Resolution .......................................................................................................................................................................... 8 to 64 pulses per revolution (PPR)
Supply Voltage (VCC) ............................................................................................................................................................................... 5.0 VDC ± 0.25 VDC
Supply Current (ICC)........................................................................................................................................................................................26 mA maximum
Output Voltage
Low (VCE(sat)), per Channel .................................................................................................................................... 800 mV maximum at I(SINK) = 25 mA
High (VO(HI)), per Channel..................................................................................................................................... 4.0 VDC minimum @ VCC = 4.75 VDC
Output Current I(SINK), per Channel...............................................................................................................................................................25 mA maximum
Power Dissipation..........................................................................................................................................................................................167 mW maximum
Operating RPM ....................................................................................................................................................................................................120 maximum
Switch Power Rating ..............................................................................................................................................12 VDC / 20 mA (600 ohms minimum load)
Switch Contact Resistance ........................................................................................................................................................................200 ohms maximum
Environmental Characteristics
Operating Temperature Range @ 5.0 VDC ......................................................................................................................-40 °C to +70 °C (-40 °F to +158 °F)
Storage Temperature Range........................................................................................................................................... -55 ºC to +125 ºC (-67 °F to +257 °F)
Vibration ..............................................................................................................................................................................................................................15 G
Shock ..................................................................................................................................................................................................................................50 G
Humidity ......................................................................................................................................................................MIL-STD-202, Method 103, Condition B
Flammability ............................................................................................................................................................................................ Conforms to UL 94HB
IP Rating...........................................................................................................................................................................................................................IP 54**
Starting/Running................................................................................................................................................................1.06 N-cm (1.5 oz.-in.) maximum
With detent (@ 30 RPM).............................................................................................................................................100,000 cycles (200,000 revolutions)
Switch Life ...........................................................................................................................................................................................................100,000 cycles
High Force....................................................................................................................................................................................850 gm (29.98 oz.) typical
Switch Travel
Standard..........................................................................................................................................................................................................0.04 in. typical
High Force.....................................................................................................................................................................................................0.025 in. typical
Shaft Radial Play..........................................................................................................................................................................................0.005 in. maximum
Mounting Torque...........................................................................................................................................................................2.0 N-m (18 lb.-in.) maximum
Materials and Finishes
Terminals ........................................................................................................................................................................................................Sn plated PC pins
Lockwasher ............................................................................................................................................................ Nickel-plated spring steel, internal tooth
Marking....................................................................................................Manufacturer’s symbol, model number, product code, terminal style and date code
Standard Packaging......................................................................................................................................................... Anti-static plastic tube (25 pcs./tube)
**When device is mounted by normal mounting means.
WARNING
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
*RoHS Directive 2015/863, Mar 31, 2015 and Annex.
Specifications are subject to change without notice. Users should verify actual device performance in their specific
applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the
last page of this document, and at
www.bourns.com/docs/legal/disclaimer.pdf.
Additional Features
■
Splashproof shaft seal
■
Recommended for human/machine interface applications (HMI)
■
Cable/connector option
■
Optional bracket
EM14 - 14 mm Rotary Optical Encoder w/Switch
Part Numbering System
E M 1 4 A 0 D - C 2 4
-
L 0 3 2 S
MODEL NO. DESIGNATOR
EM14 14 mm Rotary Optical Encoder
BUSHING DESIGNATOR
Code Description
3/8 ˝ D x 3/8 ˝ L Threaded
A
1/4 ˝ D x 1/4 ˝ L Threaded
C
10 mm D x 9.5 mm L Threaded
R
DETENT OPTION
Code Description
0
No Detent
1
32 Detents (Available for
8 or 32 PPR only)
ANTI-ROTATION LUG/BRACKET OPTION
Code Description
A
A/R Lug
B
Bracket (No hardware/no cable or
connector)
D
None
SHAFT STYLE (See Outline Drawing for Details)
Code
B
C
E
R
M
Description
1/4 ˝ Dia. Slotted End
1/4 ˝ Dia. Flatted End
1/8 ˝ Dia. Slotted End
6 mm Dia. Slotted End
6 mm Dia. Flatted End
Available w/
Bushing
A
A
C
R
R
Code
S
H
N
SWITCH OPTION
Description
Push Switch (Standard)
Push Switch (High Force)
No Switch
RESOLUTION (Pulses Per Revolution)
Code Description
8 PPR
08
16 PPR
16
32 PPR
32
64 PPR
64
CABLE/CONNECTOR OPTION
Code Description
No Cable/Connector
0
6 ˝ Cable with Female Connector
1
and stripped/tinned leads
6 ˝ Cable with Female Connector
2
on both ends
12 ˝ Cable with Female Connector
3
and stripped/tinned leads
12 ˝ Cable with Female Connector
4
on both ends
3 ˝ Cable with Female Connector and
5
stripped/tinned leads
1.5 ˝ Cable with Female Connector and
6
stripped/tinned leads
2 ˝ Cable with Female Connector and
7
stripped/tinned leads
5 ˝ Cable with Female Connector and
8
stripped/tinned leads
For other cable and connector options, please contact the factory.
