Thumbwheel Switch
A7B
Reliable Thumbwheel with
Easy-to-Mount Assembly
s
Dustproof construction ensures highly reliable
performance at low voltage and very small
current even under adverse environmental
conditions
s
Plus (+) and minus () pushbuttons for posi-
tive forward and reverse rotation of each
digital wheel
Ordering Information
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SWITCH UNITS
Part Number
Front mounting solder terminals
Stopper pin provided
Stopper pin not provided
Output Code
Light gray case
Black case
Light gray case
Black case
03 (decimal code)
A7BS-203
A7BS-203-1
06 (binary code)
A7BS-206-S
A7BS-206-S-1
A7BS-206
A7BS-206-1
(binary code w/+, display)
A7BS-206-PM
A7BS-206-PM-1
07 (binary code w/diode provision)
A7BS-207-S
A7BS-207-S-1
A7BS-207
A7BS-207-1
19 (decimal code w/component
adding provision)
A7BS-219
A7BS-219-1
54 (binary code hexadecimal)
A7BS-254
A7BS-254-1
55 (binary code hexadecimal,
w/component adding provision)
A7BS-255
A7BS-255-1
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ACCESSORIES
Part Number
For front mounting type switch assembly terminals
Accessory
Light gray
Black
End Cap
A7B-M
A7B-M-1
Spacer
A7B-P
s
s
A7B-P
s
s
-1
Connector
Solder terminal
A7B-C
A7B-C
PC terminal
A7B-CP
A7B-CP
Note: 1. When placing your order, please specify the model numbers and quantities of required switch units, end caps, and spacers,
respectively. (Note that switch units and accessories are not factory-assembled for shipment.)
2. Type with a suffix -S in their type number are provided with two stopper pins (Type A7BS-S: used in pairs) as standard accessories.
3. Switch case, end cap, and spacer are made of polyacetal resin; however, the window plate is polycarbonate resin.
4. One of the following alphabetic codes must be filled into the boxed part of the model number to specify a legend to be hot
stamped on the required spacer.
5. End caps come as a set -- left and right.
Code
Legend
Code
Legend
Code
Legend
A
Hot stamp
E
g
K
o
C
not required
F
kg
L
PCS
B
SEC
G
mm
Q
x 10 SEC
C
MIN
H
cm
T
0
D
H
J
m
A7B
A7B
2
Characteristics
Switching capacity
1 mA to 0.1 A 50 VAC/28 VDC (resistive load)
Carry current
1 A (max.)
Contact resistance
200 m
max.
Insulation resistance
10 M
min. (at 500 VDC) between nonconnected terminals
1,000 M
min. (at 500 VDC) between each terminal and noncurrent-carrying part
Dielectric strength
600 VAC, 50/60 Hz for 1 minute between nonconnected terminals
1,000 VAC, 50/60 Hz for 1 minute between each terminal and noncurrent-carrying part
Operating force
550 g max.
Vibration
10 to 55 Hz, 1.5 mm double amplitude
Shock
500 m/s
2
(approx. 50 G)
Ambient temperature
Operating
-10
o
to 65
o
C
Storage
-20
o
to 80
o
C
Humidity
45% to 85% RH max.
Service life
Mechanical
100,000 operations (steps) min.
Electrical
50,000 operations (steps) min.
Weight (per unit)
Approx. 4.1 g
Unit: mm (inch)
s
SWITCH UNITS
A7BS-206(-1)
A7BS-207(-1)
Dimensions
A7BS-20
s
s
-S(-1)
Note:
Dimension * is 32.5 (1.28) for the switch with output code "06" [i.e., A7BS-206(-1)], and 43.5 (1.71) for the switch with output
code "07" [i.e., A7BS-207(-1)].
Note:
Data shown are of initial value.
A7B
A7B
3
Panel cutout
No. of
A
B
D
units (n)
(8n + 8)
(8n + 6)
1
16 (0.63)
14 (0.55)
14.4 (0.57)
2
24 (0.94)
22 (0.87)
22.4 (0.88)
3
32 (1.26)
30 (1.18)
30.4 (1.20)
4
40 (1.57)
38 (1.50)
38.4 (1.51)
5
48
0.8 (1.89
0.03)
46
0.8 (1.81
0.03)
46.8 (1.84)
6
56
0.8 (2.20
0.03)
54
0.8 (2.13
0.03)
54.8 (2.16)
7
64
0.8 (2.52
0.03)
62
0.8 (2.44
0.03)
62.8 (2.47)
8
72
0.8 (2.83
0.03)
70
0.8 (2.76
0.03)
70.8 (2.79)
9
80
0.8 (3.15
0.03)
78
0.8 (3.07
0.03)
78.8 (3.10)
10
88
0.8 (3.46
0.03)
86
0.8 (3.39
0.03)
86.8 (3.42)
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END CAPS
A7B-M(-1)
[right]
[left]
Note:
End caps are attached to each end of the switch assembly and used to secure the switch assembly to a mounting panel.
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STOPPER PINS
A7BS-S
Note:
Types with Suffix -S in their type numbers are provided with two stopper pins as standard accessories.
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SPACERS
A7B-P
s
s
(-1)
Note: 1. Unless otherwise specified, a tolerance of
0.4 mm applies to all dimensions.
2. Each model number applies to a single switch unit and not to the switch assembly as shown in the drawings.
A7B
A7B
4
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TERMINALS
A7BS-206(-1)
A7BS-207(-1)
Hints on Correct Use
Refer to HINTS ON CORRECT USE under the General Information section.
Unit: mm (inch)
s
CONNECTORS
A7B-C
A7B-CP
OMRON ELECTRONICS, INC.
OMRON CANADA, INC.
One East Commerce Drive
885 Milner Avenue
Schaumburg, IL 60173
Scarborough, Ontario M1B 5V8
1-800-55-OMRON
416-286-6465
Cat. No. GC SW5
4/98
Specifications subject to change without notice.
Printed in the U.S.A.
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