Signal shape and setpoint values
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The DDE furnishes the 5-volt power and the earth connection for the throttle-valve actuator.
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 | Throttle-valve position in % |
| 2 | "Maximum" characteristic curve |
| 3 | "Minimum" characteristic curve |
| 4 | Throttle-valve aperture in degrees |
Please note the following specifications for the throttle-valve actuator:
| Variable | Value |
|---|---|
| Servomotor supply voltage | 5 Volts |
| Activation frequency for servomotor | 1300 Hz |
| Blocking current for servomotor | 4 A |
| Electrical power supply for throttle-valve sensor | 4.5 to 5.5 V |
| Current draw of throttle-valve sensor | 10 mA |
| Operating temperature range for throttle-valve sensor and servo-motor | -40 °C to 140 °C |