4 System Design
4-26
G5 Series AC Servo Drives With Built-in EtherCAT Communications, Linear Motor Type
*1 Use the same wire size for B1 and B2.
Model (R88D-)
KN20H-
ECT-L
KN30H-
ECT-L
KN50H-
ECT-L
KN75H-
ECT-L
KN150H-
ECT-L
Item Unit
Power supply capacity kVA 3.3 4.5 7.5 11.0 22.0
Main circuit
power supply
input (L1 and
L3, or L1, L2
and L3)
Rated current A 11.8 15.1 21.6 32.0 58.0
Wire size
AWG14
AWG12 AWG10 AWG6
Screw size M5 M6
Tightening torque N·m 2.0 2.0 to 2.4 2.2 to 2.5
Control circuit
power supply
input (L1C and
L2C)
Wire size AWG18
Screw size M5 M4
Tightening torque N·m 2.0 1.3 to 1.5 0.7 to 0.8
Motor
connection
terminals (U,
V, W, and FG)
*2
Rated current A 13.4 18.6 33.0 44.0 66.7
Wire size AWG12 AWG6 AWG4
Screw size M5 M6
Tightening torque N·m 2.0 2.0 to 2.4 2.2 to 2.5
Maximum wiring
length
m20
Frame ground
(FG)
Wire size AWG14 AWG12 AWG6 AWG4
Screw size M4 M5 M6
Tightening torque N·m 1.2 2.0 1.4 to 1.6 2.4 to 2.8
Maximum wiring
length
m1
Dynamic brake
resister control
terminals
Wire size AWG18
Screw size M5 M4
Tightening torque N·m 1.3 to 1.5 0.7 to 0.8
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