Omron OMNUC G5 Series User Manual

4-28
4-3 Wiring Conforming to EMC Directives
OMNUC G5-series AC Servomotors and Servo Drives User’s Manual (with Built-in EtherCAT Communications)
4
System Design
Leakage Breaker
 Select leakage breakers designed for protection against ground faults.
 Because switching takes place inside the Servo Drives, high-frequency current leaks from the SW
elements of the Servo Drive, the armature of the motor, and the cables.
High-frequency, surge-resistant leakage breakers, because they do not detect high-frequency
current, can prevent operation with high-frequency leakage current.
When using a general leakage breaker, use 3 times the total of the leakage current given in the
following table as a reference value.
 When selecting leakage breakers, remember to add the leakage current from devices other than
the motor, such as devices using a switching power supply, noise filters, inverters, and so on.
To prevent malfunction due to inrush current, we recommend using a leakage breaker of 10 times
the total of all current values.
 The leakage breaker is activated at 50% of the rated current. Select a leakage breaker with
enough capacity.
 For details on leakage breakers selection method, refer to the manufacturer's catalog.
Surge Absorber
 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.
Note 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.
Servo Drive model
Inrush current (Ao-p)
Main circuit power
supply
Control circuit pow-
er supply
R88D-KN06F-ECT-R 28 48
R88D-KN10F-ECT-R 28 48
R88D-KN15F-ECT-R 28 48
R88D-KN20F-ECT-R 32 48
R88D-KN30F-ECT-R 32 48
R88D-KN50F-ECT-R 32 48
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

Omron OMNUC G5 Series Specifications

General

Brand	Omron
Model	OMNUC G5 Series
Category	Servo Drives
Language	English