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where is the +12V power supply for h-bridge and dc motor???
If it is connected inside the ECU, where? If it is connected directly to ECU power supply (pin25/ec36), can be fuse upgraded to 10-15A? it is sufficient for protect the ecu then? |
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* +12V power supply for internal H-bridge (and DC motor) * from EC36/pin25 (+12V) * Fuse upgraded to 10-15A (otherwise a small 1 .. 7.5A fuse will likely blow when ETC/DBW DC motor is activated). ** In any case, take care not to short stepper outputs (to +12V or to GND). This is important even with 1A ECU fuse, so not much difference. * The ECU should be reliable if connected properly GenBoard/Manual/GroundConnections . The ECU electronics does not normally draw > 0.25A current, but possible reason for overcurrent is a shorted output: so each ECU output is (must be) protected by the fuse in that branch, those fuses will also protect the ECU from overcurrent. |