A7BS2541 - OMRON - Datasheet.Live

CSM_A7BS_A7BL_DS_E_3_2

Thumbwheel Switch

A7BS/A7BL

Wide Range of Locking-type

Models Available

• Character height of 4.8 or 3.2 mm makes for easy-to-

view display.

• Installation is easy with snap-in mounting.

• The series includes a complete range of locking-type

models that prevent accidental operation.

Ordering Information

Switches (Single Switch Units)

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” (+/- alternating display) or “-MP” (-/+ alternating display) after the “206” or “207” in the model number

(e.g., A7BS-206-PM, A7BS-207-PM-1, or A7BS-206-MP). There is no “-MP” type available, however, for A7BS-20@-S models.

*1. For models with PCB terminals, add “-P2” to the model number (e.g., A7BS-207-P2-1).

*2. Models with internal stoppers are also available. Add “-S@@” after the “206” or “207” in the model number and specify the display range in the @@. For example, to

specify the range 0 to 6, add “-S06” to the model number (e.g., A7BS-206-S06-1).

*3. Models with diodes are available. Add “-D” to the model number (e.g., A7BS-207-D or A7BS-207-D-1).

Model A7BS A7BS-20@-S

Classification

(See note 1.)

Snap-in (front mounting) Snap-in (front mounting)

Character height Decimal: 4.8 mm Hexadecimal: 3.2 mm 4.8 mm

Terminals Solder terminals *1

Color Light gray Black Light gray Black

Output code number Model

06 (binary coded decimal) A7BS-206 *2 A7BS-206-1 *2 A7BS-206-S A7BS-206-S-1

07 (binary coded decimal, with component

adding provision) *3 A7BS-207 *2 A7BS-207-1 *2 A7BS-207-S A7BS-207-S-1

19 (decimal code, with component-adding provision)

A7BS-219 A7BS-219-1 --- ---

54 (binary coded hexadecimal) A7BS-254 A7BS-254-1 --- ---

55 (binary coded hexadecimal, with

component-adding provision) *3 A7BS-255 A7BS-255-1 --- ---

Model A7BL

Classification

(See note 1.)

Snap-in (front mounting)

Character height 4.8 mm

Terminals Solder terminals *1

Color Light gray Black

Output code number Model

06 (binary coded decimal) A7BL-206 *2 A7BL-206-1 *2

07 (binary coded decimal, with component-

adding provision) *3 A7BL-207 *2 A7BL-207-1 *2

With external stoppers

Locking type

A7BS/A7BL

Accessories (Order Separately)

Use accessories, such as End Caps, Spacers, and Connectors with the Switch Units.

End Caps, Spare Units, and Connectors

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.

End Caps

End Caps are used on the Switch Units at each end and allow all the

Switch Units to be securely mounted to a panel. They come in pairs,

one for the left and one for the right.

Spacers

•Spacers are used for creating extra space or gaps between the

Switch Units and have the same dimensions as the Switch Units

themselves.

•There are also Spacers with engraved characters or symbols that

can be used for indicating units, such as time and length. (Refer to

the following table.) Consult your OMRON representative for

details.

Specifications

Accessory Color Light gray Black

End Caps (1 pair) A7B-M * A7B-M-1 *

Spacer A7B-P@ (See note.) A7B-P@-1 (See note.)

Connectors Solder terminals A7B-C

PCB terminals A7B-CP

Symbol

A B C D E F G

Stamp

No des-

ignation

SEC MIN H g kg mm

Symbol

H J K L Q T U

Stamp cm m °CPCS

x 10

SEC

0•

Switching capacity (resistive load) 5 to 28 VDC or 50 VAC

1 mA to 0.1 A

Continuous carry current 1 A max.

Contact resistance 300 mΩ max.

Insulation

resistance

Between non-connected

terminals 10 MΩ min. (at 500 VDC)

Between terminal and

non-current carrying part 1,000 MΩ min. (at 500 VDC)

Dielectric

strength

Between non-connected

terminals 600 VAC, 50/60 Hz for 1 min

Between terminal and

non-current carrying part 1,000 VAC, 50/60 Hz for 1 min

Vibration resistance 10 to 55 Hz, 1.5-mm double amplitude

Shock resistance 490 m/s2 min.

Durability Mechanical 100,000 operations min.

Electrical 50,000 operations min.

Ambient temperature Operating: -10°C to 65°C (with no icing)

Storage: -20°C to 80°C

Ambient humidity Operating: 45% to 85%

Max. operating force 5.39 N max.

A7BS/A7BL

Dimensions (Unit: mm)

Switches

P=8±0.2

6.9 0.8

3.8

8±0.1

24 16 2.6 2220.6

24.5

5.5

2.8

22.4+0.4

C+0.3

* If the output code is 06 or 54, the dimension is 32.5;

if the output code is 07 or 55, the dimension is 43.5.

Panel thickness: 1 to 3

Solder terminal

A7BS-2@@(-1)

Solder Terminals

Note: 1. The dimensions above include both End

Caps, and will increase 8 mm for each

Spacer inserted.

2. Unless otherwise specified, a tolerance of

±0.4 mm applies to all dimensions.

The tolerance for multiple connection is

±(number of units x 0.4) mm.

Number of

Switches

(n)

Size A

(n x 8 + 8)

Size B

(n x 8 + 6) Size C

14.4

22.4

30.4

38.4

46.8

54.8

62.8

70.8

78.8

86.8

Panel Cutout

1620.622

2.6

24.5 2.8

5.5

Pin insertion position (2)

Pin insertion position (1)

Ten, 1.2 dia.

Thumbwheel Switches with External Stoppers:

A7BS-20@-S(-1)

•Use A7BS-S Stopper Pins to make dial display restrictions for these Switches.

•Insert the Stopper Pins in the positions required to give the desired display range. For

example, for a display range of 0 to 5, insert a Stopper Pin at position 1 (see following

diagram) to stop the display from going above 5 when the (+) button is pressed, and insert

a Stopper Pin at position 2 to stop the display from going below 0 when the (-) button is

pressed.

Refer to page 7 for details.

Stopper Pins

Note: 1. Two pins constitute one set.

2. The first shipment is free and is attached

to the Switch.

Order the A7BS-S separately if it is

required for maintenance.

2.7

0.4

2.4 dia. 1.2 dia.

* If the output code is 06, the dimension is 32.5;

if the output code is 07, the dimension is 43.5.

8±0.1

15.4 22220.6

24.5

6.1

2.8

P=8±0.2

6.9 0.8

3.6

C+0.3

22.4+0.4

When setting

Panel thickness: 1 to 3

Solder terminal

* If the output code is 06, the dimension is 32.5;

if the output code is 07, the dimension is 43.5.

A7BL-206(-1)

A7BL-207(-1)

Solder Terminals,

Locking Models

Note: 1. The dimensions above include both End

Caps, and will increase 8 mm for each

Spacer inserted.

2. Unless otherwise specified, a tolerance of

±0.4 mm applies to all dimensions.

The tolerance for multiple connection is

±(number of units x 0.4) mm.

Number of

Switches

(n)

Size A

(n x 8 + 8)

Size B

(n x 8 + 6) Size C

14.4

22.4

30.4

38.4

46.8

54.8

62.8

70.8

78.8

86.8

Panel Cutout

A7BS/A7BL

Accessories (Order Separately)

Note: Unless otherwise indicated, dimensional tolerances for dimensions in the models above are ± 0.4 mm.

Connectors (These devices allow Switches to be quickly removed for maintenance and inspection of connectivity, and quickly re-installed.)

Note: Unless otherwise indicated, dimensional tolerances for dimensions in the models above are ± 0.4 mm.

(30)

24.5

3.2 4

2.8

(3.5) 3

(30)

24.5

3.2

42.8

2.4

(3.5)

Left Side Right Side

End Caps for Push-operated Switches

A7B-M(-1) Snap-in Panel Mounting

±0.1

24.52.8

Spacers for Push-operated Switches

A7B-P@(-1) Snap-in Panel Mounting

The @ in the Spacer model number stands for a letter in the range A to U. (Refer to the table under the explanation about Spacers on page 2.)

5 31

7.8

20.5 13.5

P=2.54

3.3 dia.

A7B-C

Solder Terminals

Inserting Connectors

Insert Connectors with the “UP” arrow

pointing up.

Connector

5 31

7.8

17.5 13.5

P = 2.54

0.6 x 0.6

A7B-CP

PCB Terminals

A7BS/A7BL

Output Codes/Terminals

•Switches with output codes 06 or 07 both use binary coded decimal

but Switches with output code 07 have a component-adding

provision. Similarly, Switches with output codes 54 or 55 both use

binary coded hexadecimal but Switches with output code 55 have

a component-adding provision.

•How to Read Output Codes

For example, when the dial position is “3,” the common terminal C

on the Switch is connected to terminals 1 and 2. When the Switch

is inserted into the Connector, the common terminal C becomes

connector terminal 2, and terminals 1 and 2 become connector

terminals 4 and 5 respectively.

