4 - 5
2/5/14
CTS Electrocomponents
www.ctscorp.com
? 2014 CTS Corporation. All rights reserved. Information subject to change.
ELECTRIC CIRCUIT AND WAVEFORM
Standard Quadrature 2-Bit Code
8 PPR/ 32 DETENTS
POWER
GROUND
SWITCH TERMINAL
5
3
2
CHANNEL B
CHANNEL A
SWITCH TERMINAL
4
6
PIN#
* Require pull-up resistors (2.2K or 4.7K Ω)
for application circuit
Nominal
Detent
Position
POSITION NUMBER
1. 8 PPR/32 detents is shown
2. Code repeats every 4 positions
3. Channel A Leads Channel B in CW direction
and lags in CCW direction
1
3
CW
6
4
HIGH
HIGH
2
5
1 PULSE
1
R*
R*
CHANNEL A
CHANNEL B
TYPE 291C-S
2-Bit Encoder With Schmitt Trigger, with Cable and Connector
.250
6.35
3/8-32 UNEF-2A
THREADS
2
1
4
3
6
5
.291
7.40
.250
±0.002
6.35 ±0.05
CABLE LENGTH
.144
3.65
CONNECTOR IS AMP
P/N215083-6
OR EQUIVALENT
.488
12.40
CENT.
.541
13.75
.066
±0.002
1.68 ±0.05
.218
±0.002
5.53 ±0.05
.520
13.20
CENT.
.250
6.35
.417
10.58
.154
±0.002
3.90 ±0.05
.218±.002
5.53±
0.05
B
L
±.014
± 0.35
See Termination Options
( WITHOUT SCHMITT TRIGGER DESIGN)
ELECTRIC CIRCUIT AND WAVEFORM
( WITH SCHMITT TRIGGER DESIGN)
POWER
GROUND
SWITCH TERMINAL
3
5
1
SWITCH TERMINAL
2
CHANNEL B
CHANNEL A
4
6
PIN #
* Schmitt triggers and pull-up resistors (4.7KΩ) are integrated
inside
CTS optical encoder, so it’s not necessary to have external p
ull-up
resistors for application circuit.
* It can work well if application circuit still adopts external
pull-up
resistors (2.2KΩ).
4.7KΩ
4.7KΩ
Standard Quadrature 2-Bit Code
LOW
LOW
8 PPR/ 32 DETENTS
CW
CHANNEL B
HIGH
CHANNEL A
HIGH
POSITION NUMBER
1. 8 PPR/32 detents is shown
2. Code repeats every 4 positions
3. Channel A Leads Channel B in CW direction
and lags in CCW direction
1 PULSE
4
3
1
6
2
5
Nominal
Detent
Position
GENERAL TOLERANCE
:
±
.010 inch
±
0.25 mm
LOW
LOW
LOW
LOW
24 PPR/ 24 DETENTS
CW
CHANNEL B
HIGH
CHANNEL A
HIGH
1 PULSE
1
POSITION NUMBER
1. 24 PPR/24 detents is shown
2. The nominal detent position is located
when both Channel A and B are low
3. Channel A Leads Channel B in CW
direction and lags in CCW direction
Nominal
Detent Position
2
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