Author Topic: PMDX-107 and Hitachi VFD Not Playing Well Together  (Read 2056 times)

LerninCNC

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PMDX-107 and Hitachi VFD Not Playing Well Together
« on: July 05, 2017, 08:32:17 PM »
I joined this forum because I've heard good things about PMDX products and support.  Recently I purchased a PMDX-126 BoB, PMDX-107 spindle controller and an ethernet smoothstepper.  Finished up installation and configuration and got the BoB and smoothstepper working in normal mode.  I can jog the motors, the e-stop works, limit switches do what they are supposed to do, and the probe functions.  But when I configure the Dip switch for normal mode with charge pump the motors no longer move and the remote e-stop doesn't work.  I've enabled the charge pump function in Mach3 and specified Port 1 and Pin 17.  Spent most of today reading and trying to track down a solution.  No luck!

My second issue is I can't get the PMDX-107 board to communicate with my VFD (Hitachi WJ200-015SF).  I followed the AN002 instructions but still no communication.  Tried it with charge pump and without. 

PLC is jumpered to L on upper row "Source Logic".

Motor thermal switch to Terminal 5 (Logic Input) and Terminal L (Grnd for logic inputs) on VFD

107 to VFD Connections:

Rev/Dir  to Terminal 2 on VFD (Logic Input)
Fwd/Run to Terminal 1 on VFD (Logic Input)
COM to Terminal P24 on VFD (+24V for logic inputs)
Aref to Terminal H on VFD (+10V analog reference)
Aout to Terminal O on VFD (analog voltage input)
Agnd to Terminal L on lower row on VFD (GRND for logic inputs)
Dip 6 On For RatioMetric (Tried it Both Ways On and off).

Not sure what I'm doing wrong.  Any help is appreciated.  If more information is needed please ask.


Thanks

Steve Stallings

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Re: PMDX-107 and Hitachi VFD Not Playing Well Together
« Reply #1 on: July 13, 2017, 06:43:31 PM »
If your previously working setup stops working when you set
Dip Switch 1 to the Open position, then the PMDX-126 is not
seeing the Charge Pump Signal.

There are two ways to confirm the presence of the Charge
Pump signal. First, there is an LED on the PMDX-126 labeled
Outputs Enabled. It you set DIP Switch 1 to On for operation
without a Charge Pump, you should see the LED glow as
long as you do not have an E-Stop condition. If you set
DIP Switch 1 to Off to enable the Charge Pump function, then
this LED will  turn off when the board does not see a Charge
Pump signal on Pin 17. You can also look at the Pin 17 LED
beside connector J6 to look at the Charge Pump signal directly.

Your description of the wiring between the VFD and the
PMDX-107 is correct.

If you cannot get the Charge Pump signal to work, you will
need to set DIP Switch 4 of the PMDX-107 to the On position
to tell it to ignore the Charge Pump signal.

You can tell if the PMDX-107 is responding to signals from
the SmoothStepper by looking at the LEDs on the PMDX-107.

If these LEDs are responding and your VFD does not, you
should also try the TEST button on the PMDX-107.

If the VFD still does not respond, it is likely that your
VFD parameters are not set correctly. The most important
ones are A001 (frequency source) and A002 (Run command
source). Both of these must be set to 01 to allow activation
from the control terminals where the PMDX-107 is connected.
« Last Edit: July 13, 2017, 06:45:33 PM by Steve Stallings »
Steve Stallings
www.PMDX.com