Setup:
PCI-7342 motion controller card with UMI-7772 to interface with two delta electronics servo motor drive (ASDA-AB).
Issues:
1. UMI is not behaving as mentioned in the user manual:
a. After disabling the limit switches in NI max. I tried to run the motion controller to check the output. it's Disabled LED always turns on whenever I hit start in 1D interractive menu. In fact both axes at UMI behaves the same.
b. Enabled at Pin6 at control is always giving 24 volts output. even after I kill the axis or Halt the operation.
c. Encoder reading are however correct on both of axis feedback panel.
d. every time I connect limit switches to the UMI somehow it closes the loop and send the limit on signal to the servo drive thus making the servo drive give an limit error. I tried using transistors to make the signal at lower voltage of 12 volts but it still closes the loop. (after connecting to the panel total voltage drops to 2.1 volts, while being disconnected its 24.1 volts)
e. Analog output at both axes provide a output but since the axis gets disable just after I hit start the analog output also stops after an instance. And NI MAX gives an error (motor axis is killed).
f. I connected another power source to Viso and Ciso (24V) to check, but Viso and Ciso output at all the terminals on UMI gives a voltage of 6Volts and starts dropping to 0 within a few seconds.
(Diagnosis was made using an oscilloscope and a multimeter.)
2. I am attaching the connection diagram below for the reference if that helps.
for note: The same motor and driver setup worked fine when I was controlling it with a USB-DAQ and by converting 24V signals to 5V and vice versa using line drivers. I was hoping to get better contour move performance by moving to motion controller but here I am stuck with these issues.
I don't know if it's relevent but yes I followed steps metioned in UMI-7772 manual, Fundamentals of motion control (NI manual) and NI-Motion manual. Problem still persist.
I am expecting if anyone has come across such problem and found a way to make it work. any help will be really appreciated.
