Lambda controller configuration

Ecumaster LAMBDA to CAN

DC1 dyno controller is compatible with Ecumaster Lambda to CAN wideband oxygen sensor controller.

To achieve maximum accuracy, the Lambda controller should be connected to DC1 via CAN bus.

One controller with sensor connected uses around 1.5A peak current and can be supplied from 12V output built in DC1 if no other receivers with significant power requirement are connected to the supply. If more controllers are required, external power supply should be used.

DC1 Dyno ControllerAdditional 12V power supplyLambda to CAN 1Lambda to CAN n
CAN 1 HCAN highCAN high
CAN 1 LCAN lowCAN low
Wiring table for configuration with external power supply

The CAN bus connection should be made with twisted pair wires, and it should be terminated on both ends with 120Ohm resistors. On the DC1 side, the bus can be terminated with build in software controlled resistor.

CAN bus topology

Lambda to CAN default configuration enables the controller when the engine is running by monitoring power supply voltage. To use the controller with 12V power supply, “Enable voltage” should be lowered to 9V.

When using multiple controllers, each controller must have different “CAN ID” associated. The controller can send frames on two following IDs, so the IDs should be spaced by at least 2. For example: controller 1 CAN ID: 0x664, controller 2 CAN ID: 0x666, controller 3 CAN ID: 0x668. Note the “Bit rate” setting, as it needs to be the same in DC1 settings.

Lambda controller configuration accessible through Ecumaster Light Client software
Example basic configuration for 2 lambda controllers