Motec PLM
| Brand | Motec |
|---|---|
| Model | PLM |
| Output Type | Differential mode (signal ground and power supply ground are different) |
| Sensor Type | Bosch LSU 4.2 |
| Fuse | 5A |
Wideband controller with display. Can be connected to 12V battery or a 12V/5A power supply.
Typical installation is a fixed installation in the exhaust pipe, a few centimeters after the manifold junction. In dynamometers, it can be used with an adapter at the exhaust pipe outlet as explained here.
IMPORTANT
Read the manufacturer's instructions and follow the recommendations for position, mounting, and fuse.
Connection to Accudyno
GROUND CONNECTIONS
This lambda sensor controller has differential output, while the Accudyno system has common mode input. Therefore, for a correct reading, the analog ground (Analog Output -), the power supply ground (Power Supply Negative -), and the Accudyno ground (IN -) must be connected to the same point. See the figure.
| Cable/Color | Function | GO/PRO | Gyra/Forza |
|---|---|---|---|
| Pin H8 Analog Out(+) | Analog Output (+) | Accudyno IN+ (AFR Pin 3) | AIN1 |
| Pin H9 Analog Out(-) | Accudyno IN- (AFR Pin 2) and Battery(-) | GND | |
| Pin M1 12V Bat(+) | Power Supply Positive (+) | Battery(+) | |
| Pin M6 GND Bat(-) | Power Supply Negative (-) | Accudyno IN- (AFR Pin 2) and Battery(-) | GND |
*H8 and H9 are pins 8 and 9 of the female connector. M1 and M6 are pins 1 and 6 of the male connector.
Calibration
| Voltage | Lambda | AFR (Gasoline) |
|---|---|---|
| 0 V | 0.5 | 7.35 |
| 5 V | 1.75 | 25.73 |