12
Thumbwheel Switch A7j
A Wide Selection of Models:
Thumbwheel- or Push-operated,
Decimal or Hexadecimal
A wide selection ranging from miniature models
that save space to large models with enhanced
readability and operability.
Select models with the specifications desired, or
where long life and reliability are critical.
Additional
new models prevent value changes due
to accidental pressing of buttons. Pen-push or
locking types are available.
Ordering Information
Push-operated Switches
Model
and
ti
Terminals Color Output code
mounting 03
(decimal
code)
06
(binary
coded
decimal)
07
(binary
coded
decimal with
component
adding
provision)
19
(decimal
code with
component
adding
provision)
54
(binary
coded
hexadecimal)
55
(binary
coded
hexadecimal
with
component
adding
provision)
A7DP-2
(pen-push)
Si
PCB
terminal Light
gray --- A7DP-206 --- --- --- ---
(p p )
Snap-in Black A7DP-206-1
A7D-2
Snap-in PCB
terminal Light
gray --- A7D-206 --- --- --- ---
p
Black A7D-206-1
A7D-1
Screw
ti
PCB
terminal Light
gray --- A7D-106 --- --- --- ---
mounting Black A7D-106-1
A7CN
Screw
ti
PCB
terminal Light
gray --- --- --- --- --- ---
mounting Black A7CN-106-1
A7CN
Snap-in PCB
terminal Light
gray --- A7CN-206 --- --- --- ---
p
Black A7CN-206-1
A7CNL
(Locking)
Si
PCB
terminal Light
gray --- A7CN-L206 --- --- --- ---
(g)
Snap-in Black A7CN-L206-1
A7BL
(locking)
Snap
-
in
Solder
terminal
(see note
Light
gray --- A7BL-206 A7BL-207 --- --- ---
S
nap-
i
n
(
see no
t
e
1) Black A7BL-206-1 A7BL-207-1
A7BS
Snap-in Solder
terminal
(see note
Light
gray (A7BS-203) A7BS-206 A7BS-207 (A7BS-219) A7BS-254 A7BS-255
(
see no
t
e
1) Black (A7BS-203-1) A7BS-206-1 A7BS-207-1 (A7BS-219-1) A7BS-254-1 A7BS-255-1
A7jA7j
13
Model and
mounting Output codeColorTerminals
Model and
mounting 55
(binary
coded
hexadecimal
with
component
adding
provision)
54
(binary
coded
hexadecimal)
19
(decimal
code with
component
adding
provision)
07
(binary
coded
decimal with
component
adding
provision)
06
(binary
coded
decimal)
03
(decimal
code)
A7BS-
20j-S (with
external
Solder
terminal
(see note
Light
gray --- A7BS-206-S A7BS-207-S --- --- ---
external
Stoppers)
Snap-in
(see note
1) Black A7BS-206-S-
1A7BS-207-S-
1
A7PS
Snap-in Solder
terminal
(see note
Light
gray A7PS-203 A7PS-206 A7PS-207 A7PS-219 A7PS-254 A7PS-255
(
see no
t
e
1) Black A7PS-203-1 A7PS-206-1 A7PS-207-1 A7PS-219-1 A7PS-254-1 A7PS-255-1
A7PH
(long life)
Snap-in
Solder
terminal
(see note
Light
gray A7PH-203 A7PH-206 A7PH-207 A7PH-219 --- ---
Snap-in
(see note
1) Black A7PH-203-1 A7PH-206-1 A7PH-207-1 A7PH-219-1
Note: 1. T
erminals for use with PCBs are also available. Inquire for details.
2.
Please inquire about Code 01 models with +, – displays (-PM) and models in parentheses.
Accessories (Order Separately)
Applicable Switch
Uit
Color
End Caps
Spacers (see note 1)
Connectors
pp
Unit
Solder terminals
PCB terminals
A7D-1
Light gray
A7D-1M A7D-1PA --- ---
Black A7D-1M-1 A7D-1PA-1
A7DP-2/A7D-2
Light gray
A7D-2M A7D-2PA --- ---
Black A7D-2M-1 A7D-2PA-1
A7CN
Sti
Light gray
--- --- --- ---
Screw mounting Black A7CN-1M-1 A7CN-1Pj-1
A7CN/A7CN-L
Si
Light gray
A7CN-2M A7CN-2Pj--- ---
Snap-in Black A7CN-2M-1 A7CN-2Pj-1
A7BL/A7BS/
A7BS-20j
-S (see
Light gray
A7B-M A7B-PA A7B-C A7B-CP
A7B
S
-20j
-
S
(
see
note 2)
Black A7B-M-1 A7B-PA-1
A7PS
Light gray
A7P-M A7P-PA --- ---
Black A7P-M-1 A7P-PA-1
A7PH
Light gray
A7P-M A7P-PA --- ---
Black A7P-M-1 A7P-PA-1
Note: 1.
Spacers come standard without characters. Refer to page
30 for characters to be included.
2.
Stopper pin comes standard.
Model: A7BS-S
(Stopper pins come in pairs. They are shipped free initially
. Please make special arrangements for maintenance.)
A7jA7j
14
Thumbwheel Switches
Models
and
ti
Terminals Color Output code
mounting 01
(binary code with +,
– displayed)
03
(decimal code)
06
(binary coded
decimal)
07
(binary coded
decimal with
component adding
provision)
A7MD/
A7MD-jj-D
(see note 1)
PCB
terminal Black --- --- A7MD-106-P-09 ---
(see
note
1)
Fastens to panel
via printed
circuit board.
