Appendix Ⅺ Sinexcel Common Fault Diagnosis - Sinexcel SVG 100 Ultra User Manual

APPENDIX Ⅺ SINEXCEL COMMON FAULT DIAGNOSIS
For common failures some failures and alarms can be solved by the user on site. If it can't be resolved, please
contact Sinexcel.
The failures caused by improper use, such as CT cable reverse, CT polarity error, power cable phase
sequence error and parameter setting error, can be found by checking the data in the power on process. For
poor compensation effect and no alarm information, please contact Sinexcel.
Alarm
Inverter short-circuit fault
Output current abnormal
Inverter overheat
CT ratio setting error
Inverter overload
Frequency abnormal
Input voltage abnormal
Input phase sequence error
Monitor parameter setting fault
Emergency shutdown
Communication failure
Table A- 23 Sinexcel Common Fault Diagnosis
Common cause
Short-circuit, the current is beyond the
tolerant range of IGBT
The load current changes too fast
Resonance
Environment temperature is high
Ventilation is blocked
Fan is broken.
The load current is bigger than the rated
current of CT
CT wiring is wrong
The module faulty alarm
Resonance
Input voltage frequency is beyond range
[45Hz~62.5Hz]
Frequency is over range.
Faulty alarm
Voltage is beyond module tolerable range
Wire connection error
Fuse is broken
Phase sequence connect wrong
CT location is wrong
Total capacity setting is wrong
Emergency button is pressed down
The emergency button is normal closed
type
The connection of EPO is not correct.
False alarm of monitor.
The module is broken
RS485 cable connection is wrong
Dip switch setting error
92
Solution
Contact Sinexcel engineer
Check if the load current change fast
when the alarm appears. If so, use
password '654321' to enter the setting,
change 'Comp. mode' to sequential,
change 'Input current abnormal' to
'Disable'
If the alarm is caused by resonance,
please refer to resonance debugging
manual and contact Sinexcel
Check if the ambient temperature is over
40℃
Check the air flow way of module
Check whether all fans are working.
Check whether the setting parameter
'Temperature derating' is enable.
Check whether we choose the correct
size of CTs.
Check the CT cable wiring
Try to click 'Clear Alarm' on the HMI to
see if the alarm will disappear
If the alarm is caused by resonance,
please refer to resonance debugging
manual and contact Sinexcel
Check if the grid frequency is beyond the
range: 45-62.5Hz
Try to click 'Clear Alarm' on the HMI to
see if the alarm will disappear
Check whether the voltage level is
beyond the range of product.
Check the connection of the power
cable.
If the voltage is normal and the cable
connection is correct, please contact
Sinexcel engineer, it might need to check
the internal fuse
Check the power terminal connection
Check if the CT location setting is correct
Check if the total capacity setting is
correct
Check if the emergency button is
pressed down
Check if the emergency button is normal
closed type, if so, please change to
normal open type
Try to click 'Clear Alarm' on the HMI to
see if the alarm will disappear
If all things are fine, please contact
Sinexcel engineer
Check the cable connection of RS485
Check if the dip switch is correct