TERMINAL CONFIGURATION
Code Description
L
Axial Multi-Purpose Pin
R
Radial Multi-Purpose Pin
SHAFT LENGTH DESIGNATOR
Code Length (FMS)
Available w/Bushing
24
3/4 ˝
A, C
28
7/8 ˝
A, C
20
20 mm
R, U
25
25 mm
R, U
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at
www.bourns.com/docs/legal/disclaimer.pdf.
EM14 - 14 mm Rotary Optical Encoder w/Switch
Product Dimensions
MOUNTING
SURFACE
14.25
(0.561)
F
4.76
(.187)
DIA.
0.457 ± 0.026
(.018 ± .001)
METAL SHAFT
(SEE TABLE FOR OPTIONS)
METAL BUSHING
(SEE TABLE FOR OPTIONS)
2.08
TYP.
(.082)
"R" PIN STYLE
1.52
(.060)
"R" PIN STYLE
TYP.
TYP.
1.75
(.069)
"L" PIN STYLE
L
9.53
(.375)
10.03
(.395)
3.18
TYP.
(.125)
"L" PIN STYLE
14.76
(.581)
8.00
(.315)
1.19
.79
R
X
HIGH
(.047) (.031)
ANTI-ROTATION BOSS
(OPTIONAL)
Shaft / Flat Length Dimensions
"A" Style Bushing - Flatted Shafts
L
F
9.53
(.375)
F
"R" Style Bushing - Flatted Shafts
L
9.5
(.374)
"C" Style Bushing - Slotted Shafts
1.52
(.060)
L
6.35
(.250)
4.76
(.187)
SHAFT
DIA.
6.35
(.250)
BUSHING
DIA.
9.52
(.375)
4.42
(.174)
3/8-32 UNEF-2A
SHAFT LENGTH FLAT LENGTH
"L"
"F"
19.05
7.94
(.750)
(.313)
22.22
9.52
(.875)
(.375)
SHAFT
DIA.
6.0
(.236)
0.79
(.031)
M10 x 0.75-6 g
BUSHING
DIA.
10.0
(.394)
SHAFT LENGTH FLAT LENGTH
"L"
"F"
20.0
7.0
(.787)
(.275)
25.0
12.0
(.984)
(.472)
SHAFT
DIA.
3.17
(.125)
1/4-32 UNEF-2A
BUSHING
DIA.
6.35
(.250)
SHAFT LENGTH
"L"
19.05
(.750)
22.22
(.875)
"A" Style Bushing - Slotted Shafts
1.8
(.071)
L
9.53
(.375)
"R" Style Bushing - Slotted Shafts
1.8
(.071)
L
9.5
(.374)
DIMENSIONS:
MM
(INCHES)
0.99
(.040)
SHAFT
DIA.
6.35
(.250)
3/8-32 UNEF-2A
BUSHING
DIA.
9.52
(.375)
SHAFT LENGTH
"L"
19.05
(.750)
22.22
(.875)
0.99
(.040)
SHAFT
DIA.
6.0
(.236)
M10 x 0.75-6 g
BUSHING
DIA.
10.0
(.394)
SHAFT LENGTH
"L"
20.0
(.787)
25.0
(.984)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at
www.bourns.com/docs/legal/disclaimer.pdf.
EM14 - 14 mm Rotary Optical Encoder w/Switch
Cable/Connector Options
Cable Assembly, Connector on One End
STRIPPED AND TINNED
100 % MATTE TIN
123456
CONNECTOR
PIN 1 -
RED STRIPE
6.0
1.0
x
(.236) (.039)
RIBBON CABLE
6x28 AWG x 1.25 PITCH
(.049)
REF.
8.0
(.315)
1.25
x
PITCH RECEPTACLE
(.049)
.457
FOR (.018) DIA. PINS
HDW.
NO.
H-290-1
DESCRIPTION
CABLE ASSEMBLY,
CONNECTOR ON BOTH ENDS
CABLE ASSEMBLY,
CONNECTOR ON ONE END
“A” DIM.
