Mitsubishi Electric FR-A760-00017-NA Installation Manuallines page 11

WIRING
(3) 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.
(The wiring length should be 100m (328.08feet) maximum for vector control.)
· When fast response current limit is enabled, the wiring length should be within the value in the table
below (*Pr. 156 = 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30).
· ND/HD Rated
Pr. 72 PWM frequency selection setting
(carrier frequency)
2 (2kHz) or less
3 to 15 (3kHz to 14.5kHz)
· LD/SLD Rated
Pr. 72 PWM frequency
selection setting
(carrier frequency)
2 (2kHz) or less
3 to 15 (3kHz to 14.5kHz)
· When fast response current limit is disabled, the wiring length should be within the value in the table
below (*Pr. 156 = 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29).
FR-A760-00017
100m
(328.08feet)
CAUTION
· Especially for long-distance wiring, the inverter may be affected by a charging current caused by the stray capacitances of the
wiring, leading to a malfunction of the overcurrent protective function or fast response current limit function or a malfunction or
fault of the equipment connected on the inverter output side. If fast-response current limit function malfunctions, disable this
function. (For Pr. 156 Stall prevention operation selection, refer to
· For details of Pr. 72 PWM frequency selection , refer to
(4) Cable size of the control circuit power supply (terminal R1/L11, S1/L21)
· Terminal screw size: M4
2
· Cable size: 0.75mm
· Tightening torque: 1.5N·m
9
FR-A760-00017
100m
(328.08feet)
100m
(328.08feet)
FR-A760- FR-A760-
00017 00040
100m
(328.08feet) (656.16feet)
100m
(328.08feet) (328.08feet)
FR-A760-00040 FR-A760-00061
300m 500m
(984.25feet) (1640.42feet)
2
to 2mm
FR-A760-00040
300m
(984.25feet)
200m
(656.16feet)
FR-A760-
00061
200m 300m
(984.25feet)
100m 200m
(656.16feet)
FR-A760-00120
or more
500m
(1640.42feet)
Instruction Manual (applied).)
Instruction Manual (applied).
FR-A760-00120
FR-A760-00061
300m
(984.25feet)
300m
(984.25feet)
FR-A760-00220
FR-A760-00120
500m
(1640.42feet)
500m
ND, HD
(1640.42feet)
400m
LD, SLD
(1312.33feet)
or more
500m
(1640.42feet)
500m
(1640.42feet)
or more
500m
(1640.42feet)
500m
(1640.42feet)