Connection for electric throttle lever control with 4–20 mA output signal The essential connections for the 4–20 mA throttle lever signal have already been described on page 16. The following pages contain a summary of other aspects of the electrical triggering system. Voltage supply The boatbuilder can arrange the voltage supply to the throttle lever either via ignition terminal 15 (+) / 31 (–) or battery terminal 30 (+) / 31 (–). a) Voltage supply to the throttle lever via ignition (terminal 15/31) Whether or not this possibility can be used depends on the current build-up (4mA) after the ignition voltage is switched on.
The build-up is fast enough if a current of at least 2.5 mA is available 0.2 seconds after the voltage supply has been switched on (e.g. Mathers Clear command). If this requirement is not met the pedal value transmitter input defect is classified an entry is made in the EDC fault memory there is an EDC constant light fault (alarm BE1: “Electronics fault”) In this case the throttle lever control system must be connected up direct to the battery voltage, taking into account the safety measures provided by the manufacturer. 96