4-41
4 System Design
G5 Series AC Servo Drives With Built-in EtherCAT Communications, Linear Motor Type
4-3 Wiring Conforming to EMC Directives
4
4-3-2 Selecting Connection Component
Note These values vary greatly depending on the installation conditions of the motor power cable and the
measurement conditions. Use the values for reference only.
• Use surge absorbers to absorb lightning surge voltage and abnormal voltage from power supply input
lines.
• When selecting surge absorbers, take into account the varistor voltage, the surge immunity and the
energy tolerated dose.
• For 200-VAC systems, use surge absorbers with a varistor voltage of 620 V.
The surge absorbers shown in the following table are recommended.
Note 1 Refer to the manufacturers' catalog for operating details.
2 The surge immunity is for a standard impulse current of 8/20 s. If pulses are wide, either decrease the
current or change to a larger-capacity surge absorber.
R88D-KN06F-ECT-L 3-phase 400 V 2.28 mA 1.8 mA
R88D-KN10F-ECT-L 3-phase 400 V 2.20 mA
R88D-KN15F-ECT-L 3-phase 400 V 2.55 mA 2.03 mA
R88D-KN20F-ECT-L 3-phase 400 V 2.92 mA 2.4 mA
R88D-KN30F-ECT-L 3-phase 400 V 3.92 mA 3.23 mA
R88D-KN50F-ECT-L 3-phase 400 V 3.54 mA 2.9 mA
R88D-KN75F-ECT-L 3-phase 400 V 6.70 mA 3.73 mA
R88D-KN150F-ECT-L 3-phase 400 V 10.40 mA 2.73 mA
Surge Absorber
Manufacturer Model Surge immunity Type Comment
Okaya Electric
Industries Co., Ltd.
R·A·V-781BWZ-4 700 V 20% 2500 A Block Single-phase
100/200 VAC
Okaya Electric
Industries Co., Ltd.
R·A·V-781BXZ-4 700 V 20% 2500 A 3-phase 200 VAC
Okaya Electric
Industries Co., Ltd.
R·A·V-801BXZ-4 800V 20% 2500 A 3-phase 400 VAC
Servo Drive model Input power supply
Leakage current
(Cable: 3 m)
Increase per 10 m
of cable