csm_a7bs_a7bl_ds_e_2_1 1 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 un its 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) 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 co mponent-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) 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
2 a7bs/a7bl accessories (order separately) use accessories, such as e nd 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 spa cers.) * 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 engrav ed 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 m ? max. insulation resistance between non-connected terminals 10 m ? min. (at 500 vdc) between terminal and non-current carrying part 1,000 m ? 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/s 2 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.
3 a7bs/a7bl dimensions (unit: mm) switches p=8 0.2 6.9 0.8 b 3 3.8 8 0.1 24 16 2.6 22 20.6 24.5 5.5 2.8 a 22.4 + 0.4 0 c + 0.3 0 * 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 1 2 3 4 5 6 7 8 9 10 16 24 32 40 48 56 64 72 80 88 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 panel cutout 1 6 0 5 9 4 8 3 2 7 1 6 0 5 9 4 8 3 16 20.6 22 2.6 24 24.5 2.8 5.5 32.5 2 7 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 di splay restrictions for these switches. ? insert the stopper pins in the positions r equired 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 disp lay 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. 8 0.1 24 a 15.4 2 22 20.6 24.5 6.1 2.8 p=8 0.2 6.9 0.8 b 3 3.6 c + 0.3 0 22.4 +0.4 0 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 1 2 3 4 5 6 7 8 9 10 16 24 32 40 48 56 64 72 80 88 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 panel cutout
4 a7bs/a7bl accessories (order separately) note: unless otherwise indicated, dimensional tole rances 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 tole rances for dimensions in the models above are 0.4 mm. (30) 24 22 24.5 3.2 4 2.8 (3.5) 3 (30) 24 22 24.5 3.2 4 2.8 2.4 (3.5) 3 3 left side right side end caps for push -operated switches a7b-m(-1) snap-in panel mounting 3 8 0.1 24 24.5 2.8 22 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 3 1 6 7 4 2 up 21 7.8 20.5 13.5 9 p=2.54 22 3 24 31 37 3.3 dia. a7b-c solder terminals inserting connectors insert connectors with the ?up? arrow pointing up. connector 5 3 1 6 7 4 2 up 7.8 17.5 13.5 9 22 3 21 24 p = 2.54 0.6 x 0.6 a7b-cp pcb terminals
5 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 swit ches 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 term inals 1 and 2 become connector terminals 4 and 5 respectively. output code number terminals output codes 06 07 component-adding provision 19 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 0 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 8 6 4 2 nineteen, 1-dia. holes 8 6 4 2 9 7 5 3 1 0 note: the solid dot indicates that the internal switch is on (i.e., connected to the common terminal). dial terminal connected to common 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9
6 a7bs/a7bl output code number terminals output codes 54 55 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 0 1 2 3 4 5 6 7 8 9 a b c d e f twenty-eight, 1-dia. holes
7 a7bs/a7bl ordering procedure place orders as shown in the ex ample 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. 1 4324 precautions for correct use (3) stopper pin (upper limit) (2) stopper pin (lower limit) (1) display window
