Schematic overview and setpoint values
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The hall effect sensor is supplied with 5 Volts and ground by the DDE.
A bridge circuit (H bridge) is used to activate the servomotor. This permits activation of the servomotor in the opposite direction. The bridge circuit is monitored diagnostically. H-bridge designates an electrical gearshift with 5 shift elements in the shape of a capital H for shifting between.
| Item | Explanation |
|---|---|
| 1 | EGR controller |
| 2 | Cam disc |
| 3 | Bucket tappet |
| 4 | Housing |
| 5 | Seat |
Observe the following setpoint values for the EGR controller:
| Variable | Value |
|---|---|
| Servomotor supply voltage | 12 Volts |
| Activation frequency for servomotor | 1300 Hz |
| Blocking current for servomotor | 5 A |
| Hall effect sensor supply voltage | 4.5 to 5.5 V |
| Power consumption of hall effect sensor | 20 mA |
| Temperature range of hall effect sensor and servomotor | -40 °C to 140 °C |