A7BS/A7BL

Ordering Procedure

Place orders as shown in the example below, specifying the model

and number. Standard products are not factory-assembled for

shipment. Contact your OMRON representative for details on

ordering factory-assembled sets.

1. A7BS-206 (Switch Unit): 2 pieces

2. A7BS-207 (Switch Unit): 2 pieces

3. A7B-PA (Spacer): 1 piece

4. A7B-M (End Caps): 1 pair

Safety Precautions

Refer to Precautions for Correct Use

Handling

• The molded components of the Switch use polyacetal resin and

ABS 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.

• A7B Thumbwheel Switches are not drip-proof. Do not use them in

areas subject to water or oil exposure.

• Do not allow solder flux or alcohol to enter the Switch.

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.

Models with External Stoppers (A7BS-20

@-S)

With the A7BS-20

@-S, any range can be set externally using the

Stopper 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 the

numbers displayed in the display window. (In this example, 8 and

9 are outside of this range.)

2. First, insert the Stopper Pin in the hole

in front of the lower limit ("0") for the

number to be defined.

3. Next, inset the Stopper Pin in the hole

past the upper limit ("7") for the number

to be defined. (The Stopper Pins then

surround the exact range to be

defined.)

4. Confirm that the (+) push-button can no

longer be pushed after reaching the

upper limit of ("7").

5. Confirm that the (-) push-button can no longer be pushed after

reaching the lower limit of ("0"). This completes the setting.

1

43

2

4

Precautions for Correct Use

(3) Stopper Pin (upper limit)

(2) Stopper Pin (lower limit)

(1) Display window

http://www.ia.omron.com/

7

(c)Copyright OMRON Corporation 2007 All Rights Reserved.