible (PMJV)
Power Major - Audible (PMJA)
Power Major - External (PMJE)
Power Minor - Visible (PMNV)
Power Minor - Audible (PMNA)
Power Minor - External (PMNE)
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