Triggering of engine and gearbox a) Engine triggering with 4–20 mA signal Plug Plug EDC control box 51.11615–7169 X9 X9 9 14 Isolating transformer 16 11 Input 4–20 mA 10 I U 15 15 2 + + V V 4 mA ў 1,92 V 0,64 V Isolating transformer 20 mA ў 9,6 V 3,2 V 1 mA = 160 mV Via plug X9 and mating plug A it is possible to feed in a 4–20 mA current signal for triggering the engine. 4–20 mA = idle – full load. In the EDC control box 51.11615–7169 the 4–20 mA signal is galvanically separated from the EDC and converted into a voltage signal (4–20 mA ў 0.64–3.2 Volt). The mating plug A supplied has screw terminals so that no crimping tools will be needed for connecting it up. 103