ALM-CAN Manual V2.2
Contents
1. 0 00 Voll at AFR 1 7 35 O2 Sensor 1 Gasoline S 5 00 VoD at AFR2 2940 O2 Sensor 2 Gasoline z Wes Lambda are NO ALM Hardware Version Enable diagnostics of Linearized analog output S en 2 r2 Linear lation 0 00 Vol2 at AFR2 735 Hardware Version ALM Gauge 500 Voll at AFR 1 729 40 Stroke Number of Strokes 4 E I Vv r Sele jlt Ir vy r Gauge Settings m 5 1 00 Voll AFR Min 10 00 0 00 Vol2 AFR Max 20 00 5 ERE E Burn To ALM 02 mode ANOUT used to indicate changes in 02 the default setting 0 00 Volt at O2 20 99 5 00 Volt at O02 20 99 erence TTT tat O2 Sensor 1 Linear Relation Fuel Type 0 00 Vol at Oxygen 1 20 99 2 Sensor 1 Gasoline 3 00 Vol at Oxygen 2 2099 O2 Sensor 2 tka Tw POR Am 24 975 ALM Hardware Version Enable diagnostics of Lineanzed analog output N of Number of Sensors Ton Ve x AFR2 T2 Hardware Version 00 Voll at AFRI 294 uu Number of Strokes j r F r f Gauge Settings 100 Voll AFR Mm 1000 000 Vd2 AFR 2000 Bara To ALM If customers want to modify these parameters customers can refer to ALM GUI Manual 2 4 ALM GUI using COM or USB communication http www ecotrons com files ALM 20GUI 20Manual pdf Note The limit range of analog voltage is 0 5v The value of lambda is 0 5 16 The low voltage must match the low Lambda You can t make 5V match 0 5 Lambda AFR and O2 46 are same with2. Accurate Lambda Meter with CAN bus ALM CAN Manual V2 2 ECOTRONS ALM CAN Accurate Lambda Meter __ With CAN bus Manual V2 2 ECTORONS LLC COPY RIGHT ECOTRONS LLC ALL RIGHT RESERVED www ecotrons com Copyright ECOTRONS LLC Page 1 of 15 Accurate Lambda Meter with CAN bus ALM CAN Manual V2 2 Check before you power on ALM CAN e The oxygen sensor is installed in the right way or if it s left in the free air make sure it s dry and it s not close to the inflammable materials e The ALM CAN is correctly connected to DC power supply or 12V battery Website http www ecotrons com Email info ecotrons com www ecotrons com Copyright ECOTRONS LLC Page 2 of 15 Accurate Lambda Meter with CAN bus ALM CAN Manual V2 2 ALM CAN included parts Software and Documents Controller with CJ125 Stainless Bung Bosch LSU4 9 sensor and Plug ALM CAN II included parts ra Software and Documents Controller with CJ125 2x Stainless Bung 2x Bosch LSU4 9 sensors and Plug www ecotrons com Copyright ECOTRONS LLC Page 3 of 15 Accurate Lambda Meter with CAN bus ALM CAN Manual V2 2 Table of Content Chapter 1 ALM CAN Product Overview sese nennen nene enne etre nnne 5 Chapter 2 ALM CAN technical specifications esses nennen ener nnne 8 Chapter 3 Appearance and dimension sees ertet nente trennen etre nnne 9 Chapter 4 Protect your oxygen sensor siinse ani e
3. Lambda 5 5 How to verify analog voltage matching lambda Since you have 2 ALMs the way to compare is easy You can either cross check 2 ALMs with the same sensor or cross check 2 sensors with 1 ALM And the next step to check good lambda 1 Putthe sensor in the free air and use ALM GUI to read the O2 if it is close to 20 the ALM and sensor is good otherwise you could do Free air calibration www ecotrons com Copyright ECOTRONS LLC Page 14 of 15 Accurate Lambda Meter with CAN bus ALM CAN Manual V2 2 2 If ALM GUI gives good 02 then measure the ANOUT analog voltage with a voltage meter convert that voltage back to lambda and compare it against the lambda in the ALM GUI This is to verify the analog voltage is really matching the lambda measured www ecotrons com Copyright ECOTRONS LLC Page 15 of 15
4. N1 65281 the default ID is OXOCFF0002 channel 2 PGN2 61455 the default ID is OXOCFOOE02 PGN65280 and PGN65281 are Ecotrons Specified Information they are subset SAE J1939 protocols or the customized subsets The default CAN bus Baud Rate is 250kbs extended frame About CAN communication protocol please refer to ALM Communication Protocol CAN 5 4 ANOUT Calibration Lambda mode ANOUT used to indicate changes in lambda the default setting 0 00 Volt at Lambda 0 50 5 00 Volt at Lambda 2 00 A ALM Parameters Settings ee Some O2 Sensor 1 Linear Relation Fuel Type 0 00 Voll at Lambda 1 0 50 O2 Sensor 1 Gasoline jd 5 00 Vol2 at Lambda 2 2 00 O2 Sensor 2 Gasoline iz Iv Lambda M T O2 p v Lambda BrE one ALM Hardware Version Enable diagnostics of Linearized analog output Nienberof Sensors 1 0 00 VoD at AFR2 735 Hardware Version AL M Gauge 300 Voll at AFR 1 29 40 Siroke Number of Strokes 4 nal m m r Vv m Gauge Settings y L4 D m r 100 Voll AFR Min 10 00 0 00 Vol2 AFROMax 2000 Burn To ALM AFR mode ANOUT used to indicate changes in AFR the default setting 0 00 Volt at AFR 7 35 5 00 Volt at AFR 29 4 www ecotrons com Copyright ECOTRONS LLC Page 13 of 15 Accurate Lambda Meter with CAN bus ALM CAN Manual V2 2 A AM ameter Stings E mem O2 Sensor 1 Linear Relation Fuel Type