Output code

number Terminals Output codes

Component-adding provision

Fourteen,

1-dia. holes

Note: The solid dot ● indicates that the internal switch is ON

(i.e., connected to the common terminal).

Model

Switch Unit or

Connector

Common ter-

minal number

Terminals connected to

common

Switch Unit C 1 2 4 8

06 Connector 2 4 5 6 7

07 Connector 1 4 5 6 7

Dial

1●

2●

3●●

4●

5●●

6●●

7●●●

8●

9●●

Twenty-eight,

1-dia. holes

15 15 2.5

2.5 2.5

P=3.6

1.3

20.6

Nineteen,

1-dia. holes

Note: The solid dot ● indicates that the internal switch is ON

(i.e., connected to the common terminal).

Dial Terminal connected to common

0123456789

0●

1●

2●

3●

4●

5●

6●

7●

8●

9●

A7BS/A7BL

Output code

number Terminals Output codes

Component-adding provision

Fourteen,

1-dia. holes

Note: 1. The solid dot ● indicates that the internal switch is ON

(i.e., connected to the common terminal).

Model

Switch Unit or

Connector

Common ter-

minal number

Terminals connected to

common

Switch Unit C 1248

54 Connector 2 4 5 6 7

55 Connector 1 4 5 6 7

Dial

1●

2●

3●●

4●

5●●

6●●

7●●●

8●

9●●

A●●

B●● ●

C●●

D●●●

E●●●

F●●●●

Twenty-eight,

1-dia. holes

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 on page in the Technical Guide for Thumbwheel Switches.

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.

•A7BS/A7BL Thumbwheel Switches are not drip-proof. Do not use

them in areas subject to water or oil.

•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.

14324

Precautions for Correct Use

(3) Stopper Pin (upper limit) (2) Stopper Pin (lower limit)

(1) Display window

Read and Understand This Catalog

Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have any questions or

comments.

Warranty and Limitations of Liability

WARRANTY

OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or other period if specified)

from date of sale by OMRON.

OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT, MERCHANTABILITY, OR

FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS

DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL OTHER

WARRANTIES, EXPRESS OR IMPLIED.

LIMITATIONS OF LIABILITY

OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR COMMERCIAL LOSS

IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT

LIABILITY.

In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted.

IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING THE PRODUCTS UNLESS

OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY HANDLED, STORED, INSTALLED, AND MAINTAINED AND NOT

SUBJECT TO CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.

Application Considerations

SUITABILITY FOR USE

OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of products in the customer's

application or use of the products.

At the customer's request, OMRON will provide applicable third party certification documents identifying ratings and limitations of use that apply to the

products. This information by itself is not sufficient for a complete determination of the suitability of the products in combination with the end product,

machine, system, or other application or use.

The following are some examples of applications for which particular attention must be given. This is not intended to be an exhaustive list of all possible

uses of the products, nor is it intended to imply that the uses listed may be suitable for the products:



Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or uses not described in this catalog.



Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical equipment, amusement machines, vehicles,

safety equipment, and installations subject to separate industry or government regulations.



Systems, machines, and equipment that could present a risk to life or property.

Please know and observe all prohibitions of use applicable to the products.

NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT ENSURING THAT THE

SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCTS ARE PROPERLY RATED AND

INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.

PROGRAMMABLE PRODUCTS

OMRON shall not be responsible for the user's programming of a programmable product, or any consequence thereof.

Disclaimers

CHANGE IN SPECIFICATIONS

Product specifications and accessories may be changed at any time based on improvements and other reasons.

It is our practice to change model numbers when published ratings or features are changed, or when significant construction changes are made.

However, some specifications of the products may be changed without any notice. When in doubt, special model numbers may be assigned to fix or

establish key specifications for your application on your request. Please consult with your OMRON representative at any time to confirm actual

specifications of purchased products.

DIMENSIONS AND WEIGHTS

Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown.

PERFORMANCE DATA

Performance data given in this catalog is provided as a guide for the user in determining suitability and does not constitute a warranty. It may represent the

result of OMRON’s test conditions, and the users must correlate it to actual application requirements. Actual performance is subject to the OMRON

Warranty and Limitations of Liability.

ERRORS AND OMISSIONS

The information in this document has been carefully checked and is believed to be accurate; however, no responsibility is assumed for clerical,

typographical, or proofreading errors, or omissions.

2012.8

In the interest of product improvement, specifications are subject to change without notice.

OMRON Corporation

Industrial Automation Company

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