CPS SCA Series - Page 140

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Table 7-4 LCD Troubleshooting PROTECTION
Type
Error/State
Fault Description / Instruction
Protection
Protect0090
(Bus over voltage)
1. Restart inverter by turning both AC and DC switches off. Wait
for 1 minute for all energy to discharge and turn both switches
ON
2. If inverter cannot clear fault, replace inverter
Protect0070
(Bus imbalance)
1. Raise limit of IDCmax (for example, 400mA) to allow inverter
more room to adjust in transient condition to cope with
imbalance of impedance and voltage between Grid phases
2. If after adjustment, alarm still occurs, replace inverter
Protect0030
(Inverter Over Current)
1. Restart inverter by turning both AC and DC switches off. Wait
for 1 minute for all energy to discharge and turn both switches
ON
2. If inverter cannot clear fault, replace inverter
GridV.OutLim
1. Check the AC connections and AC voltage is within range
2. Restart the inverter again
GridF.OutLim
1. Check the AC connections and AC frequency is in range
2. Check the measured frequency value on the LCD, if within
limit, restart the inverter
Protect0020
(Grid relay error)
1. Restart inverter by turning both AC and DC switches off. Wait
for 1 minute for all energy to discharge and turn both switches
ON
2. If inverter cannot clear fault, replace inverter
Protection
TempOver
(Over-temperature
protection)
1. Confirm the external ambient temperature is within the
specified range of operating temperature
2. Check whether air inlet is blocked
3. Check whether fan is blocked
4. Check whether the location of installation is appropriate or not
5. Observe for 30 minutes and see whether the alarm will be
eliminated automatically
6. Contact post-sales service if not corrected
Protect0180
(The sampling offset of
DCI)
1. If the inverter can start up, then recalibrate
2. If the inverter consistently reports this alarm and can not start
up, then replace inverter
Protect0170
(DCI high)
1. Raise limit of DCImax (for example, 400mA) to allow inverter
more room to adjust in transient condition to cope with
imbalance of impedance and voltage between grid phases
2. After raising the limit, if inverter cannot clear fault, replace
inverter