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4-3 Alarm List
In Table 4-12, it provides the complete list of UPS alarm messages.
Table 4-12: Alarm List
Representation in display LCD
Fault! <01>Bus start fail
Fault! <02>Bus over
Fault! <03>Bus under
Fault! <04>Bus unbalance
Fault! <05>Bus dec fast
Fault! <06>Conv over cur
Fault! <11>INV start fail
Fault! <12>High INV VOL
Fault! <13>Low INV VOL
Fault! <14>INV A out SC
Fault! <15>INV B out SC
Fault! <16>INV C out SC
Fault! <17>INV AB out SC
Fault! <18>INV BC out SC
Fault! <19>INV AC out SC
Fault! <1A>INV A N-fault
Fault! <1B>INV B N-fault
Fault! <1C>INV C N-fault
Fault! <21>BATT SCR SC
Fault! <23>INV relay open
Fault! <25>In&out swop
Fault! <29>BATT fuse broken
Fault! <31>Par commu fail
Fault! <36>Par out cur unb
Fault! <41>Over temp
Fault! <42>DSP commu fail
Fault! <43>Overload
Fault! <45>Charger error
Fault! <46>Incorrect UPS set
Fault! <47>DSP&MCU commu fail
Fault! <49>In&out phase incomp
Fault! <61>BYP SCR SC
Fault! <62>BYP SCR open
Fault! <63>INV R wave abnormal
Fault! <64>INV S wave abnormal
Fault! <65>INV T wave abnormal
Fault! <66>CT saturation
Fault! <67>BYP out SC
Fault! <68>BYP out line SC
Fault! <69>INV SCR SC
Fault! <6C>Bus-VOL dec fast
Fault! <6D>CUR detect err
Fault! <6E>SPS Power fault
Fault! <6F>BATT reversal
Fault! <71>R PFC IGBT fault
Fault! <72>S PFC IGBT fault
Fault! <73>T PFC IGBT fault
Fault! <74>R INV IGBT fault
Explanation
BUS soft start failed
BUS voltage high
BUS voltage low
BUS voltage unbalanced
BUS voltage drop too fast
Converter over current
Inverter soft start failed
Inverter voltage high
Inverter voltage low
Phase A (Line to Neutral) output short circuited
Phase B (Line to Neutral) output short circuited
Phase C (Line to Neutral) output short circuited
Phase A-Phase B (Line to Line) output short circuited
Phase B-Phase C (Line to Line) output short circuited
Phase C-Phase A (Line to Line) output short circuited
Phase A output negative power fault
Phase B output negative power fault
Phase C output negative power fault
Battery SCR short circuited
Inverter relay open circuited
Line wiring fault
Battery fuse open circuited
Parallel communication failed
Parallel output current unbalanced
Over temperature
DSP communication failed
Heavy overload causes UPS fault
As stated.
Incorrect UPS setting
MCU communication failed
Input and output phase error
Bypass SCR short circuited
Bypass SCR open circuited
Voltage waveform abnormal in R phase
Voltage waveform abnormal in S phase
Voltage waveform abnormal in T phase
As stated.
Bypass output short circuited
Bypass output line to line short circuited
Inverter Relay short circuited
BUS voltage drop too fast
Current sampling error value
SPS Power fault
Battery polarity reverse
PFC IGBT over-current in R phase
PFC IGBT over-current in S phase
PFC IGBT over-current in T phase
INV IGBT over-current in R phase
60
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