A7MD-106-P-09-D
(see note 1)
A7MA-1
Screw mounting Solder
terminal Black (A7MA-106-PM) (A7MA-103) A7MA-106 A7MA-107
g
PCB
terminal (A7MA-P2-PM) A7MA-106-P2 A7MA-107-P2
A7MA-2
Snap-in Solder
terminal Light
gray (A7MA-206-PM) --- A7MA-206 A7MA-207
p
Black (A7MA-206-PM-1) A7MA-206-1 A7MA-207-1
PCB
terminal Light
gray (A7MA-206-P2-PM) A7MA-206-P2 A7MA-207-P2
Black (A7MA-206-P2-
PM-1) A7MA-206-P2-1 A7MA-207-P2-1
A7SS
Screw mounting Solder
terminal Black (A7SS-106-PM) A7SS-103 A7SS-106 A7SS-107
A7AS
Snap-in Solder
terminal Light
gray (A7AS-206-PM) A7AS-203 A7AS-206 A7AS-207
p
Black (A7AS-206-PM-1) A7AS-203-1 A7AS-206-1 A7AS-207-1
Note: 1.
Indicates models with built-in diodes.
2.
Please inquire about models in parentheses.
Model and
ti
Terminals Color Output code
mounting 08
(06 + 22)
13
(double-side
d PCB
version of
06)
14
(06 with odd
parity)
19
(decimal
code with
component
adding
provision)
22
(06 with
complement
ary code)
36
(double-side
d PCB
verstion of
07)
A7SS
Screw
mounting
Solder
terminal Black --- --- --- A7SS-119 --- ---
A7AS
Snap-in Solder
terminal Light
gray --- --- --- A7AS-219 (A7AS-222) ---
p
Black A7AS-219-1 (A7AS-222-1)
Note:
Inquire about models in parentheses.
Accessories (Order Separately)
Applicable Switch
Uit
Color End Caps (left-right
t)
Spacers (see note 2)
Connectors
pp
Unit
p( g
set)
Solder terminal
PCB terminal
A7MD(-D) Black A7MD-1M A7MD-PA --- ---
A7MA-1 Black A7M-1M A7M-1PA --- ---
A7MA-2
Light gray
A7M-2M A7M-2PA --- ---
Black A7M-2M-1 A7M-2PA-1
A7SS Black A7SS-M --- --- ---
A7AS
Light gray
A7AS-M --- --- ---
Black A7AS-M-1 ---
Note: 1. Spacers
serve the same purpose as spare Switch Units, except that their widths dif
fer
. Refer to page
30 ,
Dimensions
, for further
information.
2. Spacers
come standard without characters. Refer to page
30 for characters to be included.
A7jA7j
15
Ordering Procedure
Configurations
The Thumbwheel Switch is generally used in the configuration
shown
below
.
4
1: Switch Unit refers to the Switch itself. As each digit is
independent of the others, a number of Switch Units are
assembled
to make up just the number of digits needed.
2: Spacers
can be used in case the
number of digits change due
to
a change in specifications. When
units for time and length
must
be displayed, the necessary letters and symbols can be
printed or stamped. The stamping shown in the following
table
can be produced. Inquire for details.
Stamping
Symbol A B C D E F G
Stamp No
desig-
nation
SEC MIN H g kg mm
Symbol H J K L Q T U
Stamp cm m °C PCS
x 10
SEC 0S
3, 4:
End
Caps/Side Plates: These are used at both ends of the
Switch
Unit to insure a solid mount of each Switch Unit to a
panel.
Left and right plates make a set.
5: Connectors: Since the Switch Unit snaps right into a
Connector, accomplishing both attachment and wiring in a
single action, connections, maintenance and inspection are
greatly
simplified.
Ordering
Standard
products such as the Switch Units and End Caps are not
factory-assembled for shipment. Place orders as shown below,
specifying
the model and number of Switch Units.
Ordering Example:
Figure
Product name
Model Number of
Units
1 Switch Unit A7BS-206-1 2
2
Spare Unit
A7B-PA-1 1
3
Attachment Board
A7B-M-1
1 set
4
5 Connector A7B-CP 2
Special Characters and Symbols for Dial Displays
Dials
can be ordered with special characters or symbols as well as
with Stoppers attached. Ask your OMRON sales representatives.
Positive, Negative Dials
To
order dials marked with +, –, +, –, ... in place of the numerals 0 to
9, add the suf
fix -PM to the model
number
. (Refer to page
18 for de
-
tails)
Example:
A7PS-203-PM
Attaching Stoppers
Stoppers
are used to limit the display
range from 0 to 9 down to 0 to
5,
for example.
Add -S
jj
to the suf
fix, specifying the range in the blanks.
Example: A7PS-203-S05
Units
to which Stoppers can be attached are the A7DP
, A7D, A7BL,
A7PS,
A7PH, A7SS, and A7AS.
On
the outside of the A7BS-
j
-S is a Stopper Pin with
which the user
can
make any setting.
The A7CN-2, A7CN-1, A7CN-L, A7MD, and A7MA cannot be
equipped
with Stoppers.
A7jA7j
16
Specifications
Ratings/Characteristics
Push-operated Switches
Item A7DP-2/A7D-1
/A7D-2 A7CN/A7CN-L A7BL/A7BS
/A7BS-20j-S A7PS A7PH
Switching
capacity (resistive
load)
5 to 30 VDC
1 mA to 0.1 A
5 to 28 VDC
1 mA to 0.1 A 125 V
AC/28 VDC
10
µ
A to 0.15 A
Continuous carry current
100 mA
1 A max. 3 A max.
Contact resistance
200 m
Ω
max.
