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Amphenol Temposonics MH Series, Operating Manual, Page: 8 / 23

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Amphenol Temposonics MH Series Operating Manual Download Page 8

Temposonics

®

 MH Digital

Operating Manual

I

 8 

I

4.3 Bus termination / Network connection

In a 2-wire bus system like a CAN bus, serial data transmission is used, whereby the voltage difference between CAN_HI and CAN_LO is the bit 
information. To attenuate signal reflections at the open end of the bus, the data lines must be connected using a 120 Ω terminating resistor. The 
resistor should be inserted between the CAN_HI and CAN_LO data lines.

120 Ω

 12 / 24 VDC
GND
LO
HI

 BAT

GND

LO

HI

Summary of Contents for Temposonics MH Series

Page 1: ...bsolute Non Contact Position Sensors Operating Manual MH Series Temposonics MH Digital CANopen CANopen Safety SAE J1939 All specifications are subject to change Contact MTS for specifications and engineering drawings that are critical to your application Drawings contained in this document are for reference only Please visit www mtssensor com for the actual support documentation related to your se...

Page 2: ...ronics 10 5 Operation and Function 12 5 1 Insulation checks 12 5 2 Welding 12 6 What should be done in the event of functional disorder 13 6 1 Typical installation faults and their consequences 13 6 2 Test and programming 13 7 CAN Bus protocols 14 8 System description and operating modes 14 9 Communication objects 15 10 Starting the operation 16 10 1 Setting node parameters 16 10 2 System start 19...

Page 3: ...sely and compiled into standard electronic output signals Simple Mechanics The extremely robust sensor consists of the following main parts The innovative connector system which is easy to install in a few seconds any soldering or crimping needless dust and waterproof up to IP69K The flange housing with built in electronics and signal converter The position magnet as only moving part which is asse...

Page 4: ...ed product or connected equipment against damage Installation and operation If failure or functional disorder of the sensors cause danger for persons or imply a hazard of damage to operating facilities additional safety measures such as plausibility checks limit switches EMERGENCY OFF systems protective devices etc must be provided to prevent it In the event of trouble shut down the sensor and pro...

Page 5: ...ely for commissioning and service work familiarized with the operation of the equipment and know the information required for perfect operation given in the product documenta tion see MTS sales and supply conditions e g available for download from www mtssensor com Symbols Symbol Meaning This sign identifies an important information This sign indicates that the personnel damage such as death or bo...

Page 6: ... used For connection according to protection types IP68 and IP69K a corresponding tested mating plug is required 4 1 Connecting diagram Connection type M12x1 connector system 5 pin connector Pin assignment M12 connector F S 12 24 VDC 2 1 GND 3 3 CAN_HI 4 4 CAN_LO 5 2 n c 1 5 Fig Core output of MH sensors CANbus Detailed information on the mechanical installation of the sensor into the mobile hydra...

Page 7: ...e pay attention to connecting sequence Order Wire color Assignment 1 BN 12 24 VDC 2 WH GND 3 GN CAN_Lo 4 YE CAN_Hi VDC GND 12 24 VDC GND LO HI BAT GND LO HI 120 Ω 120 Ω 12 24 VDC GND LO HI BAT GND LO HI Protection against wrong polarity of VDC GND is always ensured The signal must always be connected to the controller input ...

Page 8: ...ansmission is used whereby the voltage difference between CAN_HI and CAN_LO is the bit information To attenuate signal reflections at the open end of the bus the data lines must be connected using a 120 Ω terminating resistor The resistor should be inserted between the CAN_HI and CAN_LO data lines 120 Ω 12 24 VDC GND LO HI BAT GND LO HI ...

Page 9: ...erating Manual I 9 I 4 4 Connection in the network Node ID 01 Node ID 10 Node ID 7F 12 24 VDC GND HI LO 12 24 VDC GND HI LO 12 24 VDC GND HI LO BAT HI LO GND 120 Ω Caution Please pay attention to individual Node ID s in network ...

Page 10: ...and on the signals in the cable should be taken into account Electrical power supply from battery charged by generator Load dump protection and EMC requirements acc to vehicle standards VDC 12 24 V GND 0V Signalausgang Signal out Kabelschirm Cable shield option Cylinder an Chassis GND Chassis GND Diesel Motor Diesel Engine ECU 12 24 VDC Machine ground To ensure perfect operation of the sensor the ...

