EMS22P

*R
oH
S
CO
M
PL
IA
N
T
Features
■ 3.3 and 5 VDC voltage supply option
■ Resolution: 1024 states
■ PWM Absolute Position
■ Long life
■ Bushing or servo mount
■ High operating speed
■ Non-contacting magnetic technology
■ Highly repeatable
■ Small size
■ Sealed option
■ CMOS and TTL compatible
■ Magnetic technology
EMS22P - Non-Contacting PWM Encoder
Electrical Characteristics
Resolution ................................................................................................................................................................................................................ 1024 states
Insulation Resistance (500 VDC) ......................................................................................................................................................................1,000 megohms
Electrical Travel ........................................................................................................................................................................................................ Continuous
Supply Voltage ........................................................................................................................................................................5.0 VDC ±10 %, 3.3 VDC ±10 %
Supply Current .................................................................................................................................................................................................20 mA maximum
Output Voltage
Low Output Level ................................................................................................................................................................................. Vss+0.4 V maximum
High Output Level................................................................................................................................................................................... Vdd-0.5 V minimum
Output Current
With 4.5 VDC Supply Voltage .......................................................................................................................................................................4 mA maximum
With 3.0 VDC Supply Voltage .......................................................................................................................................................................2 mA maximum
Rise/Fall Time (Incremental Output) ............................................................................................................................................................... 500 ns maximum
Shaft RPM (Ball Bearing) .........................................................................................................................................................................10,000 rpm maximum
Linearity ..............................................................................................................................................................................................................................0.5 %
Accuracy
Nominal ..........................................................................................................................................................................................................±0.7 ° or better
Worst Case................................................................................................................................................................................................................... ±1.4 °
Output Transition Noise................................................................................................................................................................................... 0.12 ° RMS max.
Environmental Characteristics
Operating Temperature Range........................................................................................................................................ -40 ºC to +125 ºC (-40 °F to +257 °F)
Storage Temperature Range ........................................................................................................................................... -55 °C to +125 °C (-67 °F to +257 °F)
Humidity ....................................................................................................................................................................MIL-STD-202, Method 103B, Condition B
Vibration .............................................................................................................................................................................................................................. 15 G
Shock .................................................................................................................................................................................................................................. 50 G
Rotational Life
S Bushing (@1,000 rpm)................................................................................................................................................................. 100,000,000 revolutions
T & W Bushings (@1,000 rpm with 250 g side load) ........................................................................................................................ 50,000,000 revolutions
IP Rating ............................................................................................................................................................................................................................. IP 65
Mechanical Characteristics
Mechanical Angle ............................................................................................................................................................................................ 360 ° Continuous
Torque
Starting .................................................................................................................................................................................... 43 ±21 g-cm (0.6 ±0.3 oz-in.)
Running ................................................................................................................................................................................... 29 ±14 g-cm (0.4 ±0.2 oz-in.)
Mounting Torque.........................................................................................................................................................................................203 N-cm (18 lb.-in.)
Shaft End Play......................................................................................................................................................................0.30 mm (0.012 ”) T.I.R. maximum
Shaft Radial Play ..................................................................................................................................................................0.12 mm (0.005 ”) T.I.R. maximum
Weight .............................................................................................................................................................................................................. 11 gms. (0.4 oz.)
Terminals ......................................................................................................................................................................................... Axial, radial or ribbon cable
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 10 seconds
Wash processes ....................................................................................................................................................................................... Not recommended
Marking.................................................................................................................................... Manufacturer’s trademark, name, part number, and date code.
Hardware ....................................................................One lockwasher and one mounting nut supplied with each encoder, except on servo mount versions.
Pin Configuration
Output Type
PWM
Pin 1
PWM Signal
Pin 2
GND
Pin 3
GND
Pin 4
GND
Pin 5
VCC*
* Can be 5 or 3.3 VDC depending on the version.
** Active low chip select pin; if not used connect pin 6 to GND.
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device
performance may vary over time.
Users should verify actual device performance in their specific applications.
Pin 6
CS**
Applications
■ Material handling equipment
■ Medical
■ Brushless DC motor commutation
■ Office equipment
■ Robotics
■ Audio and broadcast equipment
■ Automotive
■ Industrial automation
■ Petroleum refinery
EMS22P - Non-Contacting PWM Encoder
Output Type Waveform and Variant Table
Angle
PW MIN
PWM Output
Parameter
0 deg
(Pos 0)
Symbol
Type
Unit
Note
PWM frequency
fPWM
0.9756
KHz
MIN pulse with
PWMIN
1
μs
Position 0 Angle 0 °
MAX pulse with
PWMAX
1024
μs
Position 1023 Angle 359.65 °
Signal period: 1025 μs
1
1025
PW MAX
Analog output using an external low pass filter
Vcc
t on
0
t off
512
1025
359.65 deg
(Pos 1023)
0V
0°
360 °
1/f PWM
Position = t on * 1025/(t on + t off) - 1
Recommended Filter
R1
R2
analog out
PWM
C1
C2
VSS
Simple Passive 2nd Order Low Pass Filter
R1, R2 ≥ 4.7K Ohms
C1, C2 ≥ 1 μF / 6 V
R1 should be ≥ 4.7K ohms to avoid loading of the PWM output.
Larger values of Rx and Cx will provide better filtering and less
ripple, but will also slow down the response time.
