Datasheet

For more information, please visit the product page.
rev.
DESCRIPTION: rotary encoder
PART NUMBER: EC251AB
ELECTRICAL SPECIFICATIONS
output waveform
output signals
current consumption
output voltage
Square wave
A, B phase
20 mA max.
Vcc ~ 0.5 V min.
0.7 V max.
-0.1 mA max.
5 V dc ± 5%
25
100 Hz
“H”
“L”
output current
supply voltage
output resolution (ppr)
frequency response
MECHANICAL SPECIFICATIONS
max shaft load, radial:
axial:
starting torque
rotational angle
maximum speed
rotational life
weight
1 kgf
1 kgf
0.4 ±0.2 N·cm max. (41 ±20 gf·cm max.)
360° continuous
120 RPM
1,000,000 cycles
20 g
ENVIRONMENTAL SPECIFICATIONS
operating temp
storage temp
humidity
vibration
shock
0° to +60° C
-20° to +80° C
85% RH, no condensation
10 ~ 55 Hz. 1.5 mm, 2 hours
50 G, 6 ms, 3 axes, 3 reps
ORDERING INSTRUCTIONS
EC251X050X
Detent:
A = Without detent
B = With detent
Termination options:
A = Solder holes
B = Connector
C = Cable
D = PC board mount
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383
page
1 of 2
date
08/2008
For more information, please visit the product page.
rev.
page
2 of 2
date
08/2008
DESCRIPTION: rotary encoder
PART NUMBER: EC251AB
OUTPUT CIRCUIT
OUTPUT WAVEFORM
EXTERNAL CIRCUIT
INTERNAL CIRCUIT
(Clockwise rotation viewed from front)
1 +5V
Detent Position
R1
A
R2
EC251X
R3
PI1
2 Ch B
PI2
3 Ch A
+5V
1
74HC14
2
Output B
74HC14
3
Output A
4 GND
B
4
5 NC
R2, R3: 100 k Ω
6 NC
MECHANICAL DRAWING
EC251X050A
25
10
12.5
M9 P=0.75
17
+0
+0
8 - 0.1
Ø6 - 0.1
2
Ø3
14.5
16
3.5
C
4
8
6-ø1
2
10
20
Pin #1
8.2
13
Mounting Hole Dimensions
PCB Footprint
2-Ø2.2
10
14.5
8.1
23.1
2
6-Ø1
ø9.2
EC251X050B
EC251X050D
EC251X050C
20
12.5
JST: 6P-SAN
6
9.4
4.5
JST:
B6B-PH-K-S
1
20
7.4
AWG28
UL1007
9.6
10
8.5
Ø2
150
0.5
Pin #1
1.8
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383
3.5