ABB CPS6000 Product Manual page 187

Alarm /
Description
Event
The system DC output
voltage has reached a
low voltage threshold
generally set below the
BD threshold. This
Very Low
alarm is used to
Float
indicate that the
Voltage
battery reserve is
depleting and the DC
voltage is approaching
a critically low output
value.
Alarm asserted when
Voltage the controller detects
greater than 1.7V
Imbalance
difference
between two halves of
each battery string for
more than 24 hours.
Detect
Feature is enabled
through the use of 771
voltage modules.
Note 1: Communication loss with a single rectifier or any number of thermal probes is considered a
PMN alarm. Communication loss with the LVD card is considered a PMJ alarm.
Note 2: Communication loss with multiple rectifiers or devices other than thermal probes shall be
considered PMJ alarms.
Note 3: An alarm can be triggered from an external event if a user has properly configured the input
assignments. An alarm can be asserted either for closure or open to Vminus, depending on how user
has configured alarm.
All alarm relays are Form-C type and have the O, C, and R pins available on the controller connector J1.
The relays are rated for a maximum contact voltage of 60V
Page 187
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Default Range /
PMJ
Setting Severity
40-51V
46.0V
Major/
Major Minor/
RO
Disabled Enabled/
/ Major Disabled
(Major/
Minor/
RO)
Alarm Relays
PMN Relay 1 Relay 2 Relay 3
and maximum contact current of 0.5A.
dc
LED
PMJ PMN NORM
Relay 4
Red Yellow Green
LED
AUX
MD
Red