Mitsubishi Electric fr-e700 series, Instruction Manual

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Wiring Main circuit connection
FR-E700 SC EC/ENE 3 - 13
Total wiring length
The maximum possible length of the motor cables depends on the capacity of the inverter and the se-
lected carrier frequency.
The lengths in the following table are for unshielded cables. When shielded cables are use divide the
values listed in the table by 2.
200 V class
400 V class
Pr. 72 "PWM frequency
selection" Setting
(carrier frequency)
FR-E720S-
008SC 015SC 030SC 050SC 080SC 110SC 175SC
1 (1 kHz) 200 m 200 m 300 m 500 m 500 m 500 m 500 m
2 to 15 (2 kHz to 14.5 kHz) 30 m 100 m 20 0m 300 m 500 m 500 m 500 m
Tab. 3-7: Total wiring length
Pr. 72 "PWM frequency
selection" Setting
(carrier frequency)
FR-E740-
016SC 026SC 040SC 060SC 095SC
1 (1 kHz) 200 m 200 m 300 m 500 m 500 m
2 to 15 (2 kHz to 14.5 kHz) 30 m 100 m 200 m 300 m 500 m
Tab. 3-8: Total wiring length
Fig. 3-6:
Remember that in the table above the total wiring
length is what is being referred to. In parallel
connections of several motors every motor wire
must be counted. In this example, for the frequency
inverter with an output capacity of 3.7 kW the
permissible wiring length is exceeded by the two
parallel motor lead wires.
I001904E
500 m
300 m
300 m
300 m + 300 m = 600 m