152.4 ± 5.0
(6.0 ± .197)
304.8 ± 5.0
(12.0 ± .197)
H-290-2
2.9
(.114)
3.5 ± 0.2
(.138 ± .008)
2.54 ± 0.4
(.100 ± .016)
A
6.0 ± 0.2
(.236 ± .008)
H-290-3
304.8 ± 5.0
CABLE ASSEMBLY,
CONNECTOR ON BOTH ENDS
(12.0 ± .197)
8.75 ± 0.2
(.344 ± .008)
H-290-4
CABLE ASSEMBLY,
CONNECTOR ON ONE END
RIBBON CABLE, 28 AWG,
CONNECTOR ON ONE END
RIBBON CABLE, 28 AWG,
CONNECTOR ON ONE END
RIBBON CABLE, 28 AWG,
CONNECTOR ON ONE END
RIBBON CABLE, 28 AWG,
CONNECTOR ON ONE END
152.4 ± 5.0
(6.0 ± .197)
76.2 ± 5.0
(3.0 ± .197)
38.1 ± 5.0
(1.5 ± .197)
50.8 ± 5.0
(2.0 ± .197)
127 ± 5.0
(5.0 ± .197)
Cable Assembly, Connector on Both Ends
RIBBON CABLE
6x28 AWG x 1.25 PITCH
(.049)
654321
2 x CONNECTOR
PIN 1 - RED STRIPE
x
6.0
1.0
x
(.236) (.039)
H-290-5
1.25
PITCH RECEPTACLE
(.049)
.457
FOR (.018) DIA. PINS
123456
H-290-6
H-290-7
H-290-8
A
Terminal Configurations
Radial (shown with optional mounting bracket)
14.99 ± .13
(.590 ± .005)
Recommended PCB Layout
DIA.
1.73 ± .10
(.068 ± .004)
2 PLCS.
DIA.
.64
6 PLCS.
(.025)
GROUND
CHANNEL “A”
MOMENTARY
SWITCH
CHANNEL “B”
POWER
7.87 ± .08
(.310 ± .003)
1.27 ± .13
(.050 ± .005)
5 PLCS.
14.76 ± .25
(.581 ± .010)
15.16 ± .25
(.597 ± .010)
2.62 ± .38
(.103 ± .015)
17.17
REF.
(.676)
1.60
(.063)
REF.
PCB
THICKNESS
1.5
WIDE
(.059)
0.381
X
THICK
(.015)
7.87
(.310)
REF.
1.24
(.049)
Axial (shown with optional mounting bracket)
14.99 ± .25
(.590 ± .010)
Recommended PCB Layout
14.61
(.575)
DIA.
1.73 ± .10
(.068 ± .004)
2 PLCS.
6.25 ± .08
(.246 ± .003)
1.27 ± .13
(.050 ± .005)
5 PLCS.
1.22
(.048)
10.57
(.416)
REF.
6.25
(.246)
GROUND
CHANNEL “A”
MOMENTARY
SWITCH
CHANNEL “B”
POWER
DIA.
.64
(.025)
6 PLCS.
2.49 ± .38
(.098 ± .015)
17.17
(.676)
1.60
(.063)
REF.
PCB THICKNESS
DIMENSIONS:
MM
(INCHES)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at
www.bourns.com/docs/legal/disclaimer.pdf.
EM14 - 14 mm Rotary Optical Encoder w/Switch
Electrical Block Diagram
–
Ground
High
CHANNEL A
Quadrature Output
CW
90 °e ± 45 °e
Low
High
CHANNEL B
Low
180 °e
1 pulse width
A
IRED
Channel A
1
10k
Opto
ASIC
10k
Switch Terminal
32 DETENT / 8 PPR
2
Switch Terminal
CHANNEL A
CHANNEL B
CW
+
Power
B
Channel B
32 DETENT / 32 PPR
Terminal Diagram
CW
High
CHANNEL A
CHANNEL B
Low
High
Low
CHANNEL "A"
GROUND
CHANNEL "B"
Detent Range
Nominal Detent
Position
A12 +B
1. Nominal detent position occurs when both Channel A and B are in
low states.
2. Channel A leads Channel B in CW direction and lags in CCW
direction.
TYP. 1.27
(.050)
POWER
MOMENTARY SWITCH
Asia-Pacific:
Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA:
Tel: +36 88 885 877 • Email: eurocus@bourns.com
The Americas:
Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
REV. 09/19
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at
