2-26
Reactor Effects
Harmonics are effectively suppressed when the DC reactor is used with the AC reactor as shown in the
following table.
Harmonics
Harmonic generation rate (%)
suppression
method
5th har-
monic
7th har-
monic
11th har-
monic
13th har-
monic
17th har-
monic
19th har-
monic
23rd har-
monic
25th har-
monic
No reactor 65 41 8.5 7.7 4.3 3.1 2.6 1.8
AC reactor 38 14.5 7.4 3.4 3.2 1.9 1.7 1.3
DC reactor 30 13 8.4 5 4.7 3.2 3.0 2.2
DC and AC
reactors
28 9.1 7.2 4.1 3.2 2.4 1.6 1.4
2-2-5 Wiring Control Circuit Terminals
A control signal line must be 50 m maximum and separated from power lines.
The frequency reference must be input into the Inverter through shielded, twisted-pair
wires.
H Wiring of Control I/O Terminals
Wire each control I/O terminal under the following conditions.
D Wires and Tightening Torque
Multi-function Contact Output (MA, MB, and MC)
Terminal
screw size
Tightening
torque NSm
Wire Wire size Recommend
ed wire size
Cable
M3 0.5 to 0.6
Single wire 0.5 to 1.25
(20 to 16)
0.75 (18) Cable with polyethylene
sheath
Stranded
wire
0.5 to 1.25
(20 to 16)
Sequential Input (S1 through S5 and SC) and Analog Monitor Output (AM or AC)
Terminal
screw size
Tightening
torque NSm
Wire Wire size Recommend
ed wire size
Cable
M2 0.22 to 0.25
Single wire 0.5 to 1.25
(20 to 16)
0.75 (18) Cable with polyethylene
sheath
Stranded
wire
0.5 to 0.75
(20 to 18)
Frequency Reference Input (FR, FS, and FC)
Terminal
screw size
Tightening
torque NSm
Wire Wire size Recommend
ed ire size
Cable
M2 0.22 to 0.25
Single wire 0.5 to 1.25
(20 to 16)
0.75 (18) Special cable with
polyethylene sheath and
Stranded
wire
0.5 to 0.75
(20 to 18)
shield for measurement use
Design Chapter 2
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