19
Main circuit terminal specifications
2
WI
R
IN
G
(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.
* For the 01800 or more, the setting range of
Pr. 72 PWM frequency selection
is "0 to 6".
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.
Refer to
page 46
for measures against deteriorated insulation.
(4) Cable size of the control circuit power supply (terminal R1/L11, S1/L21)
· Terminal Screw Size: M4
· Cable size: 0.75mm
2
to 2mm
2
· Tightening torque: 1.5N·m
Pr. 72 PWM frequency selection
Setting
(carrier frequency) *
00023
00038
00052 or
More
2 (2kH) or less
300m
500m
500m
3 (3kHz), 4 (4kHz)
200m
300m
500m
5 (5kHz) to 9 (9kHz)
100m
10 (10kHz) or more
50m
Total wiring length (00038 or more)
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 page 70.
)
· For details of
Pr. 72 PWM frequency selection , refer to page 153
. (When using an optional sine wave filter (MT-BSL/BSC) for the
01800 or more, set "25" in
Pr.72
(2.5kHz)).
500m or less
300m
300m
300m + 300m = 600m
Summary of Contents for F700
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