• All-in-one design means fewer parts are required. This product
delivers high reliability at a low cost.
• Uses long-lasting resin springs to achieve a long mechanical
durability expectancy of 30,000 operations.
• Models with stoppers for restricting the setting range are available.
• The series includes a complete range of pen-push models that
prevent accidental operation.
Ordering Information
Switches (Single Switch Units)
Model
A7D
Screw mounting (back mounting)
Snap-in (front mounting)
A7DP
Snap-in (front mounting)
Classification
(See note 1.)
Terminals
Color
06 (binary coded decimal)
Output code
number
Light gray
A7D-106
Black
A7D-106-1
PCB terminals
Light gray
Black
A7D-206
A7D-206-1
Light gray
A7DP-206
Black
A7DP-206-1
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 1 Switch Unit.
3. Models with stoppers are also available. Add “-S@@” after the “106” or “206” 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., A7D-106-S06-1).
4. Models with +, - displays are also available. Add “-PM” after the “106” or “206” in the model number (e.g., A7D-106-PM or A7D-106-PM-1).
Accessories (Order Separately)
Use accessories, such as End Caps and Spacers, with the Switch Units.
Classification
Accessory
Color
End Caps (1 pair)
Spacer
Screw mounting (back mounting)
Light gray
Black
A7D-1M
A7D-1M-1
A7D-1P@
A7D-1P@-1
(See note.)
(See note.)
Snap-in (front mounting)
Light gray
Black
A7D-2M
A7D-2M-1
A7D-2P@
A7D-2P@-1
(See note.)
(See note.)
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
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.
Symbol
Stamp
Symbol
Stamp
A
No desig-
nation
H
cm
B
SEC
J
m
C
MIN
K
°C
D
H
L
PCS
E
g
Q
x 10
SEC
F
kg
T
0
G
mm
U
•
1
A7D/A7DP
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 30 VDC
1 mA to 0.1 A
100 mA
200 mΩ max.
10 MΩ min. (at 250 VDC)
100 MΩ min. (at 500 VDC)
250 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
500 m/s
2
min.
30,000 operations min.
20,000 operations min.
Operating: –10°C to 70°C (with no icing)
Storage: –20°C to 80°C
Operating: 45% to 85%
3.43 N max.
Dimensions
Switches
A7D-106(-1)
PCB Terminals
Number of
Switches (n)
1.5
3.7
1.92
2.8
16 14
±
0.1
10
2.2
8
4
2
1
C
(Unit: mm)
C
B
A
5.08
±
0.1
2
1.6
17
Size A
(n x 5.1 + 3)
8.1
13.2
18.3
23.4
28.5
33.5
38.6
43.7
48.8
53.9
Size B
Size C
(n x 5.1 + 8.3) (n x 5.1 + 13.3)
13.4
18.5
23.6
28.7
33.8
38.9
44.0
49.1
54.2
59.3
18.4
23.5
28.6
33.7
38.8
43.9
49.0
54.1
59.2
64.3
Size D
8.4
13.5
18.6
23.7
28.8
33.9
39.0
44.1
49.2
54.3
1
2
3
4
1.4 14
±
0.15
4.2
P=2.54
5
6
7
8
9
10
1.5
0.8
PCB terminal
Panel thickness: 2
Panel Cutout
14.2
+0.4
0
1.85
P=5.08
±
0.3
1.5
(2.2)
D
+0.3
0
B
Two, M2.6 or
2.8 mm holes
Note: Common terminal C is at the bottom when the Switch Unit is viewed
from the front.
Note: 1. The dimensions above include both End Caps, and
will increase 5.08 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.
A7D-206(-1)
PCB Terminals
1.5
(2.5)
A
5.08
±
0.1
17.5
1.5
3.7
Number of
Switches (n)
3.7
1.92
8
4
2
1
C
Size A
(n x 5.1 + 5)
10.1
15.2
20.3
25.4
30.5
35.5
40.6
45.7
50.8
55.9
Size B
(n x 5.1 + 3)
8.1
13.2
18.3
23.4
28.5
33.5
38.6
43.7
48.8
53.9
Size C
(n x 5.1 + 3.9)
9
14.1
19.2
24.3
29.4
34.5
39.6
44.7
49.8
54.9
1
2
3
4
14
±
0.15
1.4
P=2.54
16
10
2.2
5
6
7
8
9
10
1.5
0.8
PCB terminal
Panel thickness: 1 to 2
Panel Cutout
14.2
+
0.4
0
(1.5)
(2.2)
C
+0.3
0
P=5.08
±
0.3
B
Note: Common terminal C is at the bottom when the Switch Unit is viewed
from the front.
Note: 1. The dimensions above include both End Caps, and
will increase 5.08 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.
2
A7D/A7DP
A7DP-206(-1)
PCB Terminals,
Pen-push Model
(2.5)
1.5
A
5.08
±
0.1
1.9
17.5
1.5
Number of
Switches (n)
3.7
1.92
8
4
2
1
C
Size A
(n x 5.1 + 5)
10.1
15.2
20.3
25.4
30.5
35.5
40.6
45.7
50.8
55.9
Size B
(n x 5.1 + 3)
8.1
13.2
18.3
23.4
28.5
33.5
38.6
43.7
48.8
53.9
Size C
(n x 5.1 + 3.9)
9
14.1
19.2
24.3
29.4
34.5
39.6
44.7
49.8
54.9
1
2
3
14
±
0.15
1.4
P= 2.54
16
10
2.2
4
5
6
7
8
9
10
0.8
PCB terminal
Panel thickness: 1 to 2
Panel Cutout
14.2
+0.4
0
(1.5)
(2.2)
P= 5.08
±
0.3
B
C
Note: Common terminal C is at the bottom when the Switch Unit is viewed
from the front.