5. NO ALM TI RS232 LCD 12864 2 YES 0 5v LSU 4 9 default ADV 0 0 YES YES ALM LD RS232 CAN USB LCD 640 480 2 YES 0 10v LSU 4 9 default ADV YES YES YES YES Note Blue font represents the current user manual supported of ALM units WWW ecotrons com Copyright ECOTRONS LLC Page 7 of 15 Accurate Lambda Meter with CAN bus ALM CAN Manual V2 2 Chapter 2 ALM CAN technical specifications Power supply Input voltage range DC9V 15V 12V Typical Input current 60mA typical plus the heater current Voltage protection Reverse polarity protected amp over voltage protected Load Dump Clamp Maximum Voltage Sensors Compatible LSU4 9 Support LSU4 9D LSU 4 2 capable but not recommended Number of Sensors ALM CAN one ALM CAN II two Free air calibration No need it measures the free air 02 Accuracy Lambda range X 0 5 o Gasoline AFR 7 35 to free air 4 Lambda accuracy 30 008 9 1 00 0 01 20 80 0 05 A 1 70 Air Fuel Ratio Fuel dependent see lambda range and accuracy Heater Control Built in PID control with CJ125 Current Typical 1A Max 1 7A ALM CAN II Typical 1 7A Max 3 6A Heater return H Standalone Heater return wire Response time Lambda 5ms updating rate everything finished in 5ms 250k 500k IM CAN bus baud rate configurable Output CAN bus signals default SAE J1939 protocols Broadcasted signa
6. below figure The typical tilt angle is 30 The sensor head should be close to the center of the exhaust pipe After finding the right location on the exhaust pipe drill a hole of 18 mm in diameter Weld the sensor bung on it Note do not weld the bung with the sensor in it Note if you vehicle has a Bosch narrow band oxygen sensor LSF already you can just un plug the LSF and plug in the wideband LSU sensor into the hole Bosch LSU and LSF have the same size of the thread More User Notes A LSU sensors are not designed to work with leaded gasoline Using LSU sensor with leaded gasoline will reduce the sensor life A With the LSU sensor installed in the exhaust pipe whenever the engine is running please also run ALM CAN which controls the LSU heater Otherwise long time running engine with LSU sensor not heated can cause damage of the sensor A LSU sensor is preferred to run within the temperature range of 500 900 C the best temperature is 780 C Too high temperature gt 1030 C will cause damage of the sensor Refer to Bosch LSUA 9 data for more details about the variant temperature requirements http www etas com en downloadcenter 5858 php Avoid heating the LSU sensor before the engine is running At the engine start there may be condensations in the exhaust gas which can cause damage of the sensor The preferred order start the engine first then immediately turn on the ALM CAN which will ramp up the heating powe
7. control module or a wideband controller By default our ALM CAN supports SAE J1939 protocol and broadcasts O2 concentration Furthermore it broadcasts lambda sensor temperature and sensor fault codes etc ALM CAN can also be customized to follow OEM specific CAN protocols if needed Our ALM CAN has been used in many specific engine applications or gas analyzing applications where the main controller has already used the CAN bus to communicate with other control modules ALM CAN is kind of a perfect plug and play unit for the CAN bus based application Any controller on the CAN bus can read the broadcasted 02 or Lambda or other sensor info without any hardware changed The protocols can be either standard or customized We do provide the customization of the protocols for small manufacturer applications Meanwhile ALM CAN has a dual channel version ALM CAN II It includes 2x LSU 4 9 sensors can simultaneously measure the 02 of the two channels driven by Bosch CJ125 chips It is typically used for V shape engines like V6 V8 or V10 engines etc Another big advantage of the CAN bus communication to the 0 5V analog voltage output is accuracy The CAN bus completely eliminates all the errors created by DAC Digital to Analog Conversion and ADC Analog to Digital Conversion conversions The errors created by DAC and ADC alone can be as big as 0 02 lambda depending on many factors here your 5V reference voltage which always has some error
