7. OPERATIONAL PROCEDURES, MAINTENANCE,
AND TROUBLE SHOOTING
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(1) Operational procedure and operations
DANGER
1. After turn off power source, please don't touch the inverter and
change the wiring when indicator is light.
CAUTION
1. After wiring, double check is absolutely necessary.
2. Keep terminal connected tightly with wire.
A. Be sure that the voltages of power source, motor and inverter are
matched.
B. Connect power source lines to R, S and T terminals of inverter.
C. Turn on the power source, set the function codes and parameters,
and check that the voltages of U, V and W terminals are correct or
not. Then, turn off the power source.
D. Turn off the power source and wait until that the LED is off, motor
lines are connected to U, V and W terminals of inverter.
E. Turn on the power source and check the rotating direction of motor
with low speed.
F.
User has to use the ON/OFF switch on keypad to start/stop inverter.
If the switch of power source is used to start/stop inverter, the
lifetime of inverter will be reduced.
G. It is not permitted that use of a magnetic contact installed between
an inverter and the motor to start/stop motor. In general, the start
current of motor is about 5 to 8 times of its rated current.
H. How to properly size an inverter for a single-phase power supply
with a three-phase motor.
Determine motor horsepower required for particular application.
Divide the motors full load amperage by 0.5 the result of that
calculation is the basis of sizing the inverter. Select an inverter with
continuous amperage rating that is equal to or greater than the result.
Formula: FLA of motor / 0.5 = Inverter Amps
EXAMPLE:
a. Invert selection: 230Vac, 3HP motor = 9.6A 9.6A/0.5 = 19.2A
230Vac, 3HP inverter = 11A continuous
230Vac, 7.5HP inverter = 25A continuous
You would select the 7.5HP inverter for this application.
b. Parameters setting: Without doing this setup could result in drive
and/or motor failure
F_048 motor rated current = 9.6A (according to the spec. of motor)
F_068 Level of overload setting = 80 (The half of original
setting160%)
F_071Level of stall prevention at the constant speed =80 (The half
of original setting160%)
Содержание RM5G
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