3-26
Maker Model Rated current Coil voltage
OMRON
J7L-09 11 A
200 V AC
J7L-32 26 A
J7L-40 35 A
J7L-50 50 A
J7L-85 80 A
J7L-12
Two poles 12 A
24 V DC
Three poles 12 A
J7L-32
Two poles 25 A
Three poles 25 A
J7L-40
Two poles 35 A
Three poles 35 A
J7L-50
Two poles 45 A
Three poles 50 A
J7L-85
Two poles 65 A
Three poles 80 A
D Leakage Breakers
Select leakage breakers designed for inverters.
Since switching takes place inside the Servo Drivers, harmonic current leaks from the armature of the
motor. With inverter leakage breakers, harmonic current is not detected, preventing the breaker from
operating due to leakage current.
When selecting leakage breakers, remember to also add the leakage current from devices other than
the Servomotor, such as machines using a switching power supply, noise filters, inverters, and so on.
For details on leakage breakers, refer to the manufacturer’s catalog.
The following table shows the Servomotor leakage current for each Servo Driver model.
Driver Leakage current (resistor/capacitor measurement)
(commercial power supply frequency range)
R88D-WTA3HL to -WT02HL 16 mA
R88D-WTA3H to -WT04H 8 mA
R88D-WT05H to -WT10H 3 mA
R88D-WT15H 5 mA
R88D-WT20H/-WT30H 6 mA
R88D-WT50H 9 mA
R88D-WT60H/-WT75H 21 mA
R88D-WT150H 57 mA
Note 1. The above leakage current is for cases where Servomotor power line length is less than 10
meters. (It varies depending on the power line length and the insulation.)
Note 2. The above leakage current is for normal temperature and humidity. (It varies depending on
the temperature and humidity.)
System Design and Installation
Chapter 3
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