Askpower VFD Connections
15 Mar 2018 21:05 #107400
by andypugh
Replied by andypugh on topic Askpower VFD Connections
Why do you think that you don't need PWM? How else do you intend to control the analogue output of the BoB?
Currently you are just sending on-off to pin 17.
The MACH3 setup you linked to even shows PWM control, and puts the PWM on parport pin 1.
You should be able to do this in Stepconf. Set Pin 1 to Spindle PWM.
Currently you are just sending on-off to pin 17.
The MACH3 setup you linked to even shows PWM control, and puts the PWM on parport pin 1.
You should be able to do this in Stepconf. Set Pin 1 to Spindle PWM.
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15 Mar 2018 22:44 #107401
by skrap58
Replied by skrap58 on topic Askpower VFD Connections
So to be clear the 0-10 volt has to have pwmgen to communicate with linuxcnc/ Do i need scaling? I am still getting max spindle speed only. I have attached the new .hal I must be missing something?
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15 Mar 2018 22:46 #107402
by andypugh
Replied by andypugh on topic Askpower VFD Connections
Is the VFD configured for external voltage control?
If you measure the analogue output with a voltmeter does it vary with commanded spindle speed?
If you measure the analogue output with a voltmeter does it vary with commanded spindle speed?
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16 Mar 2018 12:23 #107419
by skrap58
Replied by skrap58 on topic Askpower VFD Connections
The vfd is configured for external voltage.
Any spindle command that I issue turns the spindle on and it goes to max speed.
I have 9.86 volts at the 0-10v in terminal on the vfd whether the machine is running or not.
Your questions imply that the .hal file is correct?
Thank you for the help.
Any spindle command that I issue turns the spindle on and it goes to max speed.
I have 9.86 volts at the 0-10v in terminal on the vfd whether the machine is running or not.
Your questions imply that the .hal file is correct?
Thank you for the help.
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16 Mar 2018 12:42 #107420
by andypugh
Replied by andypugh on topic Askpower VFD Connections
The HAL file looks largely correct, yes.
Does the voltage on the input pins vary if you change the spindle set speed?
If it is 10V for zero speed and 0 V for 2400 rpm then perhaps the PWM output pin needs to be inverted.
You can view the PWM output at the Parallel port pin with Halscope. You should see that vary as you change the spindle speed.
Does the voltage on the input pins vary if you change the spindle set speed?
If it is 10V for zero speed and 0 V for 2400 rpm then perhaps the PWM output pin needs to be inverted.
You can view the PWM output at the Parallel port pin with Halscope. You should see that vary as you change the spindle speed.
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20 Mar 2018 23:13 #107644
by skrap58
Replied by skrap58 on topic Askpower VFD Connections
Hi Andy,
I wanted to let you know that I am up and running. Inverting the signal on pin 1 did the trick. I appreciate all of your help. I am attaching my .hal file for reference in case someone else runs into the askpower vfd and the ST-V2 Breakout Board. I have the 10v out from the board connected to the the 10v in on the vfd and the ground. I am using Pin 17 through the relay to start the spindle. Than is conected to the fwd terminal on the vfd and a ground.
Thanks again for all of your help.
Bill
I wanted to let you know that I am up and running. Inverting the signal on pin 1 did the trick. I appreciate all of your help. I am attaching my .hal file for reference in case someone else runs into the askpower vfd and the ST-V2 Breakout Board. I have the 10v out from the board connected to the the 10v in on the vfd and the ground. I am using Pin 17 through the relay to start the spindle. Than is conected to the fwd terminal on the vfd and a ground.
Thanks again for all of your help.
Bill
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