Insulation
resistance Between
non-connected
terminals
10 M
Ω
min. (at 250 VDC)
10 M
Ω
min. (at 500 VDC)
100 M
Ω
min. (at
500 VDC)
Between
terminal and
non-current
carrying part
100 M
Ω
min. (at 500 VDC)
1,000 M
Ω
min. (at 500 VDC)
Dielectric
strength Between
non-connected
terminals
250 V
AC,
50/60 Hz for
1 min
200 V
AC,
50/60 Hz for
1 min
600 V
AC, 50/60 Hz for 1 min
Between
terminal and
non-current
carrying part
1,000 V
AC, 50/60 Hz for 1 min
Vibration
resistance Malfunction
10 to 55 Hz, 1.5-mm double amplitude
Shock
resistance Malfunction
500 m/s
2
min.
(approx. 50G)
490 m/s
2
min.
(approx. 50G)
500 m/s
2
min. (approx. 50G)
Life
expectancy Mechanical
30,000 operations min.
100,000 operations min.
2,000,000
operations min.
Electrical
20,000 operations min. 50,000 operations min.
1,000,000
operations min.
Ambient temperature (with no
icing) Operating:
–10°
C to 70
°C
Storage:
–20°
C to 80
°C
Operating: –10°
C to 65
°C
Storage: –20°
C to 80
°C
Ambient humidity
Operating: 45%
to 85%
Operating: 35%
to 85%
Operating: 45% to 85%
Max. operating force
3.45 N (350 gf) 4.41 N (450 gf)
5.4 N (550 gf)
6.35 N (650 g)
A7jA7j
17
Thumbwheel Switches
Item A7MD/A7MD-jj-D
(see
note 1)
A7MA-1/A7MA-2 A7SS A7AS
Switching capacity (resistive
load)
5 to 28 VDC
1 mA to 0.1 A
50 V
AC to 28 VDC
1 mA to 0.1 A
Continuous carry current
1 A max.
Contact resistance
200 m
Ω
max., 10
Ω
max. (see note 2)
200 m
Ω
max.
Insulation
resistance
(see note 1)
Between
non-connected
terminals
10 M
Ω
min. (at 500 VDC)
Between
terminal and
non-current
carrying part
1,000 M
Ω
min. (at 500 VDC)
Dielectric
strength
(see note 1)
Between
non-connected
terminals
200 V
AC, 50/60 Hz for 1 min
600 V
AC, 50/60 Hz for 1 min
Between
terminal and
non-current
carrying part
1,000 V
AC, 50/60 Hz for 1 min
Vibration
resistance Malfunction
10 to 55 Hz, 1.5-mm double amplitude
Shock
resistance Malfunction
200 m/s
2
min. (approx. 20G)
490 m/s
2
min. (approx. 50G)
Life
t
Mechanical
30,000 operations min.
1,000,000 operations min.
expectancy Electrical
20,000 operations min. 50,000 operations min.
Ambient temperature (with no
icing) Operating: –10°
C to 65
°C
Storage: –20°
C to 80
°COperating: –40°
C to 85
°C
Storage: –40°
C to 85
°C
Ambient humidity
Operating: 45% to 85%
Max. operating force max.
2.95 N (300 gf)
3.9 N (400 gf)
Note: 1.
For A7MD(-D) with diode, the dielectric strength was measured at display of “0.”
2.
Contact resistance for A7MD(-D) with diode was evaluated at 6 to 8 VDC, 0.1 A. Reverse-direction voltage was 35 V (min.).
Operation
Output Codes
Output
code types are distinguished according to terminal numbers on Switch Units.
How to Read Output Codes
Example for Output Code 06
For
example, when the dial
position is “3,” the common terminal C
on
the Switch Unit is
connected to terminals 1 and 2, as indicated by
the
solid dots in the output code table. The internal circuitry is
shown
below.
Switch
Reference
The internal circuit with diodes for the A7MD-106-P-09 is shown
here,
but the output condition
and concepts are the same as those
to
the left.
Diode
Switch
A7jA7j
18
When
a Switch is inserted into a Connector
, e.g., for the A7BS, the common terminal C becomes connector
terminal 2, and terminals 1 and 2
become
connector terminals 4 and 5, respectively
.
06: Binary-coded Decimal Output, Single-sided Board
Thumbwheel Switch Unit
Terminal numbers
Connector
Model
A7BS
Dial
Switch
Unit or
Connector
Common
terminal
number
Terminals con-
nected to common
Switch Unit
Connector C
2124 8
456 7
0
1
2
3
4
5
6
7
8
9
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
The
solid dot
S
indicates that the internal switch is ON.
Output Code Types
Decimal
Code
03: Decimal Code Output
Model Switch
Unit or
Connector
Common
terminal
number
Terminals connected to common
A7SS
A7AS Switch Unit C 0 1 2 3 4 5 6 7 8 9
A7AS
A7PS
A7PH Connector 6 1 2 3 4 5 7 8 9 10 11
Dial 0 S
1S
2S
3S
4S
5S
6S
7S
8S
9S
19:
Decimal Code Output with Component-adding Provision
Model Switch
Unit or
Connector
Common
terminal
number
Terminals connected to common
A7SS
A7AS Switch Unit C 0 1 2 3 4 5 6 7 8 9
A7AS
A7PS
A7PH Connector 6 1 2 3 4 5 7 8 9 10 11
Dial 0 S
1S
2S
3S
4S
5S
6S
7S
8S
9S
Binary
Code
01: Binary Code Output (+, – Switching)
Model Switch Unit or
Connector Common
terminal
number
Terminals connected
to common
Dial + S S
–S S
: ::::
+S S
–S S
PM
Models
1. For
models other
than those listed on the left, use models with
dials
displaying “+, –, +, –, ..., –” instead of “0, 1, 2, ..., 9”.
