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What is A7CN-L?

This electronic component, produced by the manufacturer "Omron", performs the same function as "Thumbwheel Switch".


A7CN-L Datasheet PDF - Omron

Part Number A7CN-L
Description Thumbwheel Switch
Manufacturers Omron 
Logo Omron Logo 


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Thumbwheel Switch
A7CN/A7CN-L
A Brand New Lineup of A7C
Series Compact Thumbwheel
Switches
• The series includes a complete range of locking-type
models that prevent accidental operation.
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CSM_A7CN_A7CN-L_DS_E_2_1
Ordering Information
Switches (Single Switch Units)
Model
Screw mounting (back mounting)
Classification
(See note 1.)
A7CN
Snap-in (front mounting)
Output code Terminals
number
Color
06 (binary coded decimal)
Model
Light gray
---
PCB terminals
Black
Light gray
A7CN-106-1
A7CN-206
A7CN-L
Snap-in (front mounting)
Black
A7CN-206-1
Classification
(See note 1.)
Locking type
Output code Terminals
number
Color
Light gray
PCB terminals
Black
06 (binary coded decimal)
A7CN-L206
A7CN-L206-1
Note: 1. The classification diagrams show 4 Switch Units combined with End Caps to create 4-digit displays.
2. The model numbers given above are for Switch Units.
3. Models with +, - displays can also be produced. Add “-PM” after the “206” in the model number (e.g., A7CN-206-PM or A7CN-206-PM-1).
Accessories (Order Separately)
Use accessories, such as End Caps and Spacers, with the Switch Units.
Classification
Accessory
End Caps (1 pair)
Spacer
Color
Screw mounting
(back mounting)
Black
A7CN-1M-1 *
A7CN-1P@-1 (See note.)
Snap-in (front mounting)
Light gray
A7CN-2M *
A7CN-2P@ (See note.)
Black
A7CN-2M-1 *
A7CN-2P@-1 (See note.)
Note: The @ in the Spacer model number stands for a letter in the range A to U. (Refer to the table in the following explanation about Spacers.)
* The minimum order is for 10 End Caps.
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A7CN-L equivalent
Safety Precautions
A7CN/A7CN-L
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Refer to Precautions for Correct Use on in the Technical Guide for Thumbwheel Switches.
Precautions for Correct Use
Environment
Do not use where gases are generated (ammonia, chlorine, sulfur
dioxide).
Although Switches are of nearly dust-proof construction, they are
not drip-proof, therefore do not use in areas subject to water or oil
exposure and do not operate with wet or oily hands.
Provide additional dust-proofing measures, such as using a dust-
proof cover, when using in sand-exposed areas.
Handling
The A7CN cannot be connected to the A7C.
The molded components of the Switch use polyacetal resin and
polycarbonate resin. It is recommended that alcohol is used to wipe
off dirt and smudges from the molded components. Take care to
prevent the alcohol from getting inside.
Do not use thinner or other solutions which might damage the resin.
When changing settings, do not touch the operating buttons if your
fingers are wet or there is oil or any other foreign substance on your
fingers.
Do not drop the individual Switches. Doing so may damage the
resin catch (for connecting) on the side of the Switch.
When separating Switches, use a screwdriver as shown in the
figure below; disconnect them by releasing the top and bottom
hooks. Be careful not to bend the hooks.
When connecting Switches, fit the mating parts together.
Do not push the (+) and (-) operating push-buttons at the same
time.
Screw-mounting Models
Tighten mounting screws to a torque between 0.2 to 0.24 N·m, using
M2.6 screws. Use plain washers or spring washers together with the
screws.
Setting Numbers
Locking Type
Set with the setting button by raising it.
Return the button to its original position
after setting. It is then locked to prevent
rotation, and the set numbers will not
change accidentally.
Do not
push here
Soldering
Note the following points when soldering
printed circuit boards:
The terminal insertion holes on the PCB must be at least 1 mm in
diameter.
Automatic Soldering
Do not use dip cleaning. Doing so may result in flux penetration of
the Switch interior, causing contact and rotational defects. Clean
the flux as shown in Figure 1, tilting the Switch 80° or less and using
a brush to apply the solvent only to the back of the board. It may
also be cleaned by dipping only the back of the board into the
solvent and then using a brush to clean.
Dip Soldering
When applying flux solvent, the dipping time is a maximum of 2
seconds. As shown in Figure 2, avoid flooding the top surface of the
printed circuit board with flux. Using a brush to apply flux further
reduces the danger of flux penetration. When cleaning flux with a
brush, tilt the Switch 80° or less, as shown in Figure 1, in order to
prevent flux from flowing onto the switch mounting surface. Clean
flux as described above under Automatic Soldering.
Figure 1
Figure 2
Back surface
of board
Top surface
of board
Models with PCB Terminals
Do not use excessive force in handling the Switches. In particular,
take care to avoid dropping them because the terminals might bend
or break.
80° or less
Wipe away flux
with a brush.
Using a Soldering Iron
Use a 30-W soldering iron at a temperature of 350°C for a
maximum of 3 seconds, and flush as described above.
Do not apply force to the terminals during soldering and for 3
minutes after soldering is completed. Doing so may result in
conduction or operation failure.
Ensure that soldering flux and alcohol do not penetrate into the
Switch interior
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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for A7CN-L electronic component.


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