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-toview 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) Model A7BS Snap-in (front mounting) A7BS-20@-S Snap-in (front mounting) Classification (See note 1.) With external stoppers Character height Terminals Color Output code number 06 (binary coded decimal) 07 (binary coded decimal, with component adding provision) *3 54 (binary coded hexadecimal) 55 (binary coded hexadecimal, with component-adding provision) *3 Model Decimal: 4.8 mm Hexadecimal: 3.2 mm 4.8 mm Solder terminals *1 Light gray Black Light gray Black Model A7BS-206 *2 A7BS-206-1 *2 A7BS-206-S A7BS-206-S-1 A7BS-207 *2 A7BS-207-1 *2 A7BS-207-S A7BS-207-S-1 A7BS-254 A7BS-254-1 --- --- A7BS-255 A7BS-255-1 --- --- A7BL Snap-in (front mounting) Classification (See note 1.) Locking type Character height Terminals Color Output code number 06 (binary coded decimal) 07 (binary coded decimal, with componentadding provision) *3 4.8 mm Solder terminals *1 Light gray Black Model A7BL-206 *2 A7BL-206-1 *2 A7BL-207 *2 A7BL-207-1 *2 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., A7BS207-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., A7BS207-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 End Caps (1 pair) Spacer Solder terminals Connectors PCB terminals Light gray Black A7B-M A7B-M-1 A7B-P@ (See note.) A7B-P@-1 (See note.) A7B-C 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 Switch Units to be securely mounted to a panel. They come in pairs, one for the left and one for the right. • 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. Symbol A No desStamp ignation B C D E F G SEC MIN H g kg mm Q x 10 SEC T U 0 • Symbol H J K L Stamp cm m °C PCS Specifications Switching capacity (resistive load) Continuous carry current Contact resistance Between non-connected terminals Insulation resistance Between terminal and non-current carrying part Between non-connected terminals Dielectric strength Between terminal and non-current carrying part Vibration resistance Shock resistance Mechanical Durability Electrical Ambient temperature Ambient humidity Max. operating force 3.3 to 28 VDC or 50 VAC 1 mA to 0.1 A 1 A max. 300 mΩ max. 10 MΩ min. (at 500 VDC) 1,000 MΩ min. (at 500 VDC) 600 VAC, 50/60 Hz for 1 min 1,000 VAC, 50/60 Hz for 1 min 10 to 55 Hz, 1.5-mm double amplitude 490 m/s2 min. 100,000 operations min. 50,000 operations min. Operating: -10°C to 65°C (with no icing) Storage: -20°C to 80°C Operating: 45% to 85% 5.39 N max. 2 A7BS/A7BL Dimensions (Unit: mm) Switches A7BS-2@@(-1) Solder Terminals 5.5 A 8±0.1 * 24.5 2.8 24 16 Number of Switches (n) 20.6 22 2.6 Solder terminal Panel thickness: 1 to 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. 3.8 Panel Cutout 22.4+00.4 3 0.8 6.9 B 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. 5.5 2.8 24.5 9 22 20.6 9 1 7 2 6 16 4 14 22 30 38 46 54 62 70 78 86 14.4 22.4 30.4 38.4 46.8 54.8 62.8 70.8 78.8 86.8 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. Stopper Pins 1.2 dia. 2.4 dia. 0.4 2.7 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. 0 8 1 6 3 7 24 3 5 16 24 32 40 48 56 64 72 80 88 Pin insertion position (2) 0 8 1 2 3 4 5 6 7 8 9 10 Size C C+0.3 0 P=8±0.2 * Size A Size B (n x 8 + 8) (n x 8 + 6) 2 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) A7BL-207(-1) Solder Terminals, Locking Models 6.1 8±0.1 A 24 15.4 Number of Switches (n) * 24.5 2.8 20.6 22 2 Solder terminal When setting Panel thickness: 1 to 3 3.6 * If the output code is 06, the dimension is 32.5; if the output code is 07, the dimension is 43.5. Panel Cutout 22.4+0.4 0 3 6.9 0.8 B P=8±0.2 C+00.3 1 2 3 4 5 6 7 8 9 10 Size A Size B (n x 8 + 8) (n x 8 + 6) 16 24 32 40 48 56 64 72 80 88 14 22 30 38 46 54 62 70 78 86 Size C 14.4 22.4 30.4 38.4 46.8 54.8 62.8 70.8 78.8 86.8 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. 3 A7BS/A7BL Accessories (Order Separately) End Caps for Push-operated Switches A7B-M(-1) Snap-in Panel Mounting Left Side Right Side (30) 24 3.2 2.8 4 4 (30) 24 2.8 3.2 24.5 24.5 2.4 22 (3.5) 3 3 (3.5) 3 22 Spacers for Push-operated Switches A7B-P@(-1) Snap-in Panel Mounting 24 2.8 3 22 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 Solder Terminals 37 31 24 21 3.3 dia. 7.8 Inserting Connectors UP 9 20.5 P=2.54 1 3 2 3 7 5 4 Insert Connectors with the “UP” arrow pointing up. 13.5 6 22 A7B-CP PCB Terminals 24 21 7.8 UP 9 17.5 Connector 13.5 0.6 x 0.6 3 P = 2.54 1 3 2 7 5 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 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. Output code number • 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. Terminals Output codes Model 06 Fourteen, 1-dia. holes 06 07 Dial 07 Twenty-eight, 1-dia. holes Switch Unit or Common terConnector minal number Switch Unit C Connector 2 Connector 1 0 1 2 3 4 5 6 7 8 9 Terminals connected to common 1 2 4 8 4 5 6 7 4 5 6 7 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● Note: The solid dot ● indicates that the internal switch is ON (i.e., connected to the common terminal). Component-adding provision 5 A7BS/A7BL Output code number Terminals Output codes Model 54 55 54 Fourteen, 1-dia. holes Dial 55 Twenty-eight, 1-dia. holes Component-adding provision Switch Unit or Common terConnector minal number Switch Unit C Connector 2 Connector 1 0 1 2 3 4 5 6 7 8 9 A B C D E F Terminals connected to common 1 2 4 8 4 5 6 7 4 5 6 7 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● 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. 2. 3. 4. 1 3 2 4 A7BS-206 (Switch Unit): 2 pieces A7BS-207 (Switch Unit): 2 pieces A7B-PA (Spacer): 1 piece 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 • 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. 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: (3) Stopper Pin (upper limit) (2) Stopper Pin (lower limit) (1) Display window 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. • To separate the Switches, use a flat-blade screwdriver as shown in the following figure to release the hooks on the top and bottom and then separate the Switches. Be careful not to bend the hooks. 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. 7 Terms and Conditions Agreement 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. Warranties. (a) Exclusive Warranty. Omron’s exclusive warranty is that the Products will be free from defects in materials and workmanship for a period of twelve months from the date of sale by Omron (or such other period expressed in writing by Omron). 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NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY OR IN LARGE QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCT(S) IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM. Programmable Products. Omron Companies shall not be responsible for the user’s programming of a programmable Product, or any consequence thereof. Performance Data. Data presented in Omron Company websites, catalogs and other materials 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 user must correlate it to actual application requirements. Actual performance is subject to the Omron’s Warranty and Limitations of Liability. 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 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.