4 Operating From a Personal Computer
36
Operation Guide Flatpack MCU,
351300.013, v8-2006-07
TYPE OF ALARM
RESETTING
High Battery1 / High Battery 2
This alarm is reported if the output voltage exceeds the applicable High Voltage Limit
Automatic reset
(1 V hysteresis)
Low Battery1 / Low Battery 2
This alarm is reported if the output exceeds the applicable Low Voltage Limit
Automatic reset
(1 V hysteresis)
LVD1 / LVD2 / LVD3
This alarm is reported if the load or batteries are disconnected by the MCU. LVD
conditions are checked every second.
Automatic reset when contactor is
reconnected
Battery Fuse
This alarm is reported if any battery fuse or breaker has opened or tripped
Automatic reset
Rectifier
This alarm is reported if one rectifier malfunctions. Alarm may be masked under Mains
Fail condition, depending on Installation Settings.
Automatic reset
Critical Rectifier
This alarm is reported if more than one rectifier malfunctions. Alarm may be masked
under Mains Fail condition, depending on Installation Settings.
Automatic reset
Mains
This alarm is reported if the mains supply fails
Automatic reset
Battery Test
Battery test in progress
Manual reset
Battery Pre
This alarm is reported if the result of a battery capacity test is less than 80 % (<
80 %) and higher than 75 % (> 75 %)
Manual reset
Battery Fault
This alarm is reported if the result of a battery capacity test is less than 75 % (< 75 %)
Manual reset
Common
This alarm is reported if one or more alarms are active and is indicated by the Alarm LED
on the front panel of Flatpack MCU and by Alarm ON (OFF) on the status lines (except
when battery test is in progress)
Automatic reset when no active
alarms remain
Load Fuse
This alarm is reported if any load fuse or breaker has opened or tripped
Automatic reset
Symmetry 1
This alarm is reported if there is a symmetry fault in any battery string monitored by the
Flatpack MCU’s internal symmetry monitoring circuits
Automatic reset
Symmetry 2
This alarm is reported if there is a fault reported by an external symmetry monitoring
PCB.
Automatic reset
High Temp. 1
Only active if temperature compensated charging is active. Gives an alarm if the battery
temperature is above temperature alarm level 1
Automatic reset
High Temp. 2
Only active if temperature compensated charging is active. Gives an alarm if the battery
temperature is above temperature alarm level 2.
Automatic reset
On Battery
Gives an alarm if the battery current is above 5 amperes for >10 seconds.
Automatic reset
Sensor
Gives an alarm if the temperature sensor reading exceeds the range of –35°C to +100°C,
indicating an open or shorted sensor, respectively.
Automatic reset
Low Temp
Only active if temperature compensated charging is active. Gives an alarm if the battery
temperature is below the temperature alarm level.
Automatic reset
Rectifier Capacity
Gives an alarm if the rectifier current is above the alarm threshold.
Automatic reset
Conf. Inp. 1 - Conf. Inp. 5
Refers to one of five configurable digital inputs, usable for monitoring external
equipment. The name can be changed to reflect the usage of the input, for example
“HVAC Fault” or “Open Door”.
Automatic reset
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