Note: 1. The dimensions above include both End Caps, and
will increase 5.08 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.
Accessories (Order Separately)
End Caps for Push-operated Switches
A7D-1M(-1) Screw Mounting (Back Mounting)
Left Side
16
2
14
6.5
1.5
0.8
End Caps for Push-operated Switches
A7D-2M(-1) Snap-in Mounting (Front Mounting)
Left Side
Right Side
3.3
16
2
5
1.5
2.5
2.5
16
5
16
14
Right Side
6.5
1.5
15.5
15.5
17.5 16
16 17.5
1.5
0.7
1.5
0.8
1.4
1.5
0.8
1.5
1.5
14
2.6
0.7
1.5
0.8
1.4
0.7
1.5
2.6
14
1.5
Spacers for Push-operated Switches
A7D-1P@(-1) Screw Mounting (Back Mounting)
17.5
5.08
±
0.1
0.8
2
1.6
Spacers for Push-operated Switches
A7D-2P@(-1) Snap-in Mounting (Front Mounting)
17.5
5.08
±
0.1
0.8
1.5
14
±
0.15
16
14
±
0.15
16
Note: 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 1.)
1.4
Note: 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 1.)
1.4
Note: Unless otherwise indicated, dimensional tolerances for dimensions in the models above are ± 0.4 mm.
Output Codes
Output code number
06 (Binary Code)
Internal circuit
Dial display
0
1
2
3
4
5
6
7
8
9
Terminal
C
1
●
2
4
8
●
●
●
●
●
●
●
●
●
●
●
●
●
●
Note: The solid dot
●
indicates that the internal switch is ON (i.e., connected to the common terminal).
3
A7D/A7DP
Ordering Procedure
Place orders as shown in the example below, specifying the model and number.
1
2
3
4
5
1
1.
2.
3.
4.
5.
A7D-2M (End Caps): 1 pair
A7D-206-S@@ (Switch Unit with stopper): 1 piece
A7D-206 (Switch Unit): 1 piece
A7D-2P@ (Spacer): 1 piece
A7D-206 (Switch Unit): 2 pieces
Note: Standard products, such as the Switch Units and End Caps, are not factory-assembled for shipment. Contact your OMRON representative for details on ordering
factory-assembled sets.
Safety Precautions
Refer to
Safety Precautions for All Thumbwheel Switches
.
Precautions for Correct Use
Handling
•
The molded components of the Switch use polyacetal resin and
PBT 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.
•
Do not use thinner or other solutions which might damage the resin.
•
Terminals can withstand a force of 4.9 N for 10 seconds or more
(the mating strength of the case and seal), and survive bending of
20° without breaking after returning to original position. Do not use
excessive force or apply repetitive external force, however, when
handling terminals. In particular, take care to avoid dropping them
as the terminals might bend or break.
Soldering
•
Using a Soldering Iron
Use a 30-W soldering iron at a temperature of 350°C for a maximum
of 3 seconds, and flush as described above.
Do not apply force to the terminals during soldering and for 3 minutes
after soldering is completed. Doing so may result in conduction or
operation failure.
Ensure that soldering flux and alcohol do not penetrate into the Switch
interior
Setting Numbers
Pen-push Type
Press the center of the setting switch with the tip of a ball-point pen.
Do not use pencil point or mechanical pencil point to press the setting
switch, otherwise the lead of the pencil or mechanical pencil may be
broken and A7DP malfunctions may result due to fragments of the
broken lead.
•
The setting buttons can withstand 19.6 N for 1 minute, but do not
push the (+) and (-) buttons at the same time.
Screw-mounting Models
Tighten mounting screws to a torque between 0.2 to 0.24 N·m, using
M2.6 screws. Use plain washers or spring washers together with the
screws.
4
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). Omron
disclaims all other warranties, express or implied.
(b) Limitations. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT
NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCTS. BUYER
ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE
PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE.
Omron further disclaims all warranties and responsibility of any type for claims or expenses based on infringement by the
Products or otherwise of any intellectual property right. (c) Buyer Remedy.
Omron’s sole obligation hereunder shall be, at
Omron’s election, to (i) replace (in the form originally shipped with Buyer responsible for labor charges for removal or
replacement thereof) the non-complying Product, (ii) repair the non-complying Product, or (iii) repay or credit Buyer an amount
equal to the purchase price of the non-complying Product; provided that in no event shall Omron be responsible for warranty,
repair, indemnity or any other claims or expenses 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. Return of any Products by Buyer must be approved in writing by Omron before shipment. Omron Companies shall
not be liable for the suitability or unsuitability or the results from the use of Products in combination with any electrical or
electronic components, circuits, system assemblies or any other materials or substances or environments. Any advice,
recommendations or information given orally or in writing, are not to be construed as an amendment or addition to the above
warranty.
See
http://www.omron.com/global/
or contact your Omron representative for published information.
Limitation on Liability; Etc.
OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS,
WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE OR STRICT LIABILITY.
Further, in no event shall liability of Omron Companies exceed the individual price of the Product on which liability is asserted.
Suitability of Use.
Omron Companies shall not be responsible for conformity with any standards, codes or regulations which apply to the
combination of the Product in the Buyer’s application or use of the Product. At Buyer’s request, Omron will provide applicable
third party certification documents identifying ratings and limitations of use which apply to the Product. This information by itself
is not sufficient for a complete determination of the suitability of the Product in combination with the end product, machine,
system, or other application or use. Buyer shall be solely responsible for determining appropriateness of the particular Product
with respect to Buyer’s application, product or system. Buyer shall take application responsibility in all cases.
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.
2014.9
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 2014 All Right Reserved.
