User Manual 200 kVA-1200 kVA UPS
Appendix 1 Alarm List
91
715
Quick under-voltage of (inverter)
output
Load impact, or quick power failure
1111
Switching load impact to bypass
Load impact, or short circuit
330
Backup time pre-alarm
Normal battery discharge, or battery management
calculation error
331
Remaining capacity pre-alarm
Normal battery discharge, or battery management
calculation error
654
Phase lock failure
Abnormal bypass phase lock, abnormal output phase
lock, or abnormal inverter output lock bypass
1109
System self-inspection failure
Possible cause for failure upon powering on for first
time
1.
No UPM online (communication failure or no
UPM)
2.
All UPM setting disenabled in the monitoring panel
3.
Failure to start due to the failure of any UPM during
starting.
1100
Abnormal CAN communication
between system board and inverter
module
Communication failure. Check whether the connecting
wire is disconnected, the wire jumper of the pull-down
resistor of CAN communication bus is normal, and the
inverter DSP of UPM is halted abnormally or powered
down.
1200
Abnormal CAN communication
between parallel system boards
1.
Communication failure. Check whether the
connecting wire is disconnected, the wire jumper of
the pull-down resistor of CAN communication bus
is normal, and the inverter DSP of UPM is halted
abnormally or powered down.
2.
Check for same ID of rack
636
Bypass EEPROM operation failure
If conditions permit, try several times to repeatedly
power up and down, see whether the fault has been
reported always, and test whether the hardware chip is
normal
638
Emergency shutdown
Check for external emergency stop dry contact trigger
signal and check for manual EPO in the advanced
setting of the panel
642/643
Bypass fan failure
Fan failure, or improper fan cables
619/620/621
Open circuit failure of bypass SCR\
fuse
Open circuit of bypass SCR or fuse
622/623/624
Short circuit failure of bypass SCR
Starting for short circuit of bypass SCR or inverter
contactor
625/626
Auxiliary power supply failure of
bypass
Abnormal auxiliary power supply of bypass
Summary of Contents for EA990 Super
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