> Each servo amp has a relay that opens when the amp goes to > fault status. There is also a fault relay in the spindle VFD, > and a red manual button. > > Or does the FAULT from the servo go away on removal of power which > then closes the ESTOP chain again? > The servo amps have a fault reset button on them that has to > be pressed to clear it. There are red LEDs on the amp, so I > can see which one faulted.
I took another look at the documentation for the PMDX-126 BoB and have configured the second relay to serve as the extension to the ESTOP NC circuit. Now a FAULT will shut off the relay and remove the HV power. With HV there I can now also toggle the Machine Enable (F2) and I see the proper signal bring the STMBL AC Servo drive in and out of enabled without the HV also switching off. But the STMBL still has a serious issue with a FAULT output remaining while the STMBL ENABLE is FALSE. Personally I think that this is the wrong type of behaviour. If there are several devices wire OR'd together I think it's a requirement that if the drive is disabled then the fault output should be blocked. Fine to keep blinking LEDs with error codes. Fine if you have to press a reset button. But a disable means disable everything. What is needed in the HAL file that changes when the RED button (F1) is toggled? I think I want it to stop the Charge Pump, which would shut down all the outputs and result in the ESTOP relay opening as if an ESTOP was pressed. Toggling it back the other way would then re-enable the charge pump. Have I got that right? What HAL signal is activated by the RED button on the user screen? Thanks John _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
