Primary Operation
Primary operation
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4.3.3 Trial run
Check cables and abnormalities before the trial run. After power on, the inverter is in the
external mode.
1. After power on, make sure that the indicating lamp power
is on.
2. Connect a switch between STF and SD or STR and SD.
3. Connect a potentiometer between 2-5-10 or provide 0~5V dc between 2 and 5.
4. Adjust potentiometer or 0~5V dc to a minimum value (under 1V).
5. If STF is on, forward rotation is activated. If STR is on, reverse rotation is activated. Turn
off STF or STR to decelerate the motor until it stops completely.
6. Check the following:
1) Whether the direction of motor rotation is correct.
2) Whether the rotation is smooth (check for any abnormal noise and vibration).
3) Whether the acceleration / deceleration is smooth.
If there is an optional keyboard panel, do the following:
1. Make sure that the keyboard panel is connected to the inverter properly.
2. Change the operation mode to PU mode after power on, and the screen will display
50/60Hz.
3. Press
button to set the target frequency at about 5Hz.
4. Press
FWD
for forward rotation and
REV
for reverse rotation. Press
STOP
STOP
RESET
RESET
t
o decelerate the
motor until it stops completely.
5. Check the following:
1). Whether the direction of motor rotation is correct.
2). Whether the rotation is smooth (check for any abnormal noise and vibration).
3). Whether the acceleration / deceleration is smooth.
If no abnormal condition is found, continue the trial run by increasing the frequency and go
through the above procedure. Put the machine into operation if no abnormal condition is
found.
Note: Stop working immediately if abnormalities are found when running the inverter or the motor. Check
for possible causes according to “fault diagnosis”. After inverter output is stopped and the power
terminals (R/L1, S/L2, and T/L3) of the main circuit are disconnected, electric shock may occur if
one touches the inverter’s output terminals (U/T1, V/T2, and W/T3).Even if the major loop power is
cut off, there is still recharging voltage in the filter capacitors. As a result, discharge takes time.
Once the major loop power is disconnected, wait for the power indicating lamp to go off before
testing the intermediate dc loop with a dc voltage meter. Once the voltage is confirmed to be below
the safe value, it is safe to touch the circuit inside the inverter.
