Omron A3C Series Mounting And Wiring Instructions page 13

Application
Mounting and Replacing the Pushbutton
(1) Mounting Direction for the Pushbutton/Display and Lamp
Lighted Pushbutton Switch
• Insert the Lamp (incandescent lamp or LED lamp) into the
Pushbutton so that the lamp guide fits into the wider gap between
the projections on the Pushbutton.
Projections
LED/lamp guide
Indicator
• With Indicators, the Lamp is inserted facing the opposite direction
(i.e., at 180°) to that for Lighted Pushbutton Switches.
Groove of the Display
Projection of the LED/lamp
Note: Push the projections on the Lamp into the grooves on the Pushbutton/
Display.
The Lamp for Lighted Pushbutton Switches moves, but the Lamp for
Indicators is fixed.
(2) Mounting Direction for the Pushbutton/Display and Switch
• Insert the Pushbutton/Display into the Switch so that the lamp guide
is aligned with the non-projecting part of the Switch.
• Apply a pressure between 9.8 and 24.5 N.
Note: 1. The mounting direction for Indicators is 180
Pushbutton Switches. Be sure to insert the Legend Plate and other
parts with the correct orientation.
2. If the terminals of the Lamp become bent, it may be impossible to fit
them into the lamp terminal holes. Ensure that the terminals are
straight when they are inserted.
3. Take particular care about the mounting direction with the round
models (A3CT).
(3) Removing the Pushbutton/Display
Hold the recessed portions on the cap of the Pushbutton and pull.
Recess
Note: Do not use tools such as pliers to remove the Pushbutton as this may
damage the cap.
LED/lamp guide
LED/lamp guide
Projection
of the Switch
°
to that for Lighted
Panel Mounting
• Insert the Switch from the front of the panel. Mount the mounting
nut from the terminal end of the Switch and tighten it.
• There are projections on the terminal end of the Switch which may,
depending on the orientation, block the nut. In this case, turn the nut
until it is possible to mount it. Tighten the nut to a torque between
0.20 and 0.39 N·m.
• If soldering is used, mount the mounting nut first. Lead wires and
mounds of solder may make it impossible to mount the nut after
soldering.
Panel
Socket Mounting
• After securing the Switch to the panel using the mounting nut, insert
the Socket into the Switch.
• Align the positioning holes of the Socket with the projections of the
Switch before inserting the Socket.
Panel
Mounting the Insulation Cover
• After securing the Switch to the panel using the mounting nut, pass
the lead wires through the holes in the Insulation Cover and then
perform wiring. Hold the Insulation Cover so that the cylindrical hole
is facing the Switch, and insert the lead wires from the end with the
barriers.
• After wiring is completed, mount the Insulation Cover by pushing it
into the Switch.
Insulation Cover attached to Switch
A3C
Mounting nut
Projection
of the Switch
Positioning
hole of the Socket
Switch terminal
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