Category: CNC Machines
I didn't ever say thanks for your reply PCW so a belated thank you! Yes, the 7i96s. The above is working with the VFD set in 'pull-up' logic which is great. I still need to connect the VFD digital outputs (ST1 & STR) to the 7i96 inputs to signal when the motor is running at the commanded speed and when there is a fault. I also initially forgot to configure the PWM signal in pncconf initially.
A few more questions:
1) My VFD programming has the following setup:
- Minimum frequency of the motor: 100Hz (6000 RPM)
- Maximum frequency of the motor: 300Hz (18000 RPM)
In pncconf I set the max spindle speed to 18000 which I can see in the machine.ini file:[SPINDLE_0]
...
MAX_OUTPUT = 18000.0
OUTPUT_SCALE = 36000
OUTPUT_MIN_LIMIT = 0
OUTPUT_MAX_LIMIT = 18000
However, in the same file, I see the qtdragon display section with the following:
[DISPLAY]
DISPLAY = qtvcp qtdragon
...
MAX_SPINDLE_0_OVERRIDE = 1.000000
MIN_SPINDLE_0_OVERRIDE = 0.500000
DEFAULT_SPINDLE_0_SPEED = 500
MIN_SPINDLE_0_SPEED = 100
MAX_SPINDLE_0_SPEED = 2500
...
When I select FWD/REV in the gui, I am seeing the spindle spin in the correct direction and the VFD is correctly driving at 100Hz (i.e. the minimum safe speed for the spindle set in the VFD programming). Do I need to manually change DEFAULT_SPINDLE_0_SPEED, MIN_SPINDLE_0_SPEED, MIN_SPINDLE_0_SPEED? in the QtDragon [DISPLAY] settings in my .ini file or should pncconf be sorting this out?