2.
These models end with a -PM.
Example: A7BS-206-PM
The output codes and terminals are the same as the
A7BS-206; however, binary code output is used between
output
terminal 1 and the common terminal.
A7jA7j
19
Example of A7BS-206-PM
Model Switch Unit or
Connector Common
terminal
number
Terminals connected
to common
A7BS Switch Unit C 1248
Connector 2 4 5 6 7
Dial
+ (0)
– (1)
S
+ (2)
S
– (3)
S S
+ (4)
S
– (5)
S S
+ (6)
S S
– (7)
SSS
+ (8)
S
– (9)
S S
Note: 1. The
solid dot
S
indicates that the internal switch is ON.
2. Numbers
enclosed in
parentheses are the dial displays
for
the A7BS-206.
Connectors
A7BS-206-PM Thumbwheel Switch
Connector
Not
used
Binary
Code Decimal
06: Binary-coded Decimal Output, Single-sided Board
Model Switch Unit or
Connector Common
terminal
number
Terminals connected
to common
A7BL
A7BS
Switch Unit C 1 2 4 8
A7BL
A7BS Connector 2 4 5 6 7
A7MD (see
note)
A7MA (see
note)
A7SS
A7DP
Switch Unit C 1 2 4 8
A7DP
A7D (see
note)
A7CN
A7CN-L
A7PS
A7PH
Connector 3 5 7 9 11
Dial 0
1S
2S
3S S
4S
5S S
6S S
7S S S
8S
9S S
Note: There is no Connector on the A7MD, A7MA, A7Dj, and
A7Cj.
22:
Complementary Code of 06
Model Switch Unit or
connector Common
terminal
number
Terminals connected
to common
A7BS Switch Unit C 1 2 4 8
A7BS
Connector 2 4 5 6 7
Dial 0 S S S S
1S S S
2S S S
3S S
4S S S
5S S
6S S
7S
8S S S
9S S
A7jA7j
20
07:
Binary-code Decimal Output with Component-adding
Provision
Model Switch Unit or
Connector Common
terminal
number
Terminals connected
to common
A7BL
A7BS
Switch Unit C 1248
A7BL
A7BS Connector
1, 2
4567
A7MA (see
note)
A7SS
Switch Unit C 1248
A7SS
A7AS
A7PS
A7PH
Connector
1, 3
57911
Dial 0
1S
2S
3S S
4S
5S S
6S S
7SSS
8S
9S S
Note: There
is no Connector on the A7MA.
Binary-coded Hexadecimal
54: Binary-coded Hexadecimal Output
Model Switch Unit or
Connector Common
terminal
number
Terminals connected
to common
A7BS Switch Unit C 1248
A7BS
Connector 2 4 5 6 7
A7PS Switch Unit C 1248
Connector 3 5 7 9 11
Dial 0
1S
2S
3S S
4S
5S S
6S S
7SSS
8S
9S S
AS S
BS S S
CS S
DS S S
ESSS
FSSSS
55:
Binary-coded Hexadecimal Output with Component-ad
-
ding Provision
Model Switch Unit or
Connector Common
terminal
number
Terminals connected
to common
A7BS Switch Unit C 1248
A7BS
Connector
1, 2
4567
A7PS Switch Unit C 1248
Connector
1, 3
57911
Dial 0
1S
2S
3S S
4S
5S S
6S S
7SSS
8S
9S S
AS S
BS S S
CS S
DS S S
ESSS
FSSSS
A7jA7j
21
Dimensions
Note: All
units are in millimeters unless otherwise indicated.
Push-operated Switches
A7DP-206(-1)
PCB Terminals,
Pen-push Model
Note: Common
terminal C is at the bottom when the Switch Unit
is
viewed from the front.
Panel Cutout
Panel thickness: 1 to 2
Number
of
Switches (n)
A
(n x 5.1 + 5)
B
(n x 5.1 + 3)
C
1
10.1 mm
8.1 mm 8.4 mm
2
15.2 mm 13.2 mm 13.5 mm
3
20.3 mm 18.3 mm 18.6 mm
4
25.4 mm 23.4 mm 23.7 mm
5
30.5 mm 28.5 mm 28.8 mm
6
35.5 mm 33.5 mm 33.9 mm
7
40.6 mm 38.6 mm 39.0 mm
8
45.7 mm 43.7 mm 44.1 mm
9
50.8 mm 48.8 mm 49.2 mm
10
55.9 mm 53.9 mm 54.3 mm
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 ap
-
plies
to all dimensions.
The tolerance for multiple connection is ±(number of
units
x 0.4) mm.
A7D-106(-1)
PCB Terminals
Note: Common terminal C is at the bottom when the Switch
Unit
is viewed from the front.
Panel Cutout
Panel thickness: 2
Tow
, M2.6 or
2.8 mm holes
Number
of
Switches
(n)
A
(n
x 5.1 +
3)
B
(n x 5.1 +
8.3)
C
(n x 5.1 +
13.3)
D
1
8.1 mm
13.4 mm 18.4 mm
8.4 mm
2
13.2 mm 18.5 mm 23.5 mm 13.5 mm
3
18.3 mm 23.6 mm 28.6 mm 18.6 mm
4
23.4 mm 28.7 mm 33.7 mm 23.7 mm
5
28.5 mm 33.8 mm 38.8 mm 28.8 mm
6
33.5 mm 38.9 mm 43.9 mm 33.9 mm
7
38.6 mm 44.0 mm 49.0 mm 39.0 mm
8
43.7 mm 49.1 mm 54.1 mm 44.1 mm
9
48.8 mm 54.2 mm 59.2 mm 49.2 mm
10
53.9 mm 59.3 mm 64.3 mm 54.3 mm
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 ap
-
plies
to all dimensions.
