General Category > Generic Spindle interfaces, I/O boards, Misc boards and panels
Setting up PMDX-107/VFD with PMDX-126 and relays
jbolt:
I have my PMDX-126 and ESS working with no problems. I am now converting the gear head mill to a variable speed belt drive. I need some help verifying if I have the correct connections from the PMDX-107 to the VFD, how the jumpers on the PMDX-126 need to be configured and what settings on the PMDX-126 need to be made to control two solid state relays for coolant and mist.
I have the VFD running the motor in manual mode so that is all okay. The VFD is a Huanyang HY02D223B.
These are the settings I think are correct.
PMDX-107 ---> VFD
Pin 6 - Rev/Dir ----> REV (reverse run)
Pin 5 - Fwd/Run ----> FOR (forward run)
Pin 4 - COM (common terminal for relays, pins 5 & 6) ----> DCM (common terminal of digital and control signals)
Pin 3 - Aref (not used)
Pin 2 - Aout (spindle speed analog control voltage) ----> VI (analog voltage frequency reference input)
Pin 1 - Agnd (VSD ground reference) ----> ACM (common terminal of analog and control signals)
PMDX-107 Config settings (dip switches)
Config 1 = Off (Normal Mode)
Config 2 = Off (Normal Mode)
Config 3 = Off (relays operate as for and reverse control signals)
Config 4 = Off (charge pump signal required)
Slow = Off (fast PWM filter response) (may need to be changed to slow if VFD cannot keep up)
5v/10v = Off (10v reference)
PMDX-126 Settings
Config 1 = Open
Config 2 = Closed
Config 3 = Closed
Config 4 = Closed
Config 5 = Closed
Config 6 = Closed
Config 7 = ???
Config 8 = ???
Steve Stallings:
Looks like you nailed it for wiring and switch setting. There are two
more things to take care of:
1) Setting the parameters in the VFD. From the factory the settings
are usually configured to control the run mode and speed from the
panel on the VFD. You typically need to change at least two settings,
often the first two parameters, so that the VFD looks at its screw
terminal interface for commands.
2) The ESS needs an acceleration setting for the spindle speed. Without
it the speed will not ramp up. See this application note for info:
http://www.pmdx.com/Doc/AN002_PWMSpindleSmoothStepper_02.pdf
We also recommend that you get the VFD responding to the speed
calibration button on the PMDX-107 before proceeding to try to control
things from your software.
jbolt:
Steve,
Thank you for confirming the control wiring.
I am still unsure of the settings for JP1 & JP2 and the config switches 7 & 8 on the pmdx-126.
Additionally, with 4 axis and the 107 all the output pins from PP#1 are used. To control two solid state relays for coolant and mist do I use A, B, C or D on J5 on PP#2?
Jay
Steve Stallings:
The SmoothStepper does give you access to Port 2 and can control the signals
on J5. They map as follows:
A = Port 2 Pin 1
B = Port 2 Pin 14
C = Port 2 Pin 16
D = Port 2 Pin 17
The settings of JP1 and JP2 depend on what other features you
wish to use.
One useful setup is to use the small K2 relay as part of a power
control and E-Stop circuit. To do this, you need to set JP2 in the
"MultiMode" position, set DIP switch 8 to the Open position so
that K2 follows the state of "Outputs Enabled", and set DIP
switch 1 open (2 and 3 still closed) so that the Charge Pump
functions. There is an application about power control using
this feature here:
http://www.pmdx.com/Doc/AN003_MachinePower_03.pdf
The signal on Port 1 Pin 1 remains available to control the
large K1 relay. JP1 should be in the Pin 1 position if you want
to use this relay. If you prefer to use this signal for a SSR
on the Pin 1 output on J6, then you can remove the clip from
JP1 entirely to disable K2 so that it does not click on and off.
The setting of DIP switch 7 is a "don't care" because you are
not using K1 in "multimode".
The signals on Port 1 Pins 14 and 16 are used by the PMDX-107.
If you should ever want to run a 5th axis you can do that with
unused pins on J5 which the SmoothStepper can drive as a
stepper motor.
jbolt:
Stave, thank you for the clarification on the relays. The manual had me thinking K1 and K2 were disabled because of the 107.
I have the spindle turning on/off with Mach3 but I cannot set the speed. The spindle always goes to full speed regardless of the "S" command. Mach3 thinks it is going to the correct speed but it is always 100%.
I followed the AN002 so I'm not sure where I have gone wrong?
Jay
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