Thumbwheel Switch A7BS/A7BL CSM_A7BS/A7BL_DS_E_6_2 Wide Range of Locking-type Models Available •Character height of 4.8 or 3.2 mm makes for easy-to- view display. (cid:129)Installation is easy with snap-in mounting. (cid:129)The series includes a complete range of locking-type models that prevent accidental operation. Ordering Information Switches (Single Switch Units) Model A7BS A7BS-20@-S Snap-in (front mounting) Snap-in (front mounting) Classification (See note 1.) With external stoppers 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 A7BS-207 *2 A7BS-207-1 *2 A7BS-207-S A7BS-207-S-1 adding provision) *3 54 (binary coded hexadecimal) A7BS-254 A7BS-254-1 --- --- 55 (binary coded hexadecimal, with A7BS-255 A7BS-255-1 --- --- component-adding provision) *3 Model A7BL Snap-in (front mounting) Classification (See note 1.) Locking type 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- A7BL-207 *2 A7BL-207-1 *2 adding provision) *3 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” or “207” in the model number (e.g., A7BS-206-PM or A7BS-207-PM-1). *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). For structural reasons, models with stoppers cannot be manufactured for the A7BS-254 and A7BS-255. *3.Models with diodes are available. Add “-D” to the model number (e.g., A7BS- 207-D or A7BS-207-D-1). 1

A7BS/A7BL Accessories (Order Separately) Use accessories, such as End Caps, Spacers, and Connectors with the Switch Units. End Caps, Spare Units, and Connectors Accessory Color Light gray Black End Caps (1 pair) A7B-M A7B-M-1 Spacer A7B-P@ (See note.) A7B-P@-1 (See note.) Solder terminals A7B-C Connectors PCB terminals A7B-CP 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.) End Caps Spacers End Caps are used on the Switch Units at each end and allow all the •Spacers are used for creating extra space or gaps between the Switch Units to be securely mounted to a panel. They come in pairs, Switch Units and have the same dimensions as the Switch Units one for the left and one for the right. 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. Symbol A B C D E F G No des- Stamp SEC MIN H g kg mm ignation Symbol H J K L Q T U Stamp cm m °C PCS x 10 0 (cid:129) SEC Specifications 3.3 to 28 VDC or 50 VAC Switching capacity (resistive load) 1 mA to 0.1 A Continuous carry current 1 A max. Contact resistance 300 mΩ max. Between non-connected 10 MΩ min. (at 500 VDC) Insulation terminals resistance Between terminal and 1,000 MΩ min. (at 500 VDC) non-current carrying part Between non-connected 600 VAC, 50/60 Hz for 1 min Dielectric terminals strength Between terminal and 1,000 VAC, 50/60 Hz for 1 min non-current carrying part Vibration resistance 10 to 55 Hz, 1.5-mm double amplitude Shock resistance 490 m/s2 min. Mechanical 100,000 operations min. Durability Electrical 50,000 operations min. Operating: -10°C to 65°C (with no icing) Ambient temperature Storage: -20°C to 80°C Ambient humidity Operating: 45% to 85% Max. operating force 5.39 N max. 2

A7BS/A7BL Dimensions (Unit: mm) Switches A7BS-2@@(-1) 5.5 * Number of Solder Terminals 8±0.1 A 2.8 24.5 Switches (nS xiz 8e +A 8) (nS xiz 8e +B 6) Size C (n) 1 16 14 14.4 2 24 22 22.4 24 16 2.6 20.6 22 3 32 30 30.4 4 40 38 38.4 5 48 46 46.8 Solder terminal 6 56 54 54.8 7 64 62 62.8 Panel thickness: 1 to 3 8 72 70 70.8 3.8 * If the output code is 06 or 54, the dimension is 32.5; 9 80 78 78.8 if the output code is 07 or 55, the dimension is 43.5. 10 88 86 86.8 Note:1.The dimensions above include both End Panel Cutout Caps, and will increase 8 mm for each Spacer inserted. 2.Unless otherwise specified, a tolerance of 22.4+00.4 ±0.4 mm applies to all dimensions. The tolerance for multiple connection is ±(number of units x 0.4) mm. 3 0.8 6.9 BP=8±0.2 C+00.3 Thumbwheel Switches with External Stoppers: A7BS-20@-S(-1) •Use A7BS-S Stopper Pins to make dial display restrictions for these Switches. Stopper Pins •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 2.4 dia. 1.2 dia. diagram) to stop the display from going above 5 when the (+) button is pressed, and insert 0.4 2.7 a Stopper Pin at position 2 to stop the display from going below 0 when the (-) button is Note:1.Two pins constitute one set. pressed. 2.The first shipment is free and is attached Refer to page 7 for details. to the Switch. Order the A7BS-S separately if it is * 5.5 required for maintenance. 2.8 24.5 Pin insertion position (2) 9 0 9 0 8 1 8 1 22 20.6 7 2 16 24 7 2 6 3 6 3 5 4 2.6 5 4 Pin insertion position (1) Ten, 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. A7BL-206(-1) Number of A7BL-207(-1) 8±0.1 A 6.21.8 24.5* Swi(tnc)hes (nS xiz 8e +A 8) (nS xiz 8e +B 6) Size C Solder Terminals, 1 16 14 14.4 Locking Models 2 24 22 22.4 3 32 30 30.4 24 15.4 2 20.6 22 4 40 38 38.4 5 48 46 46.8 Solder terminal 6 56 54 54.8 When setting 7 64 62 62.8 Panel thickness: 1 to 3 8 72 70 70.8 3.6 * If the output code is 06, the dimension is 32.5; 9 80 78 78.8 if the output code is 07, the dimension is 43.5. 10 88 86 86.8 Note:1.The dimensions above include both End Panel Cutout Caps, and will increase 8 mm for each Spacer inserted. 2.Unless otherwise specified, a tolerance of 2 2.4+00.4 ±0.4 mm applies to all dimensions. The tolerance for multiple connection is 3 6.9 0B.8P=8±0.2 C+00.3 ±(number of units x 0.4) mm. 3

