Jacky Fung Posted October 16, 2020 Report Share Posted October 16, 2020 Dear All, I was use a 96+ plugin into a DC2. Everything go smooth, only the AC Request Signal got problem. I checked the input pin go into DI1, when the AC off, it supply 12v. But when turn on the AC, it supply around 1.2 to 1.6v. Which the Digital input got a high signal then it won't engage the AC clutch. I tried to use a relay to 'convert' the signal, it work when turn on, but I cannot switch off the Signal, seems it still drive the relay for 1.6v signal... Do you have any suggestions for this? Thx for your help! Jacky Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 16, 2020 Report Share Posted October 16, 2020 Do you have the DI1 pull-up set to off? Quote Link to comment Share on other sites More sharing options...
Jacky Fung Posted October 16, 2020 Author Report Share Posted October 16, 2020 Yes. It off May I know is it possible to input 12v signal into analog input, then drive it as Ac request? Thx Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 16, 2020 Report Share Posted October 16, 2020 Just now, Jacky Fung said: May I know is it possible to input 12v signal into analog input, then drive it as Ac request? Thx With a G4+, no - the AC request must be from a DI or CAN bus. For the DI to work we want the voltage to go below 1.0V when ON. So my suggestion would be to connect two diodes inline with the AC request wire. A doide creates a voltage drop of about 0.7V - so with two diodes the voltage on the DI pin will be reduced by about 1.4V. Just any old common signal diode should work, like a 1N4148 or 1N914. Quote Link to comment Share on other sites More sharing options...
Jacky Fung Posted October 16, 2020 Author Report Share Posted October 16, 2020 Yeah!!! It works!!! Since I don't have a diode on hand. I use a LED to act as a diode. It works now! Thank you for your kindly help!! Quote Link to comment Share on other sites More sharing options...
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