background image

 

 

 

ALM Board RS485

 

 

ALM-BR4-4.3 

 

Accurate Lambda Meter (ALM-BR4-4.3) 

– Mini Board Version 

 

V1.0

 

COPYRIGHTS ECOTRONS LLC 

ALL RIGHTS RESERVED 

www.ecotrons.com

 

 

Note: If you are not sure about any specific details, 

please contact us at

 

[email protected]. 

 

 

Summary of Contents for ALM-BR4-4.3

Page 1: ...BR4 4 3 Accurate Lambda Meter ALM BR4 4 3 Mini Board Version V1 0 COPYRIGHTS ECOTRONS LLC ALL RIGHTS RESERVED www ecotrons com Note If you are not sure about any specific details please contact us at...

Page 2: ...ht way or it s left in the free air Make sure the environment is dry and it s not close to the inflammable materials The ALM Board is correctly connected to DC power supply 12V battery GND H and GND R...

Page 3: ...sion 3 3 1 Appearance picture 3 3 2 Dimensions Unit mm 4 Oxygen Sensor Protection 5 ALM Board Operating Instructions 6 5 1 Pin Assignment 6 5 2 Communication Protocol for RS485 Bus 7 How to Communicat...

Page 4: ...op mode accurately around 780o C degrees ALM Board communicates using RS485 ALM Board is designed to fit into the OEM s controller case with a very small footprint It has its own LSU 4 9 ADV sensor co...

Page 5: ...05 1 70 Air Fuel Ratio Fuel dependent see lambda range and accuracy Range of O2 21 21 Heater Control Built in PID control with CJ125 Current Typical 1A Peak 3 5A Heater return H Separate wire from Gro...

Page 6: ...ALM BR4 4 3 Manual 3 Copyrights ECOTRONS LLC www ecotrons com Appearance and Dimension 3 1 Appearance picture...

Page 7: ...ALM BR4 4 3 Manual 4 Copyrights ECOTRONS LLC www ecotrons com 3 2 Dimensions Unit mm...

Page 8: ...vehicle you can just un plug the LSF and plug in the wideband LSU sensor into the same hole Bosch LSU and LSF have the same size of the thread More User Notes LSU sensors are not designed to work wit...

Page 9: ...ALM BR4 4 3 Manual 6 Copyrights ECOTRONS LLC www ecotrons com ALM Board Operating Instructions 5 1 Pin Assignment...

Page 10: ...0V 0V Connector C A RS 485 Communication B RS 485 Communication GND Ground Reference ground 0V 0V 5 2 Communication Protocol for RS485 Bus RS485 communication is based on Modbus protocol Ecotrons Modb...

Page 11: ...messages PLC to ALM Request Description Data byte ADR 50 CMD 03 Start Addr Hi 20 Start Addr Lo 00 No Bytes Hi 00 No Bytes Lo 04 CRC CHK Lo 42 CRC CHK Hi 48 2 Registers for received data responding mes...

Page 12: ...h 8 bit xx LSU Temperature LSU Temperature High 8 bit 256 LSU Temperature High 8 bit 0 023438 Deg K 840 to 1303 LSU Temperature Low 8 bit xx LSU Faults High 8 bit xx LSU Sensor faults LSU Faults High...

Page 13: ...ort A and B showed in second picture above These two are different communication interfaces The correct process is 1 Flash the S19 file via the 3 pin connector on the board using EcoFlash software 2 C...

Page 14: ...rt 2 is connected to the 3 pin connector of the ALM board Note The MAX 232 adapter and USB RS232 converter are optional and they are not included in the standard ALM Board kits Users can connect the A...

Page 15: ...nection between ALM borad and RS485 ModBUS must be disconnected Otherwise S19 cannot be flashed 6 2 ALM GUI for Modbus Default Configuration Port Num Please look it up in your computer Baud Rate 19200...

Page 16: ...U yellow wire VM short to GND 1 Check the harness for short to ground 2 Change the LSU E5 LSU black wire UN short to power 1 Check the harness for short to power 2 Change the LSU E6 LSU black wire UN...

Reviews: