Omron OMNUC FND Series User Manual page 103

Design and Installation
j Selecting Components
This section describes standards to be considered when selecting components to be connected to
reduce noise. Select components after reviewing characteristics such as capacities, performance, and
application ranges. Recommended components are listed below for reference. For further details, con-
sult the manufacturer.
No-fuse Breakers (MCCB)
When selecting no-fuse breakers, take into consideration the maximum output current and the inrush
current.
The momentary maximum output for a servo system is approximately three times that of the rated out-
put, and a maximum output of three seconds can be executed. 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. Refer to the table in 2-2-3 W iring T erminal Blocks for
the power supply input currents for each motor. Be sure to add the current consumption for the number
of shafts, other controllers, etc., to make the selection.
The Position Driver inrush current flows at a maximum of 50 A for 20 ms when 200 V is input. With low-
speed no-fuse breakers, a inrush current 7 to 8 times the rated current flows for 0.1 second. When mak-
ing the selection, take into consideration the entire inrush current for the system.
Surge Absorbers
Use surge absorbers to absorb surges from power supply input lines due to lightning, abnormal volt-
ages, etc. When selecting surge absorbers, take into account the varistor voltage, the amount of surge
immunity, and the amount of energy resistance. For 200-VAC systems, use a varistor voltage of 470 V.
The surge absorbers shown in the following table are recommended.
Maker Model
Okaya y
R.A.V-781BYZ-2
El Electric Ind. i I d
R.A.V-781BXZ-4
Note 1. Refer to manufacturer's 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
Note
current or change to a larger-capacity surge absorber.
Ferrite Cores
Maker Model
TDK ZCAT305-1330
Power Supply Input Noise Filters
Maker
Soshin Electric Co., Ltd. ,
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Max. limit
voltage
783 V
783 V
Motor capacity
30 to 500 W
750 to 1,000 W
1.5 to 2 kW
Surge Type
immunity
Block
1,000 A
1,000 A
Model
NF2010A-PI
NF2015A-PI
HF3010A-PI
Chapter 2
Remarks
For power supply line
For power supply line
ground
Remarks
Single-phase, 10 A
Single-phase, 15 A
Three-phase, 10 A
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