r e a d a n d u n d e r s t a n d t h i s c a t a l o g p l e a s e r e a d a n d u n d e r s t a n d t h i s c a t a l o g b e f o r e p u r c h a s i n g t h e p r o d u c t s . p l e a s e c o n s u l t y o u r o m r o n r e p r e s e n t a t i v e i f y o u h a v e a n y q u e s t i o n s o r c o m m e n t s . w a r r a n t y a n d l i m i t a t i o n s o f l i a b i l i t y w a r r a n t y o m r o n ' s e x c l u s i v e w a r r a n t y i s t h a t t h e p r o d u c t s a r e f r e e f r o m d e f e c t s i n m a t e r i a l s a n d w o r k m a n s h i p f o r a p e r i o d o f o n e y e a r ( o r o t h e r p e r i o d i f s p e c i f i e d ) f r o m d a t e o f s a l e b y o m r o n . o m r o n m a k e s n o w a r r a n t y o r r e p r e s e n t a t i o n , e x p r e s s o r i m p l i e d , r e g a r d i n g n o n - i n f r i n g e m e n t , m e r c h a n t a b i l i t y , o r f i t n e s s f o r p a r t i c u l a r p u r p o s e o f t h e p r o d u c t s . a n y b u y e r o r u s e r a c k n o w l e d g e s t h a t t h e b u y e r o r u s e r a l o n e h a s d e t e r m i n e d t h a t t h e p r o d u c t s w i l l s u i t a b l y m e e t t h e r e q u i r e m e n t s o f t h e i r i n t e n d e d u s e . o m r o n d i s c l a i m s a l l o t h e r w a r r a n t i e s , e x p r e s s o r i m p l i e d . l i m i t a t i o n s o f l i a b i l i t y o m r o n s h a l l n o t b e r e s p o n s i b l e f o r s p e c i a l , i n d i r e c t , o r c o n s e q u e n t i a l d a m a g e s , l o s s o f p r o f i t s o r c o m m e r c i a l l o s s i n a n y w a y c o n n e c t e d w i t h t h e p r o d u c t s , w h e t h e r s u c h c l a i m i s b a s e d o n c o n t r a c t , w a r r a n t y , n e g l i g e n c e , o r s t r i c t l i a b i l i t y . i n n o e v e n t s h a l l t h e r e s p o n s i b i l i t y o f o m r o n f o r a n y a c t e x c e e d t h e i n d i v i d u a l p r i c e o f t h e p r o d u c t o n w h i c h l i a b i l i t y i s a s s e r t e d . i n n o e v e n t s h a l l o m r o n b e r e s p o n s i b l e f o r w a r r a n t y , r e p a i r , o r o t h e r c l a i m s r e g a r d i n g t h e p r o d u c t s u n l e s s o m r o n ' s a n a l y s i s c o n f i r m s t h a t t h e p r o d u c t s w e r e p r o p e r l y h a n d l e d , s t o r e d , i n s t a l l e d , a n d m a i n t a i n e d a n d n o t s u b j e c t t o c o n t a m i n a t i o n , a b u s e , m i s u s e , o r i n a p p r o p r i a t e m o d i f i c a t i o n o r r e p a i r . a p p l i c a t i o n c o n s i d e r a t i o n s s u i t a b i l i t y f o r u s e o m r o n s h a l l n o t b e r e s p o n s i b l e f o r c o n f o r m i t y w i t h a n y s t a n d a r d s , c o d e s , o r r e g u l a t i o n s t h a t a p p l y t o t h e c o m b i n a t i o n o f p r o d u c t s i n t h e c u s t o m e r ' s a p p l i c a t i o n o r u s e o f t h e p r o d u c t s . a t t h e c u s t o m e r ' s r e q u e s t , o m r o n w i l l p r o v i d e a p p l i c a b l e t h i r d p a r t y c e r t i f i c a t i o n d o c u m e n t s i d e n t i f y i n g r a t i n g s a n d l i m i t a t i o n s o f u s e t h a t a p p l y t o t h e p r o d u c t s . t h i s i n f o r m a t i o n b y i t s e l f i s n o t s u f f i c i e n t f o r a c o m p l e t e d e t e r m i n a t i o n o f t h e s u i t a b i l i t y o f t h e p r o d u c t s i n c o m b i n a t i o n w i t h t h e e n d p r o d u c t , machin e , s y s t e m , o r o t h e r a p p l i c a t i o n o r u s e . t h e f o l l o w i n g a r e s o m e e x a m p l e s o f a p p l i c a t i o n s f o r w h i c h p a r t i c u l a r a t t e n t i o n m u s t b e g i v e n . t h i s i s n o t i n t e n d e d t o b e a n e x h a u s t i v e l i s t o f a l l p o s s i b l e u s e s o f t h e p r o d u c t s , n o r i s i t i n t e n d e d t o i m p l y t h a t t h e u s e s l i s t e d m a y b e s u i t a b l e f o r t h e p r o d u c t s : o u t d o o r u s e , u s e s i n v o l v i n g p o t e n t i a l c h e m i c a l c o n t a m i n a t i o n o r e l e c t r i c a l i n t e r f e r e n c e , o r c o n d i t i o n s o r u s e s n o t d e s c r i b e d i n t h i s c a t a l o g . n u c l e a r e n e r g y c o n t r o l s y s t e m s , c o m b u s t i o n s y s t e m s , r a i l r o a d s y s t e m s , a v i a t i o n s y s t e m s , m e d i c a l e q u