A7MD-106-P-09-D Omron, A7MD-106-P-09-D Datasheet - Page 24

• Manufacturer Part Number: A7MD-106-P-09-D
• Description: Thumbwheel Switch W/Blck Diode
• Manufacturer: Omron

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Precautions
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. (The A7MD has
a dust-proof construction on contact parts, but consider your instal-
lation location carefully. The A7MA is not of dust-proof construc-
tion.)
Provide additional dust-proofing measure when using in sand-ex-
posed areas.
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 accidental-
ly.
Pen-push Type
To set, press the setting button with a ball-point pen or other pointed
object. However, avoid using pencils or mechanical pencils as bro-
ken lead or lead dust may enter and damage the Switch.
Handling
Use alcohol to wipe off dirt and smudges from the molded-plastic
cases. Take care to prevent the alcohol from getting inside.
Do not use thinner or other solutions which might damage the plas-
tic.
When connecting Switches, fit the mating parts together.
When separating Switches, use a screwdriver as shown in the fig-
ure below; disconnect them by releasing the top and bottom hooks.
Do not push the (+) and (–) operating push-buttons at the same time
with undue force.
Terminals for PCB Models
When using terminals for printed circuit boards, make the terminal
insertion holes in the back board (mother board) 1 mm or larger in
diameter.
Do not use excessive force in handling terminals for printed circuit
boards. In particular, take care to avoid dropping them as the termi-
nals might bend or break.
Reference: Terminals can withstand a force of 0.8 g for 1 minute or
The A7MD accommodates only printed circuit boards. When pulling
out the operating surface from the back of the panel, refer to the fig-
ures for panel mounting dimensions. However, it cannot be fas-
tened alone to the panel.
Connectors
Insert Connectors while keeping the arrow pointing up (refer to page
31).
Connector insertion load is about 1.5 kg for each A7B-C.
Setting the Stopper (A7BS-20j-S)
With the A7BS-20j-S, any range can be set outside with the Stop-
per Pin. Insert the Stopper Pin using the following procedure:
Example: To Display the Range 0 to 7
1. Any number within the range of (0 to 7) can be chosen to limit
2. First, insert the Stopper Pin in the hole in front of the lower limit
3. Next, inset the Stopper Pin in the hole past the upper limit (“7”)
4. Confirm that the (+) push-button can no longer be pushed
the numbers displayed in the display window. (In this
example, 8 and 9 are outside of this range.)
(“0”) for the number to be defined.
for the number to be defined. (The Stopper Pins then
surround the exact range to be defined.)
after reaching the upper limit of (“7”).
(3) Stopper Pin (upper limit)
more, and survive bending of 20° without breaking after
returning to original position.
(2) Stopper Pin (lower limit)
(1) Display window
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