108
Item Method Interval
Safety function
• Check the emergency stop button and the Web
stop function;
• Simulation shutdown and check the shutdown
signal communication signal;
• Check the warning labels and other markings
for damage or unclearness. Replace them if
necessary.
From
every six
months to
annually
Software
maintenance
• Optimize software
• Check each parameter setting
From
every six
months to
annually
Wait at least 5 minutes after the PCS discharge completely since the DC bus con-
tains capacitance. Before cleaning, make sure, with multimeter, the internal PCS is
discharged completely to avoid electric shock.
Almost all maintenance work requires no internal protective cover during mainte-
nance. Make sure to reassembly the cover and fasten all the screws after the main-
tenance work.
Make sure all bolts are securely fixed.
The frequency of maintenance operations could be increased according to the en-
vironmental conditions of the place where the PCS is located, plant capacity and
on-site situations.
14.3 Replacing Electrical Components
The electrical components inside the PCS must be replaced by the same compo-
nents from the same manufacturer and with the same model number.
The model number can be acquired from the marking of the PCS or the component
itself. If otherwise, please contact SUNGROW.
14 Routine Maintenance User Manual
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