Alpha Technologies VMX Series - Manual (Page 39)

39 017-940-B0-001, Rev. A
5.0 Operation, continued
5.2 Smart Display, continued
5.2.4 Alarm Indications, continued
Table 5-2, Major Alarms
Major Alarms
Active Alarm Corrective Action Probable Cause
Self-test FAIL* 1. Check batteries
2. Check inverter • 36V battery string below 33.3Vdc
• 48V battery string below 44.3Vdc
• Inverter failure
• Batteries will not sustain load
LOW BATT VOLTS 1. Shutdown imminent
2. Check AC input
3. Connect generator 36V battery string below 33Vdc
48V battery string below 44Vdc
HIGH BATT VOLTS 1. Check charger settings 36V battery string above 45.0Vdc
48V battery string aboce 60Vdc
NO BATTERIES 1. Check battery breaker
2. Check connections
3. Check battery fuse Absence of batteries detected
(alarm is inactive when battery capacity is set
to 0)
LINE ISOLATION** 1. Replace power supply Line isolation has failed. All inverter operations
are suspended
OUTPUT FAIL 1. Check confi guration switches
2. Output overloaded? The AC output has failed (check confi guration)
OUTPUT OVERLOAD 1. Check confi guration switches
2. Output short circuit?
3. Excessive load
4. Check output current
The VMX is overloaded
CHARGER FAILURE 1. Perform self-test Charger has failed or shutdown, possible bat-
tery over-temperature
INVERTER TEMP 1. Check fan Inverter heatsink has exceeded set temperature
(Standby operations are suspended until
temperature drops to safe level
CONFIG ERROR 1. Check confi guration switches
2. Check Inverter The VMX is improperly confi gured. Operation is
suspended until error is corrected.
* To clear a Latched Self-test Fail Alarm, initiate and complete a successful self-test.
** Remove and replace VMX Power Supply. Do not try to clear alarm.
Minor Alarms
Active Alarm Corrective Action Probable Cause of Alarm
BATT TEMP PROBE 1. Check connection
2. Check sensor
3. Input connections Remote Temp Sensor (RTS)
failed, or is not connected
INPUT FAILURE 1. Utility failure
2. Circuit breaker input Utility AC input has failed
Table 5-3, Minor Alarms