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USER’S GUIDE
Battery Management System
170
Alarm Relay and LED Operation
Situation/Condition Alarm Relay Status LEDs
N
OTE: Alarm Relay
operates as a “Fail-
Safe” device that is
energized during
non-alarmed periods.
Normally Open
Contacts (de-
energized)
Management
Controller
Batteries Charger Environment
Normal Operations Closed
(energized)
On On On On
Management System
Fault
Open
(de-energized)
Flash On On On
High or low
environment
temperature or
auxiliary environment
sensor alarm
Open
(de-energized)
On On On Flash
Charger Fault - High
or low charging
voltage or high ripple
current
Open On On Flash On
Connection fuse or
wiring fault
Open Flash On On On
Battery Fault - Low
capacity, high ohmic
value, shorted cell or
thermal runaway
Open On Flash On On
Missing or Faulty
Sensor
Open Flash On On On
System off or loss of
input power
Open Off Off Off Off