Additional Information
Procedure to Remove Tight Ferules
Use the following procedure to remove tight ferrules.
1. Press a flat-blade screwdriver at an angle into the release hole.
The appropriate angle of the screwdriver is 10 to 15° to the horizontal.
The tip of the flat-blade screwdriver contacts the ferrule if you press the driver too deep, and
this makes the ferrule difficult to be pulled out. Press the flat-blade screwdriver lightly and
stop there when you feel some resistance.
Flat-blade screwdriver
(1)
1
0 to 15°
2. Leave the flat-blade screwdriver pressed into the release hole and tilt the flat-blade screw-
driver approximately 5° to the direction of the ferrule.
The position of spring in the release hole changes by the tilted flat-blade screwdriver, and
this creates a gap between the ferrule and the spring.
3. Leave the flat-blade screwdriver tilted and pull out the ferrule.
4. Remove the flat-blade screwdriver from the release hole.
Removing a Terminal Block
5 Installation and Wiring
5-51
NX-series NX502 CPU Unit Hardware User's Manual (W629)
5-4 Wiring
5
5-4-8 Wiring to the CPU Unit Terminal Block
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