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4 System Design
G5-series Linear Motors/Servo Drives With Built-in EtherCAT Communications
4-4 N
o
ise Re
duc
tion
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
2
1
28
4.5
28.5
11
5.5
Ø
4.2
41
200
For single-phase (BWZ series)
1 2 3
28
4.5
28.5
11
5.5
Ø
4.2
41
200
For 3-phase (BXZ series)
For single-phase (BWZ series)
For 3-phase (BXZ series)