Based on the manual that I found here:
http://www.delta.com.tw/product/em/drive/ac_motor/download/manual/VFD_M_EN_20100514.pdfpage 2-2 shows the basic wiring needed. From that, here are the connections:
PMDX-107 VFD
------------- -----------------------
Rev/Dir M1 (reverse/stop)
Fwd/Run M0 (forward/stop)
COM GND
And as per figure 2 on page 8 of the PMDX-107 manual (also note the PMDX-107 DIP Switch #6 setting):
Aref No connection
Aout AVI
Agnd GND
The PMDX-107 DIP switch settings should be:
* "Normal Mode" (see section 4.1 in the PMDX-107 manual)
* Solid State Relays as Forward/Reverse (see section 4.2)
* Charge Pump Enabled (see section 4.3, presuming this is on a PMDX-126)
* Fast filter response (see section 4.4)
* 10V reference (see section 4.5 and not above for analog connections)
You may also need to reprogram some register settings in the VFD to get it to pay attention to the Forward & Reverse inputs and the analog control voltage (instead of the VFD front panel controls). At a *very* quick glance, look at VFD registers Pr.00 and Pr.01 and set both to "01".
Bob