Danfoss EMD Operating guide
User Manual
Orbital Motor
EMD Speed Sensor
www.danfoss.com
User Manual
Orbital Motor, EMD Speed Sensor
Revision history |
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Changed |
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June 2021 |
Changed document number from 'L1017819' to 'AQ152886482063' and removed obsolete |
0301 |
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motors |
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April 2015 |
CG150 updated to CG150-2 |
BD |
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January 2015 |
Various updates |
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April 2014 |
Various updates |
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March 2014 |
Converted to Danfoss layout - DITA CMS |
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May 2012 |
Conversion Diagram text updated |
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May 2012 |
First edition |
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2 | © Danfoss | June 2021 |
AQ152886482063en-000301 |
User Manual |
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Orbital Motor, EMD Speed Sensor |
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Contents |
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Product Overview |
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Description.......................................................................................................................................................................................... |
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General data |
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EMD Speed Sensor specifications............................................................................................................................................... |
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Signal definition |
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Pulse mode......................................................................................................................................................................................... |
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Quadrature mode............................................................................................................................................................................. |
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CAN mode........................................................................................................................................................................................... |
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Filter parameter |
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Positioning.......................................................................................................................................................................................... |
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Product overview |
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Dimensions......................................................................................................................................................................................... |
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Sensor pinout..................................................................................................................................................................................... |
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Mating connector.......................................................................................................................................................................... |
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Wiring diagram............................................................................................................................................................................... |
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Conversion diagram...................................................................................................................................................................... |
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Mounting of EMD Speed Sensor |
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Mounting of EMD Speed Sensor on LSHT Motors.............................................................................................................. |
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Configuration of EMD-Speed Sensor to other settings |
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Connect configuration box........................................................................................................................................................ |
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Changing of numbers of pulses/rev in pulse mode.......................................................................................................... |
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Change of MA-Filter in Pulse mode......................................................................................................................................... |
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Changing of Pulse mode into Quadrature mode............................................................................................................... |
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Changing of pulse mode into CAN mode............................................................................................................................. |
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Changing of Node Id in CAN mode......................................................................................................................................... |
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Changing of Message Transmission Rate in CAN mode.................................................................................................. |
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Change of MA-Filter in CAN mode.......................................................................................................................................... |
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Configuration box |
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Configuration box.......................................................................................................................................................................... |
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© Danfoss | June 2021 |
AQ152886482063en-000301 | 3 |
User Manual
Orbital Motor, EMD Speed Sensor
Product Overview
W Warning
Please note that the EMD speed sensor may fail. Output signals may not represent correct rotation speed or direction.
Any application of the EMD speed sensor should be subjected to appropriate hazard and risk assessment, according to relevant safety standards for the application.
Reliability data MTBF for the EMD speed sensor are available on request.
Description
Function of the speed sensor is to detect shaft speed and the direction of rotation. The sensor is mounted to the endcover of an LSHT Orbital Motor and senses the speed from a magnet that is rotating inside the motor.
The magnet is connected to the cardan shaft (spool valve motor) or valve drive (disc valve motor) by a shaft.
Rotation of the magnet generate a rotating magnetic field that is a function of motor speed and direction.
EMD-Speed sensor convert this magnetic field into output signal of speed and direction.
Sensor principle
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Rotating magnetic field |
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Rotation |
Rotation |
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Cardanshaft |
Shaft |
Pressure interface |
Position of magnetic field
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80 |
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60 |
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Bridge B |
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Bridge A |
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| <![if ! IE]> <![endif]>Bridge |
-20 |
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-60 |
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-40 |
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-80 |
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0 |
15 |
30 |
45 |
60 |
75 |
90 |
105 |
120 |
135 |
150 |
165 |
180 |
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Rotation (Degrees)
Speed
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Vs |
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Pulse Mode |
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A+ |
A- B+ |
B- |
Quadrature Mode |
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µC |
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Gnd |
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CAN Mode |
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EMD-sensor |
P301 399 |
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After each Power-Up the shaft must rotate 1-2 revolutions before an output signal is generated.
4 | © Danfoss | June 2021 |
AQ152886482063en-000301 |
User Manual
Orbital Motor, EMD Speed Sensor
General data
EMD Speed Sensor specifications
Specifications:
Output signal * |
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D1 |
D2 |
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Pulse mode |
Push-pull output. Direction = CCW: high, CW: low |
Square Wave |
Direction |
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Configurable up to 180 pulse/revolutions |
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Quadrature mode |
2 channels with 90° phaseshift each with |
Square Wave Phase |
Square Wave Phase |
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90 pulses/revolution Push-pull output |
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B |
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CAN mode |
Supports CAN 2.0B with SAE J1939 Message Protocol with Proprietary Messages |
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Baudrate: 250 kbaud (fixed) |
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Shaft velocity: ± 2500 rpm |
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Speed range |
0 - 2500 rpm |
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Supply voltage |
9 - 36 Vdc |
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Maximum power |
0.8 W |
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Temperature range (ambient) |
-30 °C to 60 °C |
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EMC-Immunity (EMI): |
100 V/m ISO 13766 |
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Grade of enclosure † |
IP 69 K |
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Vibration |
30 G (294 m/s²) |
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Shock |
50 G (490 m/s²) |
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* Configurable with PLUS+1® Service Tool - Please contact Danfoss for further information.
† According to IEC 529.
© Danfoss | June 2021 |
AQ152886482063en-000301 | 5 |
User Manual
Orbital Motor, EMD Speed Sensor
Signal definition
Pulse mode
The sensor generates a speed dependent pulse on D1 and a direction signal on D2.
D1: |
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D2: |
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U |
High |
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UHigh |
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CCW |
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U |
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ULow |
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CW |
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Low |
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P301 344 |
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P301 345 |
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UHigh > Udc-2V |
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ULow < 2V |
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UHigh > Udc-2V |
ULow < 2V |
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Quadrature mode
The sensor generates a speed dependent pulse on D1 and D2 with a 90 degree phaseshift.
D1:
UHigh
ULow |
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UHigh > Udc-2V |
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ULow < 2V |
P301 344 |
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D2: |
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UHigh |
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ULow |
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UHigh > Udc-2V |
ULow < 2V |
P301 346 |
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CAN mode
Cyclic message specification
Interface: |
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CAN 2.0 B |
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Baud rate: |
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250 kBaud |
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Transmit rate: |
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10, 20, 50 (default), 100 or 200 ms (cyclic message transmission) |
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Proprietary B |
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Data |
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29 bit |
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0 |
1 |
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2 |
3 |
4 |
5 |
6 |
7 |
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(LSB) |
(MSB) |
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(LSB) |
(MSB) |
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(LSB) |
(MSB) |
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CAN ID |
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Reserved |
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Sequence |
Angular velocity |
Reserved |
CRC-16 |
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number |
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CAN ID: |
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J1939 proprietary B. Programmable 29 bit message id. |
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6 | © Danfoss | June 2021 |
AQ152886482063en-000301 |
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