On 02/02/2016 10:03 PM, Gene Heskett wrote: > > I believe they are. Would you like to see the .hal file? Hmm, not sure I could tell much from it. Is this using a Pico Systems PWM controller, or a Mesa board? (I've lost track.) Following info assumes my PWM controller. When you hit F2 to go from "machine on" to "machine off", then the PWM outputs are disabled, and so the PWM output goes to a low (zero Volts) state. That should turn off the transistors of the PWM servo amp, assuming the PWM output goes to the servo amp's PWM+ input, and the PWM- input is grounded. When you hit F1 to go to the E-STOP state, then the PWM is forced to zero, all SSR drive signals are forced to the Hi-Z state. The SSRs have the + terminal connected to +3.3 V, and the - terminal is grounded to turn the SSR on. > >> But, maybe there is a momentary bobble on the commands to >> the SSRs when you click the button. >> I'm guessing that means the E-stop button here. >> > Thats the second button in axis? Just for grins I also tried the first > button, identical results, > > The charge pump itself is on full time, at 500 Hz. I am gating it with > and gates driven by timers. That 500Hz is detected by charge pump > detectors that have about 200 milliseconds of storage before they turn > the SSR's off. So a wibble in the pump signal would have to be pretty > drastic to effect them I think. Those I can look at with halscope. > > Charge pump? You are sending this out on one of the digital outputs to an SSR?
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