The tolerance for multiple connection is ±(number of
units
x 0.4) mm.
A7jA7j
22
Note: Common
terminal C is at the bottom when the Switch Unit
is
viewed from the front.
Panel Cutout
A7D-206(-1)
PCB Terminals
Panel thickness: 1 to 2
Number
of
Switches (n)
A
(n x 5.1 + 5)
B
(n x 5.1 + 3)
C
(n x 5.1 +
3.3)
1
10.1 mm
8.1 mm 8.4 mm
2
15.2 mm 13.2 mm 13.5 mm
3
20.3 mm 18.3 mm 18.6 mm
4
25.4 mm 23.4 mm 23.7 mm
5
30.5 mm 28.5 mm 28.8 mm
6
35.5 mm 33.5 mm 33.9 mm
7
40.6 mm 38.6 mm 39.0 mm
8
45.7 mm 43.7 mm 44.1 mm
9
50.8 mm 48.8 mm 49.2 mm
10
55.9 mm 53.9 mm 54.3 mm
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 ap
-
plies
to all dimensions.
The tolerance for multiple connection is ±(number of
units
x 0.4) mm.
Two,
M2.5 or
M2.6
Panel thickness: 2
Panel Cutout
PCB terminal
A7CN-106-1
Note: Common terminal C is at the bottom when the
Switch
Unit is viewed from the front.
Number of
Switches (n)
A
(n x 6 + 6)
B
(n x 6 + 1
1) C
(n x 6 + 16)
1
12 mm 17 mm 22 mm
2
18 mm 23 mm 28 mm
3
24 mm 29 mm 34 mm
4
30 mm 35 mm 40 mm
5
36 mm 41 mm 46 mm
6
42 mm 47 mm 52 mm
7
48 mm 53 mm 58 mm
8
54 mm 59 mm 64 mm
9
60 mm 65 mm 70 mm
10
66 mm 71 mm 76 mm
Note: 1. The
dimensions
above include both End Caps, and will
increase
6 mm for each Spacer inserted.
2. Unless
otherwise
specified, a tolerance of
±
0.4 mm ap
-
plies
to all dimensions.
The tolerance for multiple connection is ±(number of
units
x 0.4) mm.
A7jA7j
23
Panel thickness: 1 to 2
Panel Cutout
PCB terminal
A7CN-206(-1)
Note: Common terminal C is at the bottom when the
Switch
Unit is viewed from the front.
Number of
Switches (n)
A (n x 6 + 8) B (n x 6 + 6)
1
14 mm 12 mm
2
20 mm 18 mm
3
26 mm 24 mm
4
32 mm 30 mm
5
38 mm 36 mm
6
44 mm 42 mm
7
50 mm 48 mm
8
56 mm 54 mm
9
62 mm 60 mm
10
68 mm 66 mm
Note: 1. The
dimensions
above include both End Caps, and will
increase
6 mm for each Spacer inserted.
2. Unless
otherwise
specified, a tolerance of
±
0.4 mm ap
-
plies
to all dimensions.
The tolerance for multiple connection is ±(number of
units
x 0.4) mm.
Panel thickness: 1 to 2
When setting
Panel Cutout
PCB terminal
Note: Common terminal C is at the bottom when the
Switch
Unit is viewed from the front.
A7CN-L206(-1) Number of
Switches (n)
A (n x 6 + 8) B (n x 6 + 6)
1
14 mm 12 mm
2
20 mm 18 mm
3
26 mm 24 mm
4
32 mm 30 mm
5
38 mm 36 mm
6
44 mm 42 mm
7
50 mm 48 mm
8
56 mm 54 mm
9
62 mm 60 mm
10
68 mm 66 mm
Note: 1. The
dimensions
above include both End Caps, and will
increase
6 mm for each Spacer inserted.
2. Unless
otherwise
specified, a tolerance of
±
0.4 mm ap
-
plies
to all dimensions.
The tolerance for multiple connection is ±(number of
units
x 0.4) mm.
A7jA7j
24
Panel Cutout
A7BL-206(-1)
A7BL-207(-1)
Solder Terminals,
Locking Models
Note: If
the output code is 06, the dimension is 32.5; if the
output code is 07, the dimension is 43.5.
When setting Panel thickness: 1 to 3
(See note)
Number
of
Switches (n)
A
(n x 8 + 8)
B
(n x 8 + 6)
C
1
16 mm 14 mm
14.4 mm
2
24 mm 22 mm
22.4 mm
3
32 mm 30 mm
30.4 mm
4
40 mm 38 mm
38.4 mm
5
48 mm 46 mm
46.8 mm
6
56 mm 54 mm
54.8 mm
7
64 mm 62 mm
62.8 mm
8
72 mm 70 mm
70.8 mm
9
80 mm 78 mm
78.8 mm
10
88 mm 86 mm
86.8 mm
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 ap
-
plies
to all dimensions.
The tolerance for multiple connection is ±(number of
units
x 0.4) mm.
Panel Cutout
A7BS-2jj(-1)
A7BS-20jj(-1)
Solder Terminals
Note: 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
(See note)
Number
of
Switches (n)
A
(n x 8 + 8)
B
(n x 8 + 6)
C
1
16 mm 14 mm
14.4 mm
2
24 mm 22 mm
22.4 mm
3
32 mm 30 mm
30.4 mm
4
40 mm 38 mm
38.4 mm
5
48 mm 46 mm
46.8 mm
6
56 mm 54 mm
54.8 mm
7
64 mm 62 mm
62.8 mm
8
72 mm 70 mm
70.8 mm
9
80 mm 78 mm
78.8 mm
10
88 mm 86 mm
86.8 mm
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 ap
-
plies
to all dimensions.
