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Encoder
20mm Size Metal Shaft Type
EC20A/RK203 Series
Heavy torque and comfortable operation feel with compliance to encoder and potentiometer applications.
Detector Push Rating Slide Operating life Rotary Encoders
30,000cycles
Typical Specifications
Items Specifications Encoder Potentiometer
1mA 5V DC 0.05W
Product Line
Power Dual-in-line Package Type TACT SwitchTM CustomProducts
Encoders
Length of Operating operating section section mm
Flat Potentiometer 30
Detent torque mN m
40 20
Number of detent
18
Number of pulse
18
Operating direction
Vertical
Travel of push-on switch mm
1.5
Minimum order unit pcs.
400
Product No.
EC20A1824401 EC20A1820401
Drawing No.
1 2
Length of Operating operating section section mm
Flat 30
Detent torque mN m
Number of detent
Rotational angle
240max
Operating direction
Vertical
Minimum order unit pcs.
400
Product No.
RK203110
Drawing No.
3
Shall be in accordance with individual specifications
Notes
1. For with switch type, only the incremental type is available. 2. All the potentiometer types can be customized. Contact us with the detailed specifications if you have such requirements.
Dimensions
Incremental Type Absolute Type No. Photo EC20A with push-on switch travel 1.5mm Incremental Type 1 Style
Unit:mm
PC board mounting hole dimensions Viewd from mounting face
4.5 6
3.5 Mounting surface
2.5
10
10
30 12
Switch travel 1.5
20.2
5 D 1.5 1.25 3.75 6.25
18.4
8.3 19.2
2.6
1.5
3.5
M9G0.75 1.5
C1
E
7
A C B NCNC NC 3 15.5 ACB (17.8)
o20.2
ACB
51.2 holes
31 D
EC20A without switch type Incremental Type
3.5 Mounting Surface 2.5 8 10
E
30 12
18.4 2.6
M9G0.75
A 1.5 1.25 3.75
1.5
2
3.5
1.5
A C B NCNC NC o3 15.5
B C
3-1 (17.8)
6.25
4.5 6
2.5
3
3.5
M9 0.75 1.5
NC 2 NC 1 NC 3 1.5 15.5 3
1.5
213
10 3-1.2holes
C1
8.3
9
19.2
2.6
RK203 without switch type Potentiometer Type
3.5 Mounting Surface
8 10
30 12
20.2 18.4
3.75 3-1 (17.8)
190
9
1.25 6.25
10 3-1.2 holes
C1
8.3
9
19.2
4.5
o6
9
10
9
9
Encoders
List of Varieties
Type Series EC11G Metal shaft
11mm size
Insulated shaft 20mm size 12mm size
EC12E EC12D
EC11J
EC11K
EC20A/RK203
Standard detent Without detent
With push-on switch
Detector Photo Output Shaft types Operating direction Number of pulse/ Number of detent Push switch Travel mm Optional functions Changeover angle W Dimensions mm D H Manual soldering Soldering Dip soldering Reflow soldering Operating temperature range -30 Maximum operating current Resistive load Output signal
to 85 260 5 , 5 1s Please see P.189 -40 10mA to 85 -30 to 1mA 80 -10 to 5mA 70 -40 to 10mA 85 12 4.5 350 260 5 15 30 Without With 1.5 9 18 15 30 Without With 0.5, 1.5 Incremental Single-shaft Vertical 18 18 Without With 1.5 12/12 24/24 Without 15/30 With 0.5
Push Slide Rotary Encoders Power Dual-in-line Package Type
11.7 14.2 2.0 19.2 10 max. 3s max. ,5 1s 260 5 ,3 1s 12.4 13.2 5 12.5 11.7
5V
Outline specifications Electrical performance Mechanical Environmental performance performance Push-on Switch Specifications
TACT SwitchTM CustomProducts
Output of A and B signals, proportionate to phase difference
A signal OFF ON ON
Output wave
Please see P.191
B signal
OFF
Incremental Type Absolute Type
CW direction
Detent stabillity point When the switch is provided
V1
R
V2
1.5V max.