i p m e n t , a m u s e m e n t m a c h i n e s , v e h i c l e s , s a f e t y e q u i p m e n t , a n d i n s t a l l a t i o n s s u b j e c t t o s e p a r a t e i n d u s t r y o r g o v e r n m e n t r e g u l a t i o n s . s y s t e m s , m a c h i n e s , a n d e q u i p m e n t t h a t c o u l d p r e s e n t a r i s k t o l i f e o r p r o p e r t y . p l e a s e k n o w a n d o b s e r v e a l l p r o h i b i t i o n s o f u s e a p p l i c a b l e t o t h e p r o d u c t s . n e v e r u s e t h e p r o d u c t s f o r a n a p p l i c a t i o n i n v o l v i n g s e r i o u s r i s k t o l i f e o r p r o p e r t y w i t h o u t e n s u r i n g t h a t t h e s y s t e m a s a w h o l e h a s b e e n d e s i g n e d t o a d d r e s s t h e r i s k s , a n d t h a t t h e o m r o n p r o d u c t s a r e p r o p e r l y r a t e d a n d i n s t a l l e d f o r t h e i n t e n d e d u s e w i t h i n t h e o v e r a l l e q u i p m e n t o r s y s t e m . p r o g r a m m a b l e p r o d u c t s o m r o n s h a l l n o t b e r e s p o n s i b l e f o r t h e u s e r ' s p r o g r a m m i n g o f a p r o g r a m m a b l e p r o d u c t , o r a n y c o n s e q u e n c e t h e r e o f . d i s c l a i m e r s c h a n g e i n s p e c i f i c a t i o n s p r o d u c t s p e c i f i c a t i o n s a n d a c c e s s o r i e s m a y b e c h a n g e d a t a n y t i m e b a s e d o n i m p r o v e m e n t s a n d o t h e r r e a s o n s . i t i s o u r p r a c t i c e t o c h a n g e m o d e l n u m b e r s w h e n p u b l i s h e d r a t i n g s o r f e a t u r e s a r e c h a n g e d , o r w h e n s i g n i f i c a n t c o n s t r u c t i o n c h a n g e s a r e m a d e . h o w e v e r , s o m e s p e c i f i c a t i o n s o f t h e p r o d u c t s m a y b e c h a n g e d w i t h o u t a n y n o t i c e . w h e n i n d o u b t , s p e c i a l m o d e l n u m b e r s m a y b e a s s i g n e d t o f i x o r e s t a b l i s h k e y s p e c i f i c a t i o n s f o r y o u r a p p l i c a t i o n o n y o u r r e q u e s t . p l e a s e c o n s u l t w i t h y o u r o m r o n r e p r e s e n t a t i v e a t a n y t i m e t o c o n f i r m a c t u a l s p e c i f i c a t i o n s o f p u r c h a s e d p r o d u c t s . d i m e n s i o n s a n d w e i g h t s d i m e n s i o n s a n d w e i g h t s a r e n o m i n a l a n d a r e n o t t o b e u s e d f o r m a n u f a c t u r i n g p u r p o s e s , e v e n w h e n t o l e r a n c e s a r e s h o w n . p e r f o r m a n c e d a t a perfor m a n c e d a t a g i v e n i n t h i s c a t a l o g i s p r o v i d e d a s a g u i d e f o r t h e u s e r i n d e t e r m i n i n g s u i t a b i l i t y a n d d o e s n o t c o n s t i t u t e a w a r r a n t y . i t m a y r e p r e s e n t t h e r e s u l t o f o m r o n ? s t e s t c o n d i t i o n s , a n d t h e u s e r s m u s t c o r r e l a t e i t t o a c t u a l a p p l i c a t i o n r e q u i r e m e n t s . a c t u a l p e r f o r m a n c e i s s u b j e c t t o t h e o m r o n w a r r a n t y a n d l i m i t a t i o n s o f l i a b i l i t y . e r r o r s a n d o m i s s i o n s t h e i n f o r m a t i o n i n t h i s d o c u m e n t h a s b e e n c a r e f u l l y c h e c k e d a n d i s b e l i e v e d t o b e a c c u r a t e ; h o w e v e r , n o r e s p o n s i b i l i t y i s a s s u m e d f o r c l e r i c a l , t y p o g r a p h i c a l , o r p r o o f r e a d i n g e r r o r s , o r o m i s s i o n s . 2008 . 12 i n t h e i n t e r e s t o f p r o d u c t i m p r o v e m e n t , s p e c i f i c a t i o n s a r e s u b j e c t t o c h a n g e w i t h o u t n o t i c e . o m r o n c o r p o r a t i o n i n d u s t r i a l a u t o m a t i o n c o m p a n y h t t p : / / w w w . i a . o m r o n . c o m / ( c ) c o p y r i g h t o m r o n c o r p o r a t i o n 2 0 0 8 a l l r i g h t r e s e r v e d .
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