Sennheiser SI 234 - ANNEXE 802 Operations Instructions download pdf (Page 405)

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DA 42 NG AFM Airplane Description

Doc. No. 7.01.16-E Rev. 3 01-Apr-2014 Page 7 - 57

In accordance with the received signals and a comparison with the programmed

characteristic diagrams the necessary inputs are calculated and transmitted by the

following signal lines to the engine:

- Signal for propeller governor pressure valve

- Signal for the rail-pressure regulation valve

- Signal for each of the 4 injection nozzles

- Activation of the glow plugs

- Signal for the waste gate valve

The following alerts are displayed on PFD of the G1000:

- Glow sparks active

- Status ECU A

- Status ECU B

The electrical ECU consists of two similar ECUs. A VOTER switch is integrated in the

Electrical ECU and proposes an ECU to control the engine regarding the ECU

operating hours or in case of a failure the ECU with better engine control capability.

A fault in one of the ECUs is indicated by a caution message on the PFD

(L/R ECU A/B FAIL). After the indication of the L/R ECU A/B FAIL caution message,

the engine must be serviced.

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Sennheiser SI 234 - ANNEXE 802 Operations Instructions Page 405

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