Page 11: ...the ECU a protection from 24 VDC to Chassis GND must be installed 24 VDC GND 0V LO HI 2 cable shield VDC GND Power supply RT 120 Ω 1 Conductive metal Connector Housing Cylinder to chassis earth input filter of sensor become active 2 Cable shield connected to chassis GND on both sides Protection against electro magnetic interference RT Chassis GND Input Controller HI LO 1 1 2 ...

Page 12: ...th the cylinder pipe Figure shown in dark gray and the piston with the piston rod light gray These components are isolated electrically from each other by gaskets bearings and slide rails This means that normally no current flow is pos sible With cylinders however the welding current may be transmitted from the piston to the cylinder pipe In this case an electrical connection causes the entire wel...

Page 13: ... sensor head damage of housing components or electronics components Destruction of cables Short circuit electronics failure Untight connectors Liquids can penetrate into the sensor housing through cables or strands and cause short circuit or corrosion of electronics components Distance washers missing or installed in wrong order Signal offset 5 mm Faulty connection of ground shield Output signal t...

Page 14: ...y implementation are certified according to SIL2 IEC EN 61508 and can be used in safety critical areas Fundamentally the protocol is based on the CANopen protocol however only certified compo nents may be used The protocol enables safety oriented devices to be used together with devices that aren t safety oriented in CANopen network In this way reli able control systems similar to those realized i...

Page 15: ...s As the priority of error messages is generally higher than the priority of PDOs error messages are transmitted prior to PDOs The structure of a message in the CANopen protocol is as follows SOF Arbitration Control Data field CRC ACK EOF Interframe space 1 11 1 6 0 8 Bytes 15 1 1 1 7 3 Fig CAN bus data protocol CANopen Safety Redundant Data Transmission To meet the high safety requirements for SI...

Page 16: ... ready to start the operation and configuration Prior to the actual system start up however the communication parameters for operation in the CAN bus must be set Only the basic procedure is described in these operating instructions For the applicable commands used to realize the sensor setting please refer to the enclosed programming in structions 10 1 Node parameter setting CANopen CANopen Safety...

Page 17: ...anges of the node address are effective immediately To save the node address permanently the following command must be sent Data source COB ID Data Destination Controller 0x7e5 17 Sensor Sensor 0x7e4 17 00 00 00 00 00 00 00 Controller Setting the Baud Rate The baud rate indicates the speed at which the sensor and the entire CAN bus are operated Setting the same baud rate both for the sensor and fo...

Page 18: ...E J1939 supports extended network management This management requires network registration Address Claiming by the bus sharing units with a unique address prior to starting the system The regular bus operation is started only after all bus sharing units have logged in suc cessfully During operation the correct address assignment is checked continuously During operation a new source address can be ...

Page 19: ...work at all times via a DBT master If the need arises changed parameters can be saved in EEPROM and are used for configuration automatically when switching on for the next time After completing the settings the sensor is switched from pre operational to operational mode using a Start_Remote_Node command During this mode data can be transmitted via PDOs There are two possible ways for transmission ...

Page 20: ...a only after reception of a SYNC message Device Profile Parameters which are important for sensor operation e g position and speed resolution or cycle time are stored in the Device Profile In this context note that some operating parameters are important Resolution After delivery the sensor resolution is 100 µm As standard the reso lution of the motion speed is set to 1mm s For detailed informatio...

Page 21: ...B2SAMA 4D 54 53 00 64 00 00 00 Sensor SA MH CAN J1939 standard sensor Source Address MA Master Source Address z B 64 00 Bytes to configure transmission repetition rates 10 4 Sensor data during operation CANopen CANopen Safety For data output the Temposonics MH series position sensor provides a process data object PDO The PDO includes the data for position and speed Data Format The position data re...

Page 22: ...Nopen Safety Emergency objects are always sent when the internal error status register has changed also if an error occurred and has been corrected The object consists of 8 data bytes It has the following structure Identifier DLC D0 D1 D2 D3 D4 D5 D6 D7 0x80 NodeID 8 Error Code Error register Manufacturer specific Fig Structure of an emergency object With Temposonics MH series sensors the followin...

Page 23: ...hone 46 70 29 91 281 E mail info sca temposonics com CHINA Branch Office Phone 86 21 2415 1000 2415 1001 E mail info cn temposonics com JAPAN Branch Office Phone 81 3 6416 1063 E mail info jp temposonics com temposonics com 2021 Temposonics LLC all rights reserved Temposonics LLC and Temposonics GmbH Co KG are subsidiaries of Amphenol Corporation Except for any third party marks for which attribut...

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