Omron NV Series Setup Manual page 58

Part Names and Functions
Note
38
(1) Precaution when Using the NV3W(-V1), NV4W, or NV3Q
The touch switches use analog resistive membranes.
Do not touch more than 1 touch switch at the same time.
If you touch two switches at the same time and there is a switch centered
between them, the switch between them will operation, possibly causing
damage to facilities or accidents.
If switches A and B are
If switches A and B are
touched at the same time,
touched at the same time,
this switch will operate.
this switch will operate.
A
B
(2) Set the operating mode switch on the NV3W-V1/NV4W as shown below.
Correct Method
Back case of
the NV
Operating mode switch
If you attempt to set the switch by using the back case of the NV as a ful-
crum, the operating mode switch may break.
If switches A and B are
touched at the same time,
this switch will operate.
A
A B
B
Wrong Method
Section 2-1