The tolerance for multiple connection is ±(number of
units
x 0.4) mm.
A7jA7j
25
Panel Cutout
A7PS-2jj(-1)
A7PH-2jj(-1)
Solder Terminals
Note: If
the output code is 03, 06 or 54, the dimension is 43; if
the output code is 07, 19 or 55, the dimension is 55.
(See note)
Panel thickness: 1 to 3
Number
of
Switches (n)
A (n x 10 + 12)
B (n x 10 + 9)
1
22 mm 19 mm
2
32 mm 29 mm
3
42 mm 39 mm
4
52 mm 49 mm
5
62 mm 59 mm
6
72 mm 69 mm
7
82 mm 79 mm
8
92 mm 89 mm
9
102 mm
99 mm
10 1
12 mm
109 mm
Note: 1. The
dimensions
above include both End Caps, and will
increase
10 mm for each Spacer inserted.
2. Unless
otherwise
specified, a tolerance of
±
0.4 mm ap
-
plies
to all dimensions.
The tolerance for multiple connection is ±(number of
units
x 0.4) mm.
Thumbwheel-operated Switches
Panel Cutout
A7MD-106-P-09
A7MD-106-P-09-D
PCB Terminals
Panel thickness: 2
P = 2.54
Number
of
Switches (n)
A (5n + 3) B (5n + 5)
1
8 mm
10 mm
2
13 mm 15 mm
3
18 mm 20 mm
4
23 mm 25 mm
5
28 mm 30 mm
6
33 mm 35 mm
7
38 mm 40 mm
8
43 mm 45 mm
9
48 mm 50 mm
10
53 mm 55 mm
Note: 1. The
dimensions
above include both End Caps, and will
increase
6 mm for each Spacer inserted.
2. Unless
otherwise
specified, a tolerance of
±
0.4 mm ap
-
plies
to all dimensions.
The tolerance for multiple connection is ±(number of
units
x 0.4) mm.
A7jA7j
26
A7MA-1jj Solder Terminals
Note: If
the output code is 06, the dimension is 19; if the output
code
is 07, the dimension is 31.
A7MA-1jj-P2 PCB Terminals
Note: If
the output code is 06, the dimension is 19; if the output
code
is 07, the dimension is 31.
Panel thickness: 2
(See note)
Two, M2.6
(See note)
Panel thickness: 2
Two, M2.6
P
= 2.54
Panel Cutout
Panel Cutout
Number of
Switches (n)
A
(6n + 6)
B
(6n + 1
1) C
(6n + 16)
1
12 mm 17 mm 22 mm
2
18 mm 23 mm 28 mm
3
24 mm 29 mm 34 mm
4
30 mm 35 mm 40 mm
5
36 mm 41 mm 46 mm
6
42 mm 47 mm 52 mm
7
48 mm 53 mm 58 mm
8
54 mm 59 mm 64 mm
9
60 mm 65 mm 70 mm
10
66 mm 71 mm 76 mm
Note: 1. The
dimensions
above include both End Caps, and will
increase
6 mm for each Spacer inserted.
2. Unless
otherwise
specified, a tolerance of
±
0.4 mm ap
-
plies
to all dimensions.
The tolerance for multiple connection is ±(number of
units
x 0.4) mm.
A7jA7j
27
Panel Cutout
A7MA-2jj(-1)
Solder Terminals
Note: If
the output code is 06, the dimension is 19; if the output
code
is 07, the dimension is 31.
(See note)
Panel thickness: 1 to 2
Number
of
Switches (n)
A
(6n + 8)
B
(6n + 10)
1
14 mm 16 mm
2
20 mm 22 mm
3
26 mm 28 mm
4
32 mm 34 mm
5
38 mm 40 mm
6
44 mm 46 mm
7
50 mm 52 mm
8
56 mm 58 mm
9
62 mm 64 mm
10
68 mm 70 mm
Note: 1. The
dimensions
above include both End Caps, and will
increase
6 mm for each Spacer inserted.
2. Unless
otherwise
specified, a tolerance of
±
0.4 mm ap
-
plies
to all dimensions.
The tolerance for multiple connection is ±(number of
units
x 0.4) mm.
Panel Cutout
Note: If
the output code is 06, the dimension is 19; if the output
code
is 07, the dimension is 31.
A7MA-2jj-P2(-1)
PCB Terminals
Panel thickness: 1 to 2
(See note)
P
= 2.54
Number
of
Switches (n)
A
(6n + 8)
B
(6n + 10)
1
14 mm 16 mm
2
20 mm 22 mm
3
26 mm 28 mm
4
32 mm 34 mm
5
38 mm 40 mm
6
44 mm 46 mm
7
50 mm 52 mm
8
56 mm 58 mm
9
62 mm 64 mm
10
68 mm 70 mm
Note: 1. The
dimensions
above include both End Caps, and will
increase
6 mm for each Spacer inserted.
2. Unless
otherwise
specified, a tolerance of
±
0.4 mm ap
-
plies
to all dimensions.
The tolerance for multiple connection is ±(number of
units
x 0.4) mm.
A7jA7j
28
A7SS-1jj
Solder Terminals
Note: If
the output code is 03 or 06, the dimension is 43; if the
output
code is 07, the dimension is 55.