8. ed to connect the two O2 sensors 2 Connect ALM CAN to the CAN bus Yellow wire is CAN L Dark Green wire is CAN H ECOTRONS 3 Connect the 12V to 12V battery plus or the DC power supply 4 Connect the GND and heater return ground to 12V battery minus or the DC power supply negative Note 1 User s CAN bus must have 120 ohm terminal resistors 2 The default CAN bus baud rate is 250K this can be configured to 500k and 1M via PC GUI 3 If you want to communicate with your computer you can use ECOTRONS USB CAN Z converter Refer to ECOTRONS USB CAN Z User s Guide Users can connect ALM CAN to ALM GUI via CAN bus use ALM GUI users can change CAN ID beat rate display Lambda 02 O2 sensor temperature read fault codes record and playback data etc About ALM GUI usage please refer to the ALM GUI Manual www ecotrons com Copyright ECOTRONS LLC Page 12 of 15 Accurate Lambda Meter with CAN bus ALM CAN Manual V2 2 5 3 CAN communication settings ALM CAN CAN communication default broadcast two PGN data PGN65280 and PGN61454 they have different ID PGN1 65280 the default ID is OXOCFF0001 PGN2 61454 the default ID is Ox18FO0E01 ALM CAN II can simultaneously measure the O2 of the two channels each channel broadcast 2 PGN two CAN channels totaling 4 PGN They have different ID channel 1 PGNI 65280 the default ID is OXOCFF0001 channel 1 PGN2 61454 the default ID is OXOCFOOEO01 channel 2 PG
9. lsO2 concentration lambda sensor temperature and sensor fault codes Signal accuracy All 16 bit values Lambda analog output 0 5V user programmable optional not included Datalogging Compatible to any CAN bus based data logger User friendly PC software for configurations and customer settings Main Processor CPU Freescale MC9S12P128 16 bit micro processor Auto industry rated Speed 32MHz Memory 128k Flash 6k RAM 4k Data Special features of ALM wideband sensor On Board Diagnosis and error report Self learning of part to part variations aging effect Working with different types of fuels gasoline diesel E85 etc General Temperature range 40 C 125 C Dimensions 4 0 x 2 6 x 1 0 www ecotrons com Copyright ECOTRONS LLC Page 8 of 15 Accurate Lambda Meter with CAN bus ALM CAN Manual V2 2 Chapter 3 Appearance and dimension ALM CAN ALM CAN II dimension www ecotrons com Copyright ECOTRONS LLC Page 9 of 15 Accurate Lambda Meter with CAN bus ALM CAN Manual V2 2 Chapter 4 Protect your oxygen sensor Installation Correct installation of the oxygen sensors is a must to avoid sensor damage It protects the oxygen sensor from condensations and gives the sensor longer life It also can make the measurement more accurate The sensor body should be perpendicular to the exhaust gas flow and it should also be tilted in the range of 10 75 from the horizontal line see
10. nsor are mated pair by Bosch Presumably LSU sensors work the best with CJ125 chips See here for Bosch Motorsport s wideband controller LT4 http www bosch motorsport de media catalog_resources Function_Manual_LT4pdf pdf List of ALM CAN parts Small ALM controller with CAN bus built in Large LED display optional for lab environment Harness 60in default 120in optional Bosch LSU 4 9 sensor ALM CAN one ALM CAN II two Sensor plug and bung ALM CAN one ALM CAN II two CAN communication cable USB CAN Z converter optional CD documents and ALM GUI software CAN bus based 999999 www ecotrons com Copyright ECOTRONS LLC Page 6 of 15 Accurate Lambda Meter with CAN bus ALM CAN Manual V2 2 Virtual 02 Sensor Exhaust Exhaust Engine narrow band 02 Channels temperature pressure Speed sensor Products Communication Display supported ANOUT Range 02 Sensor Supported sensor sensor Input output NBOUT ALM Gauge RS232 AFR Gauge 1 YES 0 5v LSU 4 9 default ADV 0 0 YES YES ALM B ANOUT SCI 0 5v NO 1 YES 0 5v LSU 4 9 default ADV 0 0 NO 0 ALM B CAN CAN NO 1 NO LSU 4 9 default ADV 0 0 NO 0 ALM B RS485 RS485 NO 1 NO LSU 4 9 default ADV 0 0 NO 0 ALM LED RS232 LED 4 bit 1 YES 0 5v LSU 4 9 default ADV 0 0 YES YES ALM CAN CAN NO 1 NO LSU 4 9 default ADV NO NO NO NO ALM CAN II CAN NO 2 NO LSU 4 9 default ADV NO NO NO
