Wideband LAMBDA controller with Stepper driver control - LCP90

Product LAMBDA controller with Stepper driver - LCP90 is separate module for control and signal processing of wideband lambda probe type LSU 4.9 a LSU 4.2 plus control of a stepper motor. Back part is designed to be attached to DIN rail.

We supply along with matting terminal blocks, spring ones (screw clamps on demand) and USB cable for PC connection.

Wideband LAMBDA controller with Stepper driver control - LCP90

388.41 € with VAT

Technical Specification

The product LAMBDA controller works with a wideband Lambda sensor type LSU 4.9 and LSU 4.2 with extended function for PID mixture regulation using a Stepper motor control.

Lambda Controller can be used for:
-  Combustion engines of automobile
-  Cogeneration units = CHP
-  Boilers for gas combustion or biomass

LAMBDA controller is based on circuit BOSCH CJ125 which serves basic function of oxygen sensor along with supporting microprocessor for filtering and control. Microprocessor also provides PID lambda regulation by Stepper motor control, Analog output – AO, diagnostic interface USB and CANbus in protocol SAE J1939.

Lambda heater is controlled by PID regulator and the resistance of measuring cell (Nerns Cell) with auto-off option according to engine speed received from CANbus / J1939.

LAMBDA controller processes and visualizes data about Lambda mixture – λ, Oxygen – O2, Ratio – A/F, Sensor temperature – T [°C], Supply voltage – U[V], Analog output – AO [V/mA] Actual step of stepper motor [-] and Engine speed – RPM (takes from CANbus / J1939).

Main Features

  • Supply voltage range 9 to 36V (12V/24V)
  • Consumption 15W (Lambda heater and Stepping motor)
  • Operation temperature −40 to 85°C
  • Support for Lambda sensor type: LSU 4.9 and LSU 4.2
  • Used BOSCH CJ125 circuit and microprocessor support
  • Visualization:
    • Lambda – λ ......................... 0.7 to 12.5 (± 0.1%)
    • Oxygen – O2 ..................... -7.5 to 20% (± 0.1%)
    • Ratio – A/F ......................... Gasoline, Diesel, Methanol, Ethanol
    • E85, LPG, CNG, Hydrogen
    • Temperature – T [°C] .......... -40 to 1050°C (± 3°C)
    • Supply voltage – U [V] ......... 7 to 50V (± 2 %)
    • Analog out – AO [V] ............  0-5V, 0-10V, 0-20mA, 4-20mA (± 0.1%)
    • Digital Input DI1/DI2 ........... 0 or 12/24V
    • Engine hours ....................... [h:m:s]
    • Actual step ........................... 0 to 65000 steps
  • PID mixture regulation by Stepper motor control (micro-step 1/32)
  • Power source 11V inside for LAMBDA heating and Stepper motor supply
  • CANbus support at protocol SAE J1939 (250kbps)
  • Supported connection or integration with ECU MASTER
  • Galvanically isolated USB – USB protection against earth fault and EMC disturbances
  • PC application – configuration and visualization measured values
  • Measuring the supply voltage
  • Installation standard – DIN rail 35mm
  • Protection class – IP20
  • Dimensions 118×101×23mm
  • Spring terminals (screw terminals upon request)

Adding choice of USB flash disk with all documentation and PC application:
If you buy a flash drive at the very bottom in Recommended accessories (here), we will upload all the necessary documentation and software to it.
Otherwise, these files are also freely downloadable below.

Signal Description

LCP90_pruz_popis_signalu

MARKINGMEANINGRANGE, ACTIVE LEVEL
+V Power supply 9 to 36V (12V/24V)
G Ground supply 0V
AOUT+ Stepper motor – Signal A+ Power 11V / 1A, micro-stepping 1/32
AOUT− Stepper motor – Signal A− Power 11V / 1A, micro-stepping 1/32
BOUT+ Stepper motor – Signal B+ Power 11V / 1A, micro-stepping 1/32
BOUT− Stepper motor – Signal B− Power 11V / 1A, micro-stepping 1/32
DI1
DI2
Digital input signal 0 or 12/24V (active signal)
AO Analog Output 0-5V, 0-10V, 0-20mA, 4-20mA (± 0.1%)
CAN H
CAN L
CAN bus SAE J1939 / 250kbps
LSU 4.9 (LSU 4.2)
IP (red) Lambda LSU - pin 1 (6*) IP/APE - pump current shunt input
VM (yellow) Lambda LSU - pin 2 (5*) VM/IPN - virtual ground output
HEAT− (white) LSU - pin 3 (4*) Uh−/H− – heating +
HEAT+ (gray) Lambda LSU - pin 4 (3*) Uh+/H - heating +
IA (green) Lambda LSU - pin 5 (2*) IA/RT - pump current control output
UN (black) Lambda LSU - pin 6 (1*) UN/RE - inverting input of pump

* Index of pins depends on Lambda sensor type; index in bracket belong to type LSU 4.2

Wiring Schema

 

LCP90_pruz_zapojeni_kon

Sonda_a_krokovy_motorek

Application LAMBDA control – visualization software

Visualization is done from application LAMBDA control run on your PC. The application works under Windows 95 and higher. Installation requires 4MB of free space at your hard disc.

To connect lambda to PC is used USB interface. We supply the module also with the USB connection cable. The driver for USB you can download in the Documentation section.

Visualized information

  • Revolutions [rev/min]
  • Lambda – λ
  • Oxygen – O2
  • Ratio – A/F
  • Temperature – T [°C]
  • Supply voltage – U [V]
  • Analog output – AO [V/mA]
  • Engine hours [h:m:s]
  • Actual stepper motor position [-]

Icon to run the visualization Run the visualization


AFR – Air Fuel Ratio

 

Adding choice of USB flash disk with all documentation and PC application:
If you buy a flash drive at the very bottom in Recommended accessories (here), we will upload all the necessary documentation and software to it.
Otherwise, these files are also freely downloadable below.

 

Documentation

Name Date File
LAMBDA controller with Stepper driver - LCP90 [pdf, 1983kB] 16.08.2023 Download
LAMBDA_AnalogOUT r8_6 [pdf, 210kB] 21.06.2023 Download
LAMBDA_AnalogOUT r8_6 [xls, 243kB] 21.06.2023 Download
Certificate – Radio disturbance characteristics; Immunity characteristics 27.07.2021 Download
J1939_CANopen_Protocol [pdf, 50kB] 17.04.2019 Download

Application Software

Name Date File
LAMBDA control V9.5 [zip, 761kB] 21.06.2023 Download
USBdriver_v2.12.24 [zip, 1335 kB] 21.02.2017 Download

Available Variants

Name Cena s DPH  
Wideband LAMBDA controller with Stepper driver control - LCP90 – Type basic 388.41 €

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