Component description EDC operating element (51.11615–7169) Function The EDC control box has the following functions: EDC fault diagnosis with LED and flashcode Idle speed adjustment Conversion of 4–20 mA input signal into 0.64–3.2 volt Galvanic separation of the 4–20 mA throttle lever input signal from the EDC control unit Simulation of the idle switch (if the 4–20 mA triggering system is used) The control box is also an interface to the engine monitoring system. Terminal strip plug-in type 35 158 144 Green LED 82 4,2 Red LED 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 68 680 11 680 – Aus + 51.11615–7169 Typ EBE–EDC