Features
RoHScompliant*
HCMOS,CMOSandTTLcompatible
Compact package size
High rotational cycle life
Standard or high force push switch option
Optional detent
EM14 - 14 mm Rotary Optical Encoder w/Switch
Electrical Characteristics
Electrical Output....................................................................................................................................................................................... 2-bit quadrature code
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
Rise/Fall Time........................................................................................................................................................................................................200 ns typical
Power Dissipation..........................................................................................................................................................................................167 mW maximum
Pulse Width (per Channel)....................................................................................................................................................................................180 e typical
Phase Angle (Channel A Leads Channel B, Clockwise Rotation)..........................................................................................................................90 e 45 e
Insulation Resistance @ 500 VDC....................................................................................................................................................1,000 megohms minimum
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 C to +125 C (-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**
Mechanical Characteristics
Mechanical Angle ............................................................................................................................................................................................360 Continuous
Torque
Starting/Running................................................................................................................................................................1.06 N-cm (1.5 oz.-in.) maximum
Detent........................................................................................................................................................................................1.2 N-cm (1.7 oz.-in.) typical
Rotational Life
Non-detent (@ 30 RPM) .......................................................................................................................................1,000,000 cycles (2,000,000 revolutions)
With detent (@ 30 RPM).............................................................................................................................................100,000 cycles (200,000 revolutions)
Switch Life...........................................................................................................................................................................................................100,000 cycles
Switch Actuation Force
Standard.........................................................................................................................................................................................250 gm (8.82 oz.) typical
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
Shaft Axial Structural Strength ......................................................................................................................................................................... 35 lbs. minimum
Mounting Torque...........................................................................................................................................................................2.0 N-m (18 lb.-in.) maximum
Materials and Finishes
Terminals........................................................................................................................................................................................................Sn plated PC pins
Soldering Condition
Manual Soldering ....................................................................................................................96.5Sn/3.0Ag/0.5Cu solid wire or no-clean rosin cored wire
370 C (700 F) max. for 3 seconds
Wave Soldering............................................................................................................................................. 96.5Sn/3.0Ag/0.5Cu solder with no-clean flux
260 C (500 F) max. for 5 seconds
Wash processes.......................................................................................................................................................................................Not recommended
Mounting Hardware
Nut..............................................................................................................................Black annodized brass, hex (metric)/Nickel-plated brass, hex (SAE)
Lockwasher ............................................................................................................................................................ Nickel-plated spring steel, internal tooth
Marking....................................................................................................Manufacturers 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.
*RoHS Directive 2015/863, Mar 31, 2015 and Annex.
WARNING
Specications are subject to change without notice. Users should verify actual device performance in their specic
Cancer and Reproductive Harm
applications. The products described herein and this document are subject to specic legal disclaimers as set forth on the
www.P65Warnings.ca.gov last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
*RoHS COMPLIANTAdditional 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 - L03S2
SWITCH OPTION
MODEL NO. DESIGNATOR
Code Description
EM14 14 mm Rotary Optical Encoder
S Push Switch (Standard)
H Push Switch (High Force)
BUSHING DESIGNATOR N No Switch
Code Description
A 3/8 D x 3/8 L Threaded
RESOLUTION (Pulses Per Revolution)
C 1/4 D x 1/4 L Threaded
Code Description
R 10 mm D x 9.5 mm L Threaded
08 8 PPR
16 16 PPR
DETENT OPTION 32 32 PPR
Code Description 64 64 PPR
0 No Detent
1 32 Detents (Available for
CABLE/CONNECTOR OPTION
8 or 32 PPR only)
Code Description
0 No Cable/Connector
ANTI-ROTATION LUG/BRACKET OPTION
6 Cable with Female Connector
1
Code Description
and stripped/tinned leads
A A/R Lug
6 Cable with Female Connector
2
B Bracket (No hardware/no cable or
on both ends
connector)
12 Cable with Female Connector
3
D None
and stripped/tinned leads
12 Cable with Female Connector
4
on both ends
SHAFT STYLE (See Outline Drawing for Details)
3 Cable with Female Connector and
5
Available w/
stripped/tinned leads
Code Description
Bushing
1.5 Cable with Female Connector and
B 1/4 Dia. Slotted End A
6
stripped/tinned leads
C 1/4 Dia. Flatted End A
2 Cable with Female Connector and
E 1/8 Dia. Slotted End C
7
stripped/tinned leads
R 6 mm Dia. Slotted End R
5 Cable with Female Connector and
M 6 mm Dia. Flatted End R
8
stripped/tinned leads
For other cable and connector options, please contact the factory.
SHAFT LENGTH DESIGNATOR
Code Length (FMS) Available w/Bushing
24 3/4 A, C
TERMINAL CONFIGURATION
28 7/8 A, C
Code Description
20 20 mm R, U
L Axial Multi-Purpose Pin
25 25 mm R, U
R Radial Multi-Purpose Pin
Specications are subject to change without notice.
Users should verify actual device performance in their specic applications.
The products described herein and this document are subject to specic legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.