(See note)
Panel thickness: 3.4
Four, M3 or 3.2 holes
Panel Cutout
Number of
Switches (n)
A
(12.7n + 22)
B
(12.7n +
14.8)
C
(12.7n + 10)
1
34.7 mm 27.5 mm 22.7 mm
2
47.4 mm 40.2 mm 35.4 mm
3
60.1 mm 52.9 mm 48.1 mm
4
72.8 mm 65.6 mm 60.8 mm
5
85.5 mm 78.3 mm 73.5 mm
6
98.2 mm 91.0 mm 86.2 mm
7 1
10.9 mm
103.7 mm
98.9 mm
8
123.6 mm
1
16.4 mm
11
1.6 mm
9
136.3 mm 129.1 mm 124.3 mm
10
149.0 mm 141.8 mm 137.0 mm
Note: 1. The
dimensions
above include both End Caps, and will
increase 12.7 mm for each additional Switch inserted
(6.35-mm
wide Spacers are also available).
2. Unless
otherwise
specified, a tolerance of
±
0.4 mm ap
-
plies
to all dimensions.
The tolerance for multiple connection is ±(number of
units
x 0.4) mm.
A7AS-2jj(-1)
Solder terminals
Note: If
the output code is 03 or 06, the dimension is 41.5; if
the output code is 07 or 19, the dimension is 55.
Panel thickness: 1 to 3
(See note)
Panel Cutout
Number of
Switches (n)
A
(8n + 1
1) B
(8n + 8)
C
(B + 1)
1
19 mm 16 mm 17 mm
2
27 mm 24 mm 25 mm
3
35 mm 32 mm 33 mm
4
43 mm 40 mm 41 mm
5
51 mm 48 mm 49 mm
6
59 mm 56 mm 57 mm
7
67 mm 64 mm 65 mm
8
75 mm 72 mm 73 mm
9
83 mm 80 mm 81 mm
10
91 mm 88 mm 89 mm
Note: 1. The
dimensions
above include both End Caps, and will
increase
8 mm for each additional Switch inserted.
2. Unless
otherwise
specified, a tolerance of
±
0.4 mm ap
-
plies
to all dimensions.
The tolerance for multiple connection is ±(number of
units
x 0.4) mm.
A7jA7j
29
Accessories (Order Separately)
End Caps for Push-operated Switches
A7D-1M(-1) Screw Mounting (Back Mounting)
Left
Side
Right Side
A7D-2M(-1) Snap-in Mounting (Front Mounting)
Left
Side
Right Side
A7CN-1M-1 Screw Mounting
Left
Side
Right Side
A7CN-2M-1 Snap-in Mounting
Left
Side
Right Side
A7B-M(-1) Snap-in Panel Mounting
Left
Side
Right Side
A7P-M(-1) Snap-in Panel Mounting
Left
Side
Right Side
A7jA7j
30
End Caps for Thumbwheel Switches
A7MD-1M PCB Mounting (Side Plate)
Left
Side
Right Side
A7M-1M Screw Panel Mounting
Left
Side
Right Side
Note: The A7MD cannot be mounted by a screw
panel
or snap-in panel. Fasten
the PC board
after
mounting the A7MD to the PC board.
A7M-2M(-1) Snap-in Panel Mounting
Left
Side
A7SS-M and SRT-M Screw Panel Mounting
Left
Side
Right Side Right Side
A7AS-M(-1) Snap-in Panel Mounting
Left
Side
Right Side
Spacers for Push-operated Switches
A7D-1PA(-1) Screw Mounting (Back Mounting) A7D-2PA(-1) Snap-in Mounting (Front Mounting)
A7CN-1P-1
Screw Panel Mounting Model A7CN-2P-1
Snap-in Mounting Model
A7B-PA(-1) Snap-in Panel Mounting A7P-PA(-1) Snap-in Panel Mounting
A7jA7j
31
Spacers for Thumbwheel Switches
A7MD-PA PCB Mounting A7M-1PA Screw Panel Mounting
A7M-2PA(-1) Snap-in Panel Mounting
Stamping
When
units of time or lengths are required, stamping any of the additional Switches and Spacers above with text or symbols is possible. Desig
-
nate
the desired stamping by symbol to substitute the “A” for the “-P
A” on the model numbers according to the table below
.
Symbol A B C D E F G H J K L Q T U
Stamp No
desig-
nation
SEC MIN H g kg mm cm m °C PCS
x 10
SEC 0S
Stopper Pins (for Only the A7BS-20j-S)
Note: 1. Two
pins constitute one set.
2.
The first shipment is free and is attached to the Switch.
2.4 dia. 1.2 dia.
Connectors
These
devices allow Switches to be quickly removed for maintenance and inspection of connectivity
, and quickly re-installed.
A7B-C Solder Terminals A7B-CP PCB Terminals
Inserting Connectors
Insert
Connectors with the “UP” arrow pointing up.
3.3 dia.
P = 2.54
P = 2.54 0.6 x 0.6
Connector
Note: Unless otherwise indicated, dimensional tolerances
for
dimensions in the models above are
"
0.4 mm.