5V DC R Terminal A Terminal B Output waveform t t V1 V2
Test circuit
Sliding noise
Please see P.191
Encoder Terminal C
ON
OFF ON Sliding direction
u/s
t : Masking time to avoid chattering
Insulation resistance Voltage proof Rotational torque Detent torque Push-pull strength Cold Dry heat Damp heat Circuit number of contacts Travel mm Operating force N Rating Contact esistance Operating life Page
2.5 2
100M
min. 250V DC
10M
At R = 10k Chattering : 3ms max. Bounce : 2ms max. min. 50V DC
10mN m max. 25 15mN m 40 15mN m
At R = 5k Chattering : 3ms max. Bounce : 2ms max. 100M min. 250V DC 300V AC for 1minute 360V AC for 1s.
300V AC for 1minute 7 10
3 4
50V AC for 1minute
7mN m
12
5mN m 100N
40
20mN m
3 2mN m 3 20mN m
5 3mN m 10 5mN m
80N -40 85 60 0.5 3 2 Push-on 1.5 4 2 0.5A 16V DC 1mA 16V DC min. ratings after operating life 20,000times min. 190 3 3 for 240h for 240h
100N 10h 10h 10h
-40 85 60 2
3 3
for 240h for 240h
, 90 to 95% RH for 240h
, 90 to 95%RH for 240h
Single pole and single throw 0.5 0.3 1.5 0.5 0.5 0.3 1.5 0.5 0.5 0.3 42 6 0.5A 16V DC 1mA 16V DC min. ratings 100m 5 2 4 2 5 2
Single pole and single throw Push-on 0.5
1.5 1.0
6
2.5 2
0.1A 5V DC
1mA 5V DC 100m for initial period; 200m after operating life 30,000times min. 192
for initial period; 200m
1,000,000 500,000 1,000,000 100,000 20,000times min. times times times times min. min. min. min. 181 187
177
11mm and 20mm Size Metal Shaft Encoders
Product Specifications
Output Wave
EC11B
EC11B, EC11E, EC11G 30 detents, 15 pulse A signal OFF B signal OFF ON ON
EC11E/EC11G/EC11J/EC11K
The stable detent position cannot be identified in phase B. EC11E 18 detents 9 pulse EC11E 36 detents 18 pulse EC11J, EC11K A signal B signal OFF ON OFF ON
EC111/EC11E Detector
CCW 0 CW
Push Slide
B C A
Detent stabillity point CW direction
CW direction Detent stabillity point
Rotary Encoders
EC11EH
Shaft rotational Direction
A signal B signal C signal OFF ON OFF ON OFF ON
EC20A
Signal A Terminal AC Clockwise B Terminal BC A Terminal AC Counter-clockwise B Terminal BC OFF ON OFF ON OFF ON OFF ON The dotted lines indicate detent positions Output
Power Dual-in-line Package Type TACT SwitchTM CustomProducts
Sliding Noise
EC11B V1 V2 1.5V max.
Test circuit 5V DC t R Terminal A R 5V Terminal B t V1 Output waveform
EC11E/EC11G/EC11J/EC11K
EC111/EC11E
Incremental Type Absolute Type
V2 Encoder Terminal C ON OFF ON
Sliding direction
/s
t : Masking time to avoid chattering
At R 5k Chattering : 2ms max. Bounce : 2ms max.
At R 5k Chattering : 3ms max. Bounce : 2ms max.
EC11EH
Test circuit
EC20A V1 V2 1.5V max.
Test circuit 5V DC t R Terminal A R 5V Terminal B t V1 Output waveform
ABC switch
Encoder Terminal C ON OFF ON
V2
Sliding direction
Test condition
Rotation speed
/s
t : Masking time to avoid chattering
At R = 5k Chattering: 5ms max. Bounce : 5ms max.
At R = 5k Chattering: 8ms max. Bounce : 5ms max.
Attached Parts
EC11B Series
Hexagonal nut 11
2
Unit:mm
12 7.1
Flat washer
0.5
M7 0.75
191

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