Omron OMNUC G Series User Manual

4-35
4-3 Wiring Conforming to EMC Directives
System Design
4
 Surge Absorbers
 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 allowable surge
current and the energy.
 For 200-VAC systems, use surge absorbers with a varistor voltage of 620 V.
 The surge absorbers shown in the following table are recommended.
Note1. Refer to the manufacturers' documentation for operating details.
Note2. 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.
Dimensions
Equalizing Circuits
Manufacturer Model Surge immunity Type Remarks
Okaya Electric
Industries Co., Ltd.
R·A·V-781BWZ-4 700 V 20% 2,500 A
Block
Single-phase
100/200 VAC
Okaya Electric
Industries Co., Ltd.
R·A·V-781BXZ-4 700 V 20% 2,500 A
Three-phase
200 VAC
123
28
4.5
28.5 11
5.5
41
200
4.2 dia.
Three-phase BXZ Series
21
28
4.5
28.5 11
5.5
41
200
4.2 dia.
Single-phase BWZ Series
Three-phase BXZ Series
Single-phase BWZ Series

Omron OMNUC G Series Specifications

General

Brand	Omron
Model	OMNUC G Series
Category	Servo Drives
Language	English