11. r smoothly BE www ecotrons com Copyright ECOTRONS LLC Page 10 of 15 Accurate Lambda Meter with CAN bus ALM CAN Manual V2 2 Chapter 5 ALM CAN hardware connections 5 1 ALM CAN main connector pin out ALM CAN is a weatherproof design There are 3 cables coming out of ALM CAN e LSU 4 9 sensor cable with Bosch standard sensor connector e CAN bus which are CAN H and CAN L twisted wire pair e 12V Power and Ground wires standalone Heater return ALM CAN II has 4 cables e 2xLSU 4 9 sensor cable with Bosch standard sensor connector e CAN bus which are CAN H and CAN L twisted wire pair e 12V Power and Ground wires standalone Heater return 5 2 CAN bus connection overview Multiple ALM CAN units can be connected on the same CAN bus their ALM IDs should be different and can be configured via a PC GUI interface About ALM CAN CAN communication settings please refer to ALM GUI manual Keep in mind ALM CAN does not come with a CAN bus termination resistor 120 Q internally It is assumed the user CAN bus has that already 120 ohm 120 ohm Terminal Terminal Resistor Resistor ALM CAN1 ALM CAN2 ALM CAN3 ALM CANn www ecotrons com Copyright ECOTRONS LLC Page 11 of 15 Accurate Lambda Meter with CAN bus ALM CAN Manual V2 2 120 ohm Terminal Resistor 120 ohm Terminal Resistor wide band oxygen sensor Batteries 1 Connect the 6 pin LSU4 9 mating connector to the O2 sensor If you are using ALM CAN II ne
12. s and your DAC ADC chips which are mostly 10 bit length and have rounding errors Honestly all wideband controllers that use the 0 5V analog output cannot be called professional because no OEM application uses that ALM CAN comes by default in a sealed and solid case It can work in very harsh environment like 40 C to 125 C temperature and severe vibrations It is water submersible and meets the IP67 water proof standard You can also request to add a LED display to ALM CAN and make it lab environment equipment Again ALM CAN uses the more advanced LSUA 9 sensor instead of a LSU4 2 which is still used by most other wideband controllers LSU4 9 is the new generation wideband sensor It is superior to LSUA 2 One obvious proof is Bosch uses LSU4 9 across the board for their wideband applications Here is why LSU4 9 is superior to LSUA 2 http www ecotrons com technology bosch lsu 49 is superior to lsu 42 sensors ALM CAN can also use LSUA 9D sensor but the need to update the software if you need to use LSUA 9D please explain in advance at the time of purchase ALM Second Bosch chip CJ125 is the integrated chip IC specifically designed for LSU 4 9 4 2 Sensors Bosch s own wideband controller LambdaTronic uses CJ125 driver chip In fact Bosch uses this WWW ecotrons com Copyright ECOTRONS LLC Page 5 of 15 Accurate Lambda Meter with CAN bus ALM CAN Manual V2 2 chip wherever a LSU sensor is used The CJ125 and LSU se
13. sii kia A ai aeeai eterne nne ATE s 10 Chapter 5 ALM CAN hardware connections nennen tren etre ennenne 11 5 1 ALM CAN main connector pin OUt rainei neina eere trennen nette tren enne rennen nns 11 5 2 CAN bus connection overview eranu nins iai nienia a Aarna eaa sete tn etnies teen etnia 11 5 3 CAN communicati n SHINES 5 repete prre P prede 13 SA ANOUT Calibration ssoi nao tete ee ere e n te rettet ests 13 5 5 How to verify analog voltage matching lambda eee 14 www ecotrons com Copyright ECOTRONS LLC Page 4 of 15 Accurate Lambda Meter with CAN bus ALM CAN Manual V2 2 Chapter 1 ALM CAN Product Overview ALM Accurate Lambda Meter is an air fuel ratio AFR meter which uses the Bosch LSU4 9 wideband oxygen sensor and Bosch semiconductor chip CJ125 to accurately measure the AFR or lambda for variant combustion engines ALM CAN is the version that comes with the auto industry standard CAN bus This is the only wideband controller equipped with the CAN bus available to the after market The CAN bus has been widely used in auto industries and especially in engine control systems for a few decades There are tons of CAN bus based communication protocols published by SAE ISO CARB California Air Resource Board Multiple oxygen sensor based signals have been defined in those protocols One specific protocol SAE J1939 defines the oxygen concentration in the exhaust gas which can be broadcasted by the sensor
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