CZ
Wideband LAMBDA controller with Stepping driver control - LCP90
Product LAMBDA controller with Stepping 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 and USB cable for PC connection.
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 Stepping 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 Stepping 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 Stepping motor control (microstep 1/32)
- Power source 11V inside for LAMBDA heating and Stepping 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
Signal Description
| MARKING | MEANING | RANGE, ACTIVE LEVEL |
|---|---|---|
| +V | Power supply | 9 to 36V (12V/24V) |
| G | Ground supply | 0V |
| AOUT+ | Stepping motor – Signal A+ | Power 11V / 1A, microstepping 1/32 |
| AOUT− | Stepping motor – Signal A− | Power 11V / 1A, microstepping 1/32 |
| BOUT+ | Stepping motor – Signal B+ | Power 11V / 1A, microstepping 1/32 |
| BOUT− | Stepping motor – Signal B− | Power 11V / 1A, microstepping 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
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. Driver for USB is included on the installation CD.
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 stepping motor possition [-]
Run the visualization
AFR – Air Fuel Ratio
Documentation
| Name | Date | File |
|---|---|---|
| LAMBDA_AnalogOUT r8_4 [pdf, 180kB] | 15.02.2021 | Download |
| LAMBDA_AnalogOUT r8_4 [xls, 183kB] | 15.02.2021 | Download |
| LAMBDA controller with Stepper driver - LCP90 [pdf, 900kB] | 15.02.2021 | Download |
| J1939_CANopen_Protocol [pdf, 50kB] | 17.04.2019 | Download |
| Certificate – Radio disturbance characteristics; Immunity characteristics | 10.08.2015 | Download |
Available Variants
| Name | Cena s DPH | |
|---|---|---|
| Wideband LAMBDA controller with Stepping driver control - LCP90 – Type basic | 356.95 € |
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