A7jA7j
32
Installation
Terminals
Push-operated Switches
Output
code A7DP-2/A7D-1
/A7D-2
(PCB
terminals)
A7CN-2/A7CN-1
/A7CN-L
(PCB terminals)
A7BL
(solder terminals)
A7BS/A7BS-20j-S
(solder terminals)
A7PS/A7PH
(solder terminals)
03 --- -- -- --
22, 1-dia.
holes
06
14, 1-dia.
holes 14, 1-dia.
holes 10, 1-dia.
holes
07 -- --
28, 1-dia.
holes 28, 1-dia.
holes
23, 1-dia.
holes
19 -- -- -- -- 44, 1-dia.
holes
54 -- -- --
14, 1-dia.
holes 10, 1-dia.
holes
55 -- -- --
28, 1-dia.
holes
23, 1-dia.
holes
A7jA7j
33
Thumbwheel Switches
Output
code A7MD
(PCB
terminals)
A7MA-j
(solder terminals)
A7MA-j-P2
(PCB terminals) A7SS/A7AS
(solder terminals)
01 -- -- -- --
03 -- -- --
22, 1-dia. holes
06
(13)
10, 1-dia. holes 10, 1-dia. holes
22, 1-dia. holes
07
(36)
-- 18, 1-dia. holes 18, 1-dia. holes
44, 1-dia.
holes
08 -- -- -- --
-- -- -- --
19 -- -- -- 44, 1-dia. holes
22 -- -- -- --
A7jA7j
34
Switches with Component-adding Provision
To
add diodes or resistors to Thumbwheel Switch circuits, use models with terminals that allocate component-adding provisions (e.g., output
codes
07, 19, 55, etc.).
Examples
Circuit example
Circuit board
Application example
For
mounting
diodes Diode
Thumbwheel Switch
Note: Use the terminal
marked with the as-
terisk
*
if the common
terminal
needs no re
-
sistor
or diode.
Diode
Thumbwheel Switch
(e.g., A7PS-207)
For
Programmable Controller inputs (OMRON C500 or C2000H)
Thumbwheel Switch
24
VDC
programmable
controller
(+24
V)
(0V)
+24 VDC
For
mounting
resistors
Thumbwheel Switch
Thumbwheel Switch
(e.g., A7PS-219)
Resistor As
a voltage divider or digital variable resistor
Output
Input
Thumbwheel
Switch
A7jA7j
35
Precautions
Environment
Do
not use where gases are generated (ammonia, chlorine, sulfur
dioxide).
Although Switches are of nearly dust-proof construction, they are
not
drip-proof, therefore do not use in areas subject to water or oil
exposure
and do not operate with wet or oily hands. (The A7MD has
a
dust-proof construction on contact parts, but
consider your instal
-
lation location carefully. The A7MA is not of dust-proof construc-
tion.)
Provide additional dust-proofing measure when using in sand-ex-
posed
areas.
Setting Numbers
Locking
T
ype
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 accidental
-
ly.
Pen-push
T
ype
To
set, press the setting button with a
ball-point pen or other pointed
object.
However
, avoid using pencils or mechanical pencils as bro
-
ken
lead or lead dust may enter and damage the Switch.
Handling
Use alcohol to wipe off dirt and smudges from the molded-plastic
cases.
T
ake care to prevent the alcohol from getting inside.
Do
not use thinner or other solutions which might damage the plas
-
tic.
When
connecting Switches, fit the mating parts together
.
When
separating Switches, use a screwdriver as shown in the
fig
-
ure
below;
disconnect them by releasing the top and bottom hooks.
Do
not push the (+) and (–) operating push-buttons at the same time
with
undue force.
Terminals for PCB Models
When
using terminals for printed circuit boards, make the terminal
insertion holes in the back board (mother board) 1 mm or larger in
diameter.
Do not use excessive force in handling terminals for printed circuit
boards.
In particular
, take care to avoid
dropping them as the termi
-
nals
might bend or break.
Reference: Terminals
can withstand a force of 0.8 g for 1 minute or
more,
and survive bending
of 20
°
without breaking after
returning
to original position.
The
A7MD accommodates only printed circuit boards. When pulling
out
the operating surface from the back of the panel, refer
to the fig
-
ures for panel mounting dimensions. However, it cannot be fas-
tened
alone to the panel.
Connectors
Insert
Connectors while keeping the arrow pointing up (refer to page
31).
Connector
insertion load is about 1.5 kg for each A7B-C.
Setting the Stopper (A7BS-20j-S)
With
the A7BS-20
j
-S, any range
can be set outside with the Stop
-
per
Pin. Insert the Stopper Pin using the following procedure:
(3) Stopper Pin (upper limit) (2) Stopper Pin (lower limit)
(1) Display window
Example:
T
o 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”).
A7jA7j
36
5. Confirm that the (–) push-button can no longer be pushed
after reaching the lower limit of (“0”). This completes the
setting.
For
Stoppers other than those for the A7BS-20-S, refer to pages
5 to
11 of the Selection Guide as well as the ordering information on
page 15. All manufactured Switches have their ranges factory-set
before
shipment.
Soldering
Note the following points when soldering printed circuit boards:
Automatic Soldering
After
coating with flux foam 1, dip into a soldering tank 2. Thereafter
,
do not dip to clean. There is no danger of flux penetration in pro-
cesses
1 and 2, but penetration will occur with dip cleaning, causing
contact
and rotational defects. Clean the flux as shown in Figure 1,
tilting
the Switch 45
°
or more and using a brush to
apply the solvent
only
to the back of the board. It may also
be cleaned by dipping only
the
back of
the board into solvent and then using a brush to clean.
Back of board
Wipe away flux
with a brush.
45°
or
more
Figure
1
Dip Soldering
Dip
into flux solvent 1, and then
into a soldering tank 2. The dipping
time
in process 1
is a maximum of 2 seconds. As shown in Figure 2,
avoid
flooding the top surface of the printed circuit board with flux.
Using a brush to apply flux further reduces the danger of flux pe-
netration.
As shown in
Figure 2, a brush should be used while tilting
the
board 45
°
or more. Flush flux
as described above under
Auto-
matic Soldering
.
Top surface of board
Figure
2
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.
