Series 291
Precision, Long-life 12mm Optical Encoder
▪
Available with 4, 6, 8, 24,32, 64 Pulses per Revolution
▪
Optional Momentary Switch
▪
Multiple options for terminations, resolution,
cable lengths, and operating voltage
Description
The 291 Series allows versatility in design applications by providing
highly reliable, precise digital output and long rotational life with our non-contacting design. This product
provides flexibility in resolution, power consumption, and operating temperatures. The options of Schmitt
trigger, detents, momentary switch, shaft & bushing length, dual shaft, termination styles, torque, operating
voltage, and IP ratings provide flexibility to meet your exacting design requirements.
Ordering Information
Series
291
2022124
1
Bushing
Termination Length
V1
2
Shaft
Length
22
1
Shaft
Output
Operating
Trim C Combination Voltage
F
E
S
Switch
B
Code
A
B
Schmitt Trigger
& Locating Lug
RTTT T
T T
T
TTT
Spec.
T
None
T
Momentary
TSS
(not for 64 PPR)
0
832
Code
F
S
A
A
Code
V1
Termination
.050” pitch pins
Rear facing
.132” length(not for 64 PPR)
.10”
pitch
pins
Rear facing
.236” length
4” ribbon cable
With .050” pitch
connector terminals (not
for 64 PPR)
5” ribbon cable
With .050” pitch
connector terminals (not
for 64 PPR)
6” ribbon cable
With .050” pitch
connector terminals (not
for 64 PPR)
Code
Shaft Length “L”
Spec.
Flat
Slotted
P1
*C4
Single shaft structure
22
.687”
24 .875”
Dual shaft structure
DD
Outer shaft: .685”
Inner shaft: 1.059”
(Not available with locating
lug, 32 and 64 PPR, see page
8 for additional details)
Output
832
624
416
5 positions
800
600
400
X00
Combination
8 PPR, 32 Detents
6 PPR, 24 Detents
4 PPR, 16 Detents
8 PPR, No Detents
6 PPR, No Detents
4 PPR, No Detents
24 PPR, No Detents
(only available with
Schmitt trigger)
24 PPR, 24 Detents
(only available with
Schmitt trigger)
32 PPR, No Detents
(only available with
Schmitt trigger)
64 PPR, No Detents
(only available with
Schmitt trigger)
Code
BLANK
Spec.
Without Schmitt trigger,
With locating lug (not for
32, 64 PPR)
Without Schmitt trigger,
Without locating lug (not
for 32, 64 PPR)
With Schmitt trigger,
Without locating lug
With Schmitt trigger,
With locating lug
A
S
B
*C5
*C6
X24
Y00
Code
A
B
Spec.
5.0V
3.3V (not for
64 PPR)
Code
0
D
Bushing Length
“B”
.312” For single
shaft construction
.256” For dual
shaft construction
(not for 32, 64 PPR)
Z00
Note: * Cable connector for C4, C5, C6 is AMP P/N 215083-6 or Equivalent
2017-07-24 Rev. D
www.ctscorp.com
Page 1 of 13
©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test
equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.
Series 291
Compact Optical Encoder
Electrical Specifications
Encoder Function
Parameter
Voltage (4, 6, 8, 24, 32 PPR)
Voltage (64 PPR)
2-Bit Quadrature
Channel A leads
Channel B by 90°
during clockwise
rotation
5.0 VDC
3.3 VDC
5.0 VDC
3.3 VDC
4, 6, 8, 24, 32, 64
Conditions &
Remarks
Min
4.75
3.175
4.5
Nominal
5.0
3.3
5.0
Max
5.25
3.425
5.5
Unit
VDC
VDC
Output Code
Sink Current
Power Consumption
Resolution
2.0mA
1.0mA
150
80
mW
mW
Pulses per
Revolution
Mechanical and Environmental
Manual Soldering
RoHS
Shock :
Vibration :
IP Rating (4, 6, 8, 24, 32 PPR):
IP Rating (64 PPR):
Packaging :
Operating Temperature:
Storage Temperature:
Storage Temperature:
(32, 64 PPR)
Rotational Life
Push-Pull Strength of Shaft
(4,6,8,24, 32 PPR)
(64 PPR)
Terminal Pull-out Strength
Rotational Torque
(4, 6, 8, 24 PPR)
(32 PPR)
(64 PPR)
Rotational Torque
Detent Options
Maximum temperature of 350°C for 5 seconds
Lead-Free. Fully compliant to RoHS Directive
Per MIL-STD-883F ( 100G’s)
Per MIL-STD-883F
( 15G’s)
IP 50
IP 40
Standard anti-static tray packaging
-40°C to +85°C
-55°C to +100°C
-40°C to +100°C
No detent @ 30 RPM
With detent @ 30 RPM
10 seconds
10 seconds
10 seconds
Running
Running
Running
24 Detents
16, 32 Detents
0, 16, 24, 32
3 Million Cycles
1 Million Cycles
20 kg
13.6 kg
6 kg
10 to 30 gf-cm
30 gf-cm Max.
100 gf-cm Max.
90 to 190 gf-cm
50 to 150 gf-cm
2017-07-24 Rev. D
www.ctscorp.com
Page 2 of 13
©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test
equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.
Series 291
Compact Optical Encoder
Optional Momentary Switch Function:
Parameter
Switch contact resistance
Switch rating
Switch travel
Actuation Force
Switch Life
Switch Life
Standard
5 VDC @10 mA
0.25
400
1 Million
0.5
510
0.75
620
mm
grams
Actuations
Conditions & Remarks
Min.
Nominal
Max
10
Unit
ohms
Consult CTS for custom life requirements
Mechanical Specifications
Figure 1
–
291V1…
–
Without Schmitt Trigger, With Left Locating Lug, .050” Pitch Pins Facing Rear
2017-07-24 Rev. D
www.ctscorp.com
Page 3 of 13
©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test
equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.
Series 291
Compact Optical Encoder
Figure 2
–
291V1…S
–
With Schmitt Trigger, Without Locating Lug,
.050” Pitch Pins Facing Rear
2017-07-24 Rev. D
www.ctscorp.com
Page 4 of 13
©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test
equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.
Series 291
Compact Optical Encoder
Figure 3
– 291V1…A –
Without Schmitt Trigger, Without Locating Lug, .050”
Pitch Pins Facing
Rear
2017-07-24 Rev. D
www.ctscorp.com
Page 5 of 13
©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test
equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.
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