Omron SMARTSTEP Junior R7D-ZP, Руководство пользователя

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4-2 Wiring
4-2-5 Conforming to EMC Directives
No-fuse Breakers (NFB)
•
When selecting a no-fuse breaker, consider the maximum input current and the inrush
current.
Maximum Input Current:
•
The Servo Driver’s maximum momentary output is approximately three times the rated
output, and can be output for up to three seconds. Therefore, select no-fuse breakers
with an operating time of at least five seconds at 300% of the rated maximum output.
General-purpose and low-speed no-fuse breakers are generally suitable.
•
The table in 4-2-4 Wiring the Main Circuit and Servomotor Connections shows the
rated power supply input current for each Servomotor. Select a no-fuse-breaker with a
rated current greater than the total effective load current (when multiple Servomotors
are used).
•
Add the current consumption of other controllers, and any other components, when
selecting the NFB.
Inrush Current:
•
The following table lists the Servo Drivers’ inrush currents.
•
With low-speed no-fuse breakers, an inrush current 10 times the rated current flows for
0.02 second.
•
When there is a simultaneous inrush for multiple Servo Drivers, select a
no-fuse-breaker with a 20-ms allowable current greater than the total inrush current for
those Servo Drivers, shown in the following table.
Inrush current (A
0-p
)
Servo Driver model
Main circuit power supply
R7D-ZP01H/-ZP02H/-ZP04H 30
R7D-ZP08H 60
Surge Absorbers
•
Use surge absorbers to absorb surges from power supply input lines due to lightning,
abnormal voltages, etc.
•
When selecting surge absorbers, take into account the varistor voltage, the amount of
surge immunity, and the amount of energy resistance.
•
For 200-V AC systems, use surge absorbers with a varistor voltage of 470 V.
•
The surge absorbers shown in the following table are recommended.
Maker Model
Max. limit
voltage
Surge
immunity
Type Remarks
R
⋅
A
⋅
V-781BYZ-2 783 V 2,500 A
Between power
supply lines
Okaya
Electric
Industries
Co., Ltd.
R
⋅
A
⋅
V-781BWZ-4 783 V 2,500 A
Block
Between power
supply line grounds
Note 1. Refer to the manufacturers’ documentation 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.
4-15