Omron OMNUC W Series User Manual page 197

System Design and Installation
• Be careful not to let gaps be opened in the control box while tightening down screws.
Case
Control box
Door (interior view)
H Selecting Components
This section explains the criteria for selecting the connection components required for
improving noise resistance. These criteria include capacity performance, applicable
range, and so on. For more details, contact the manufacturers directly.
D No-fuse Breakers (NFB)
When selecting no-fuse breakers, take into consideration the maximum output current and the inrush
current.
Maximum input current:
The momentary maximum output for a Servo Driver 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. The table in 3-2-3 Terminal Block Wiring shows the
rated power supply input currents for each Servomotor. Select a no-fuse-breaker with a rated current
greater than the total effective load current (when multiple Servomotors are used). When making the
selection, add in the current consumption of other controllers, and so on.
Servo Driver inrush current:
With low-speed no-fuse breakers, an inrush current 10 times the rated current flows for 0.02 second.
AUDIN - 7 bis rue de Tinqueux - 51100 Reims - France - Tel : 03.26.04.20.21 - Fax : 03.26.04.28.20 - Web : http: www.audin.fr - Email : info@audin.fr
Door
Oil-proof packing
Oil-proof packing
Conductive packing
Conductive packing
Cross-sectional view of A- -B
Chapter 3
Door
3-31