Instruction manual

7
Main circuit terminal specifications
(2) Total wiring length
The overall wiring length for connection of a single motor or multiple motors should be within the value in the table below.
200V class
400V class
When driving a 400V class motor by the inverter, surge voltages attributable to the wiring constants may occur at the
motor terminals, deteriorating the insulation of the motor. Take the following measures (1) or (2) in this case.
(1) Use a "400V class inverter-driven insulation-enhanced motor" and set frequency in Pr. 72 PWM frequency selection
according to wiring length
(2) Connect the surge voltage suppression filter (FR-ASF-H/FR-BMF-H) on the inverter output side.
Pr. 72 PWM frequency selection
Setting
(carrier frequency)
008 015 030 050 080 110
175
or More
1 (1kHz) or less
200m
(656.19
feet)
200m
(656.19
feet)
300m
(984.25
feet)
500m
(1640.42
feet)
500m
(1640.42
feet)
500m
(1640.42
feet)
500m
(1640.42
feet)
2 to15
(2kHz to 14.5kHz)
30m
(98.42
feet)
100m
(328.08
feet)
200m
(656.19
feet)
300m
(984.25
feet)
500m
(1640.42
feet)
500m
(1640.42
feet)
500m
(1640.42
feet)
Pr. 72 PWM frequency selection
Setting
(carrier frequency)
016 026 040 060
095
or More
1 (1kHz) or less
200m
(656.19
feet)
200m
(656.19
feet)
300m
(984.25
feet)
500m
(1640.42
feet)
500m
(1640.42
feet)
2 to15
(2kHz to 14.5kHz)
30m
(98.42
feet)
100m
(328.08
feet)
200m
(656.19
feet)
300m
(984.25
feet)
500m
(1640.42
feet)
Total wiring length (FR-E720-175 or more, FR-E740-095 or more)
Wiring Length
50m(164.04feet) or
less
50m(164.04feet) to
100m(328.08feet)
Exceeding
100m(323.08feet)
Carrier frequency 14.5kHz or less 8kHz or less 2kHz or less
500m
(1640.42feet)
or less
300m
(984.25feet)
300m
(984.25feet)
300m(984.25feet) + 300m(984.25feet)
= 600m(1968.50feet)
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