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Step of operation
4
DRIVING THE MOTOR
4 DRIVING THE MOTOR
4.1 Step of operation
The inverter needs frequency command and start command. Frequency command (set frequency) determines the
rotation speed of the motor. Turning ON the start command starts the motor to rotate.
Refer to the flow chart below to perform setting.
·When protecting the motor from overheat by the inverter, set Pr.9 Electronic thermal O/L relay (Refer to
page 57)
· When the rated frequency of the motor is 50Hz, set Pr.3 Base frequency (Refer to page 58)
CAUTION
Check the following items before powering ON the inverter.
· Check that the inverter is installed correctly in a correct place. (Refer to page 10)
· Check that wiring is correct. (Refer to page 12)
· Check that no load is connected to the motor.
Connect a switch, relay, etc.
to the control circuit
terminal block of the inverter
to give a start command. (External)
Start command using the PU connector and RS-485
terminal of the inverter and plug-in option (Communication)
Set from the
PU (FR-DU07/
FR-PU04/
FR-PU07).
(PU)
Change frequency
with ON/OFF switches
connected to terminals
(multi-speed setting)
Perform frequency
setting by a current
output device
(Connection across
terminals 4-5)
Perform frequency
setting by a voltage
output device
(Connection across
terminals 2-5)
Set from the
PU (FR-DU07/
FR-PU04/
FR-PU07).
Change of frequency
with ON/OFF switches
connected to terminals
(multi-speed setting)
Perform frequency
setting by a current
output device
(Connection across
terminals 4-5)
Perform frequency
setting by a voltage
output device
(Connection across
terminals 2-5)
(External) (External) (External)
(PU) (External) (External) (External)
Start command with
on the operation panel (PU)
Step of operation
f
o
p
Step of operation
Installation/mounting
System examination
Wiring of the power
supply and motor
How
to give a start
command?
How to
give a frequency
command?
How to
give a frequency
command?
ON
Time
(S)
(Hz)
Frequency
command
Frequency command
Inverter
output
frequency
: Initial setting
Frequency
{Refer to page 83} {Refer to page 86} {Refer to page 90} {Refer to page 88}
{Refer to page 14}
{Refer to page 10}
Refer to Chapter 4 of
the Instruction Manual (Applied) .
{Refer to page 92} {Refer to page 94} {Refer to page 98} {Refer to page 96}
{Refer to page 63, 66}