EC45A ALPS [ALPS ELECTRIC CO.,LTD.], EC45A Datasheet - Page 2

• Manufacturer Part Number: EC45A
• Description: 45mm Size Encoder/Potentiometer
• Manufacturer: ALPS [ALPS ELECTRIC CO.,LTD.]

1. The
2. The
Code
No.
Gray
3
Output Wave （ Incremental Type ）
Shaft rotational
ounter-clockwise
Dimensions
Standard Codes （ Absolute Type ）
Circuit Diagram （ Potentiometer Type ）
Direction
direction
direction
lockwise
RK45A
Potentiometer Type
●
●
marks shows the ON position.
marks : Connections between terminals and the common terminal （terminal No. =1） are ON.
Number of
positions
Photo
1
4
2
3
5
6
A
B
A
B
（
（
（
（
Terminal 1Ð3
Terminal 2Ð3
Terminal 1Ð3
Terminal 2Ð3
Signal
●
1
2
●
●
2
）
）
）
）
CW
●
The dotted lines indicate detent positions
3
OFF
ON
OFF
ON
OFF
ON
OFF
ON
●
●
4
●
●
●
5
3
●
●
6
Output
Hollow Shaft Type Devices
●
45mm Size Encoder/Potentiometer
7
ø44.5
ø35.6
34.8
●
●
8
●
●
●
9
10
●
●
●
●
11
●
●
●
Style
12
●
●
13
●
●
●
V
14
●
●
1
Sliding Noise （ Incremental Type ）
＝V
15
9
●
20
Measurement condition：Rotation speed 360˚/s
2
＝2.5V max.
16
●
●
9
7
R
17
●
●
●
Test circuit
At R = 10kΩ
3.5
Chattering : 3ms max.
Bounce
Terminal 1
18
●
●
●
●
3.5
19
●
●
●
20
●
●
●
●
R
Encoder
Terminal 2
5V DC
Terminal 3
21
●
●
●
●
●
（Viewed from switch mounting face）
PC board mounting hole dimensions
: 2ms max.
22
●
●
●
●
23
●
●
●
24
●
●
t : Masking time to avoid chattering
1
2
3
Output waveform
25
●
●
●
ON
EC45A/RK45A
18
26
●
●
●
●
t
OFF
44.4
42.8
36
3
27
●
●
●
2.6
t
ON
28
●
●
Unit:mm
29
●
●
●
V
V
1
2
30
●
●
31
31
●
Series
Hollow Shaft
Type Devices
Encoder
Type
Potentiometer
Type
461