Fuji Electric Frenic Mega Series - Page 8

Safety precautions
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• The cooling fin and braking resistor become very hot. Never touch them.
Otherwise, a burn could occur.
• The DC braking function of the inverter does not provide any holding mechanism.
Otherwise, an injury could occur.
• Run commands (e.g., "Run forward" FWD), stop commands (e.g., "Coast to a stop" BX), and frequency
change commands can be assigned to digital input terminals. Depending upon the assignment states of
those terminals, modifying the function code setting may cause a sudden motor start or an abrupt change in
speed. Change the function code setting after making sure that safety is ensured.
• In digital input, the run and frequency command sources can be switched using "SS1, 2, 4, 8", "Hz2/Hz1",
"Hz/PID", "IVS", and "LE". When switching these signals, the motor may run suddenly or change speed
rapidly.
• Ensure safety before modifying customizable logic related function code settings (U codes and related
function codes) or turning ON the "Cancel customizable logic" terminal command CLC. Depending upon the
settings, such modification or cancellation of the customizable logic may change the operation sequence to
cause a sudden motor start or an unexpected motor operation.
Otherwise, an accident or injury could occur.
Maintenance and parts replacement
• Turn OFF the power and wait at least five minutes for inverters with a capacity of 22 kW or below, or at least
ten minutes for inverters with a capacity of 30 kW or above. Make sure that the LED monitor and charging
lamp are turned OFF. Further, make sure, using a multimeter or a similar instrument, that the DC link bus
voltage between the terminals P (+) and N (-) has dropped to the safe level (+25 VDC or below).
Otherwise, an electric shock could occur.
• Maintenance and parts replacement should be done by a specified person.
• Take off any metal objects (e.g., watch, ring) before work.
• Use insulated tools.
• Never alter anything.
Otherwise, an electric shock or injury could occur.
Disposal
• Dispose of the FRENIC-MEGA as an industrial waste.
Otherwise, an injury could occur.