Danfoss EMD Operating guide
User Manual
Orbital Motor
EMD Speed Sensor
www.danfoss.com
User Manual
Orbital Motor, EMD Speed Sensor
Revision history Table of revisions
Date Changed Rev
June 2021 Changed document number from 'L1017819' to 'AQ152886482063' and removed obsolete
motors
April 2015 CG150 updated to CG150-2 BD
January 2015 Various updates BC
April 2014 Various updates BB
March 2014 Converted to Danfoss layout - DITA CMS BA
May 2012 Conversion Diagram text updated AB
May 2012 First edition AA
0301
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User Manual
Orbital Motor, EMD Speed Sensor
Contents
Product Overview
Description..........................................................................................................................................................................................4
General data
EMD Speed Sensor specifications...............................................................................................................................................5
Signal definition
Pulse mode......................................................................................................................................................................................... 6
Quadrature mode.............................................................................................................................................................................6
CAN mode...........................................................................................................................................................................................6
Filter parameter
Positioning..........................................................................................................................................................................................8
Product overview
Dimensions.........................................................................................................................................................................................9
Sensor pinout.....................................................................................................................................................................................9
Mating connector.......................................................................................................................................................................... 10
Wiring diagram............................................................................................................................................................................... 10
Conversion diagram......................................................................................................................................................................10
Mounting of EMD Speed Sensor
Mounting of EMD Speed Sensor on LSHT Motors..............................................................................................................12
Configuration of EMD-Speed Sensor to other settings
Connect configuration box........................................................................................................................................................ 13
Changing of numbers of pulses/rev in pulse mode..........................................................................................................13
Change of MA-Filter in Pulse mode.........................................................................................................................................14
Changing of Pulse mode into Quadrature mode...............................................................................................................14
Changing of pulse mode into CAN mode.............................................................................................................................15
Changing of Node Id in CAN mode.........................................................................................................................................15
Changing of Message Transmission Rate in CAN mode..................................................................................................15
Change of MA-Filter in CAN mode.......................................................................................................................................... 15
Configuration box
Configuration box..........................................................................................................................................................................17
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W
Rotating magnetic field
Rotation Rotation
Pressure interface
Cardan shaft
Shaft
Speed
Position of magnetic field
80
60
40
20
0
-20
-40
-60
-80
Bridge Output (mV)
Rotation (Degrees)
Bridge B Bridge A
15 30 45 60 75 90 105 120 135 150 165 1800
SN
EMD-sensor
Vs
Gnd
A+ A- B+ B-
µC
Pulse Mode
Quadrature Mode
CAN Mode
P301 399
User Manual
Orbital Motor, EMD Speed Sensor
Product Overview
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
After each Power-Up the shaft must rotate 1-2 revolutions before an output signal is generated.
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User Manual
Orbital Motor, EMD Speed Sensor
General data
EMD Speed Sensor specifications
Specifications:
Output signal
Speed range 0 - 2500 rpm
Supply voltage 9 - 36 Vdc
Maximum power 0.8 W
Temperature range (ambient) -30 °C to 60 °C
EMC-Immunity (EMI): 100 V/m ISO 13766
Grade of enclosure
Vibration 30 G (294 m/s²)
Shock 50 G (490 m/s²)
*
Configurable with PLUS+1® Service Tool - Please contact Danfoss for further information.
†
According to IEC 529.
*
Pulse mode Push-pull output. Direction = CCW: high, CW: low
Configurable up to 180 pulse/revolutions
Quadrature mode 2 channels with 90° phaseshift each with
90 pulses/revolution Push-pull output
CAN mode Supports CAN 2.0B with SAE J1939 Message Protocol with Proprietary Messages
Baudrate: 250 kbaud (fixed)
Shaft velocity: ± 2500 rpm
†
IP 69 K
D1 D2
Square Wave Direction
Square Wave PhaseASquare Wave Phase
B
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D1:
U
High
U
Low
P301 344
U
High
> Udc-2V U
Low
< 2V
D2:
P301 345
CCW
U
High
> Udc-2V U
Low
< 2V
CW
U
High
U
Low
D1:
U
High
U
Low
P301 344
U
High
> Udc-2V U
Low
< 2V
D2:
P301 346
U
High
U
Low
U
High
> Udc-2V U
Low
< 2V
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.
Quadrature mode
The sensor generates a speed dependent pulse on D1 and D2 with a 90 degree phaseshift.
CAN mode
Cyclic message specification
Interface:
Baud rate:
Transmit rate:
Proprietary B
29 bit
Data
0
(LSB)
CAN ID Reserved Sequence
CAN ID:
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CAN 2.0 B
250 kBaud
10, 20, 50 (default), 100 or 200 ms (cyclic message transmission)
1
(MSB)
2 3
(LSB)
4
(MSB)
5 6
Angular velocity Reserved CRC-16
number
J1939 proprietary B. Programmable 29 bit message id.
(LSB)
7
(MSB)
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