A7BS/A7BL Accessories (Order Separately) End Caps for Push-operated Switches A7B-M(-1) Snap-in Panel Mounting Left Side (30) Right Side (30) 24 24 3.2 2.8 4 4 2.8 3.2 24.5 24.5 2.4 22 (3.5) 3 3 (3.5) 22 3 Spacers for Push-operated Switches A7B-P@(-1) Snap-in Panel Mounting 24 22 3 2.8 24.5 8±0.1 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.) 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.) A7B-C 37 Solder Terminals 31 24 3.3 dia. 21 7.8 Inserting Connectors Insert Connectors with the “UP” arrow 20.5 9 UP 13.5 pointing up. P=2.54 3 1 3 5 7 2 4 6 22 A7B-CP 24 PCB Terminals 21 7.8 Connector 17.5 9 UP 13.5 0.6 x 0.6 3 P = 2.54 1 3 5 7 2 4 6 22 Note:Unless otherwise indicated, dimensional tolerances for dimensions in the models above are ± 0.4 mm. 4

A7BS/A7BL Output Codes/Terminals •Switches with output codes 06 or 07 both use binary coded decimal •How to Read Output Codes but Switches with output code 07 have a component-adding For example, when the dial position is “3,” the common terminal C provision. Similarly, Switches with output codes 54 or 55 both use on the Switch is connected to terminals 1 and 2. When the Switch binary coded hexadecimal but Switches with output code 55 have is inserted into the Connector, the common terminal C becomes a component-adding provision. connector terminal 2, and terminals 1 and 2 become connector terminals 4 and 5 respectively. Output code Terminals Output codes number Switch Unit or Common ter- Terminals connected to Model Connector minal number common 06 Switch Unit C 1 2 4 8 06 Connector 2 4 5 6 7 Fourteen, 1-dia. holes 07 Connector 1 4 5 6 7 0 1 ● 2 ● 3 ● ● 4 ● Dial 5 ● ● 6 ● ● 7 ● ● ● 8 ● 07 9 ● ● Note:The solid dot ● indicates that the internal switch is ON Twenty-eight, (i.e., connected to the common terminal). 1-dia. holes Component-adding provision 5

A7BS/A7BL Output code Terminals Output codes number Switch Unit or Common ter- Terminals connected to Model Connector minal number common Switch Unit C 1 2 4 8 54 Connector 2 4 5 6 7 54 55 Connector 1 4 5 6 7 0 Fourteen, 1 ● 1-dia. holes 2 ● 3 ● ● 4 ● 5 ● ● 6 ● ● 7 ● ● ● Dial 8 ● 9 ● ● A ● ● B ● ● ● C ● ● 55 D ● ● ● E ● ● ● Twenty-eight, 1-dia. holes F ● ● ● ● Component-adding provision Note:1.The solid dot ● indicates that the internal switch is ON (i.e., connected to the common terminal). 6

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. 4 1 3 2 4 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. Precautions for Correct Use Handling Models with External Stoppers (A7BS-20@-S) •The molded components of the Switch use polyacetal resin and With the A7BS-20@-S, any range can be set externally using the ABS resin. It is recommended that alcohol is used to wipe off dirt Stopper Pin. Insert the Stopper Pin using the following procedure: and smudges from the molded components. Take care to prevent the alcohol from getting inside. (2) Stopper Pin (lower limit) •A7BS/A7BL Thumbwheel Switches are not drip-proof. Do not use (3) Stopper Pin (upper limit) them in areas subject to water or oil. •Do not allow solder flux or alcohol to enter the Switch. (1) Display window Setting Numbers Locking Type 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 •Set with the setting button by raising it. number to be defined. •Return the button to its original position after setting. It is then 3. Next, inset the Stopper Pin in the hole locked to prevent rotation, and the set numbers will not change past the upper limit (“7”) for the number accidentally. to be defined. (The Stopper Pins then •To separate the Switches, use a flat-blade screwdriver as shown in surround the exact range to be the following figure to release the hooks on the top and bottom and defined.) then separate the Switches. Be careful not to bend the hooks. 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. 7

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It is our practice to change part numbers when published ratings or features are changed, or when significant construction changes are made. However, some specifications of the Product may be changed without any notice. When in doubt, special part numbers may be assigned to fix or establish key specifications for your application. Please consult with your Omron’s representative at any time to confirm actual specifications of purchased Product. Errors and Omissions. Information presented by Omron Companies has been checked and is believed to be accurate; however, no responsibility is assumed for clerical, typographical or proofreading errors or omissions. 2016.4 In the interest of product improvement, specifications are subject to change without notice. OMRON Corporation Industrial Automation Company http://www.ia.omron.com/ (c)Copyright OMRON Corporation 2016 All Right Reserved.