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 AÐC
）
（
Clockwise
B Terminal BÐC
）
（
A Terminal AÐC
）
（
Counter-clockwise
Detent position
CW direction
OFF
ON
OFF
ON
OFF
ON
OFF
Output
Power
Dual-in-line
Package Type
TACT Switch
TM
Custom-
Products
B Terminal BÐC
）
（
ON
The dotted lines indicate detent positions
Sliding Noise
EC11B
V
1
＝V
2
＝1.5V
max.
Test circuit
5V DC
t
R
Terminal A
R
5V
Terminal B
t
V
1
Output waveform
EC11E/EC11G/EC11J/EC11K
EC111/EC11E
Incremental
Type
Absolute
Type
V
2
Encoder
Terminal C
ON
OFF
ON
Sliding direction
Measurement condition：Rotation speed 360˚/s
t : Masking time to avoid chattering
At R
＝
5kΩ
Chattering : 2ms max.
Bounce
: 2ms max.
At R
＝
5kΩ
Chattering : 3ms max.
Bounce
: 2ms max.
EC11EH
Test circuit
R
R
Terminal A
R
Terminal B
5V DC
Terminal C
R
Terminal A
R
EC20A
V
1
＝V
2
＝1.5V
max.
Test circuit
5V DC
t
Terminal B
t
V
1
5V
Output waveform
ABC switch
Encoder
ON
OFF
ON
V
2
Terminal D
/s
Test condition Rotation speed
360°
Terminal C
Sliding direction
Measurement condition：Rotation speed 360˚/s
t : Masking time to avoid chattering
At R = 5kΩ
Chattering: 5ms max.
Bounce
: 5ms max.
At R = 5kΩ
Chattering: 8ms max.
Bounce
: 5ms max.
Attached Parts
EC11B Series
11
Unit:mm
Hexagonal nut
2
¿12
¿7.1
Flat washer
0.5
M7
×
0.75
191
ALPS [ ALPS ELECTRIC CO.,LTD. ]
