EA660 Modular UPS
User manual & Operation explain
45
T OVER LOAD
T ph output overloaded
requirment.
DCP OWE VOLT
DC+ low voltage
DCP OWE DOWN
DC+voltage
,
equipped to
shut off
DCP OVER VOLT
DC+ low voltage
DCN OWE VOLT
DC- low voltage
DCN OWE DOWN
DC- low voltage, equipped
to shut off
DCN OVER VOLT
DC-over voltage
1
、
check the DC MCCB of the DC+&DC- whether
shut off..
2
、
check the DC+&DC- voltages the terminals’
top .
3
、
check the DC+&DC- voltagse the terminals’
bottom.
DC P OVER N
DC gap high DC+ > DC-
DC N OVER P
DC gap high DC+ < DC-
1
、
check DC voltage at the overall monitoring
screen
2
、
check the DC+&DC- voltages the terminals’
top .
3
、
check the DC+&DC- voltages the terminals’
bottom..
RHV LOAD BYP
R ph over voltage and
transfer to bypass
SHV LOAD BYP
S ph over voltage and
transfer to bypass
THV LOAD BYP
T ph over voltage and
transfer to bypass
RLV LOAD BYP
R ph low voltage and
transfer to bypass
SLV LOAD BYP
S ph low voltage and
transfer to bypass
TLV LOAD BYP
T ph low voltage and
transfer to bypass
1
、
check the inverter output wave on load.
2
、
check module’
s status
DC OWE CMD C
DC low, command of start
cancelled
DC OVER CMD C
DC high, command of start
cancelled
DC+/- GAP CMD C
Dc gap high, command of
start cancelled
1.check DC voltage at the overall monitoring screen
2.check the DC+&DC- voltages the terminals’
top .
3.check the DC+&DC- voltages the terminals’
bottom..
BYP ERR CMD C
Byapass fault, command
ofstart cancelled.
1.check the bypass voltage at the input monitoring
screen
2.check UPS 3ph voltage of the bypass teminals’
top.
3. check UPS 3ph voltage of the bypass
teminals’bottom.
AC ERR CMD C
AC abnormal, command
Of constant charigng,
cancelled.
1.check the AC voltage at the input monitoring screen
2. check the UPS 3phase voltage of the AC termnials’
top
3. check the UPS 3phase voltage of the AC termnials’
bottom.
SYNC ERROR
Inverter&bypass
unsynchronaztion
1
、
check the waves of the iverter and bypass
2
、
check the inverter and bypas’
s phase sequence.