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
Consult factory for options not shown, including:
• Wire lead or cable options • Special shaft/bushing sizes and features
• Connectors
• Special performance characteristics
• Non-standard resolutions
• PCB mounting bracket
EMS22P - Non-Contacting PWM Encoder
Product Dimensions
Shaft Style D (Bushing T)
13.89 ± .38
(.547 ± .015)
15.88 ± .25
(.625 ± .010)
7.94 ± .012
(.313 ± .005)
1.57 ± 0.12
(.062 ± .005)
3/8-32 UNEF-2A THD
DIA.
10.29 ± 0.12
(.405 ± .005)
DIA.
3.17 +.00/-.01
(.1247 +.0000/-.0003)
21.21 ± .25
(.835 ± .010)
.51 ± .03
(.020 ± .001)
6 PLCS.
2.79
(.110)
AR LUG
1.18 ± 0.12
(.047 ± .005)
0.66 ± 0.12
X
(.026 ± .005)
HIGH (FMS)
9.53
(.375)
R
22.23 ± .78
(.875 ± .031)
4.00
(.157)
2.01
(.079)
5 PLCS.
.51 ± .03
(.020 ± .001)
6 PLCS.
7.95 ± .012
(.313 ± .005)
10.67 ± 0.12
(.420 ± .005)
DIA.
3.18 ± 0.12
(.125 ± .005)
DIA.
PANEL LAYOUT
Shaft Style B (Bushing S)
13.89 ± .38
(.547 ± .015)
15.88 ± .25
(.625 ± .010)
7.94 ± 0.12
(.313 ± .005)
1.57 ± 0.12
(.062 ± .005)
3/8-32 UNEF-2A THD
DIA.
6.34
(0.249)
10.29
(.405)
DIA.
21.21 ± .25
(.835 ± .010)
.51 ± .03
(.020 ± .001)
6 PLCS.
2.79
(.110)
9.53
(.375)
22.23 ± .78
(.875 ± .031)
4.00
(.157)
2.01
(.079)
5 PLCS.
AR LUG
1.18 ± 0.12
(.047 ± .005)
0.66 ± 0.12
X
(.026 ± .005)
HIGH (FMS)
R
7.95 ± 0.12
(.313 ± .005)
.51 ± .03
(.020 ± .001)
6 PLCS.
10.67 ± 0.12
(.420 ± .005)
DIA.
DIMENSIONS:
MM
(INCHES)
3.18 ± 0.12
(.125 ± .005)
DIA.
PANEL LAYOUT
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
EMS22P - Non-Contacting PWM Encoder
Product Dimensions (Continued)
Shaft Style D (Bushing W)
9.53
(.375)
13.89 ± .38
(.547 ± .015)
1.57
(.062)
15.88 ± .25
(.625 ± .010)
DIA.
3.17 +.00/-.01
(.1247 +.0000/-.0003)
22.23
(.875)
DIA.
21.21 ± .25
(.835 ± .010)
2.74
(.108)
19.05
(.75)
DIA.
.51 ± .03
(.020 ± .001)
6 PLCS.
2.01
(.079)
5 PLCS.
.51 ± .03
(.020 ± .001)
6 PLCS.
1.57
(.062)
4.00
(.157)
1.57
(.062)
22.23 ± .78
(.875 ± .031)
Cable Assembly
CONNECTOR
2.00 MM PITCH, 6 CIRCUITS
2 PLCS.
254.0 ± 6.35
(10.00 ± 0.25)
13.97
(0.55)
2 PLCS.
CIRCUIT #1
25.4
(1.0)
MAX.
2 PLCS.
FLAT CABLE
2.0 MM PITCH ROUND CONDUCTOR
24 AWG (7X32) STRANDED, TOP COAT
6 CIRCUITS, P.V.C. INSULATION
DIMENSIONS:
PIN 1 IDENTIFICATION STRIPE
CIRCUIT #1
MM
(INCHES)
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
3312 - 2- mm
SMD Trimming
Potentiometer
EMS22P
Non-Contacting
PWM Encoder
How To Order
BOURNS EMS22 22 MM NON-CONTACTING PWM ENCODER
E M S 2 2 P 5 0 - B 2 8 - L S 6
INDEX CHANNEL
Code Description
0
No Index
VOLTAGE
SUPPLY
Code Description
3.3 VDC
3
5 VDC
5
SHAFT LENGTH
DESIGNATOR*
Code Description
1/2 " Long
16
5/8 " Long
20
7/8 " Long
28
25 mm Long
25
(Available with
D Bushing Only)
SHAFT STYLE
Code
B
C
D
R
M
Available With
Description
Bushings (Code)
1/4 " Dia., Plain End
S
1/4 " Dia., Flatted End
S
1/8 " Dia., Plain End
T, W
6 mm Dia., Slotted End
D
6 mm Dia., Flatted End
D
OUTPUT TYPE
Code Description Notes
See Note 1
CW PWM
P
See Note 2
CCW PWM
R
TERMINAL
CONFIGURATION**
Code Description
L
Axial, MultiPurpose Pin
Rear Ribbons
M
Cable with
Connector
Rear Ribbons
W
Cable No Connector
RESOLUTION
Code
States
6
1024
BUSHING DESIGNATOR
Code Description
S
3/8 " D X 3/8 " L Threaded
(Single Ball Bearing)
T
3/8 " D X 3/8 " L Threaded
(Dual Ball Bearing)
Servo Mount 7/8 " D
W
(Dual Ball Bearing)
9 mm D X 7.94 mm L Threaded
D
(Single Ball Bearing)
* Shaft length measured from mounting surface.
** Standard ribbon cable is 10 inches long. Consult factory for other lengths.
Note 1: (P) t on increases from 1 to 1025 with CW rotation of the shaft.
Note 2: (R) t on increases from 1 to 1025 with CCW rotation of the shaft.
REV. 05/14
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
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