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4 System Design
G5-series Linear Motors/Servo Drives With Built-in EtherCAT Communications
4-4 Noise Reduction
4
4-4-2 Selecting Connection Components
• 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 µs. If pulses are wide, either decrease the
current or change to a larger-capacity surge absorber.
z External Dimensions
z Equalizing Circuits
Surge Absorber
Manufacturer Model Surge immunity Type Comment
Okaya
Electric
Industries
Co., Ltd.
R·A·V-781BWZ-4 700 V ± 20% 2,500 A Block Single-phase
100/200 VAC
R·A·V-781BXZ-4 700 V ± 20% 2,500 A 3-phase 200 VAC
R·A·V-801BXZ-4 800 V ± 20% 2,500 A 3-phase 400 VAC
21
28
4.5
28.5 11
5.5
Ø
4.2
41
200
For single-phase (BWZ series)
123
28
4.5
28.5 11
5.5
Ø
4.2
41
200
For 3-phase (BXZ series)
For single-phase (BWZ series)
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