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