4-2 Wiring
4-2-5 Conforming to EMC Directives
Leakage Breakers
•
Use leakage breakers designed for motors.
•
Since switching takes place inside the Servo Drivers, harmonic current leaks from the
armature of the motor. With leakage breakers designed for motors, harmonic current is
not detected, preventing the breaker from operating due to leakage current.
•
When selecting leakage breakers, remember to add the leakage current in devices
besides the Servomotor that use the switching power supply, such as noise filters and
inverters.
•
For details on leakage breakers, refer to the manufacturer’s catalog.
•
The following table shows the Servomotor leakage current for each Servo Driver
model.
Servo Driver model
Driver Leakage current (resistor/capacitor measurement) in the
commercial power supply frequency range
R7D-ZP01H/-ZP02H/-ZP04H
3 mA max.
R7D-ZP08H
5 mA max.
Note 1. The leakage current shown above is for Servomotor power cables less than 5 meters
long.
(The leakage current depends on the power cable length and the insulation.)
2. The leakage current shown above is for normal temperature and humidity. (The leakage
current depends on the temperature and humidity.)
The following table shows the recommended leakage breakers. (Conform to UL/CSA and
CE standards.)
Maker
Model number
Rated current
Sensitive current
EG33CM/30-30MA·CE
30 A
30 mA
Fuji Electric
Corp.
EG33CM/30-100MA·CE
30 A
100 mA
Leakage Breaker Connection Example
AC power
supply side
No-fuse
breaker
Surge
absorber
Leakage
breaker
Noise filter
Servo Driver side
NF
Leakage Breaker Connection Example
Radio Noise Filters
Use a radio noise filter to reduce the Servo Driver’s PWM noise. The following table
shows some available radio noise filters.
Maker
Model number
RN603620M
FDK Corporation
RN80UD
FT-3KMF6045GB
FT-3KMS10085GB
Hitachi Metals
FT-1KMF6045GB
4-18
Summary of Contents for SMARTSTEP Junior R7D-ZP
Page 3: ...2 ...
Page 18: ...Section 1 Configuration Features and System ...
Page 25: ...1 5 Applicable Standards 1 5 2 UL and cUL Standards 1 8 ...
Page 26: ...Section 2 Dimensions Standard Models and ...
Page 36: ...Section 3 Specifications ...
Page 62: ...Section 4 System Design ...
Page 86: ...Section 5 Operation ...
Page 96: ...Section 6 Troubleshooting ...
Page 109: ...6 5 Periodic Maintenance 6 5 3 Replacing the Cooling Fan 6 14 ...
Page 110: ...Appendix ...