6. Normal operation
6.8 AFCI function
Canadian Solar inverters have the built-in AFCI function which can detect the arc fault
on the DC circuit and shut down the inverter to prevent a fire disaster.
6.8
.
1 Enable the AFCI function
The AFCI function can be enabled in the following.
Path: Advanced Setting -> Password: 0010 ->Special Settings -> AFCI Set ->
AFCI ON/OFF -> ON
Figure 6.51 Set AFCI
AFCI ON/OFF
AFCI Level
ON
OFF
NOTE:
The setting corresponds to the current status as well which can be used to
inspect the ON/OFF state of the AFCI function.
Warning:
The "AFCI Level" is reserved for Canadian Solar technicians ONLY.
Do not change the sensitivity otherwise it will lead to frequent false alarms or
malfunctions. Canadian Solar is not responsible for any further damages
caused by unauthorized modifications.
6.8
.
2 Arc Fault
During the normal operation, if an DC arc is detected, the inverter will shut down
and give out the following alarm:
Installer needs to thoroughly inspect the DC circuit to ensure all the cables are
correctly fastened.
Once the DC circuit issue has been fixed or it is confirmed to be OK, press “ESC” for
3s and wait for the inverter to restart.
ARC-FAULT
Restart Press ESC 3s
Figure 6.52 Arc Fault
.63.
.62.
Canadian Solar Three Phase Inverter does not require any regular maintenance. However,
cleaning the dust on heat-sink will help the inverter to dissipate the heat and increase its life
time. The dust can be removed with a soft brush.
CAUTION:
Do not touch the inverter's surface when it is operating. Some parts of the
inverter may be hot and cause burns. Turn off the inverter (refer to Section
6.2) and wait for a cool-down period before any maintenance or cleaning
operation.
The LCD and the LED status indicator lights can be cleaned with a damp cloth if they are too
dirty to be read.
NOTE:
Never use any solvents, abrasives or corrosive materials to clean the inverter.
7.1 Anti-PID Function
Figure 7.1
PID
U
V
W
V+
GND
PV+
PV-
Inverter
WARNING
:
The PID function is automatic. When the DC bus voltage is lower than 50Vdc,
the PID module will start creating 450 Vdc between PV- and ground.
No need any control or settings
The Anti-PID module repairs the PID effect of the PV model at night. When operating,
the inverter LCD screen displays " PID-repairing " information, and the red light is on.
The Anti-PID function is always ON when AC is applied.
If maintenance is required and turn off the AC switch can disable the Anti-PID function.
7. Maintenance
Canadian Solar inverter integrates optional Anti-PID module and it can recover the PID
effect during night thus protect the PV system from degradation.
