Pm1440gt Ordered

You would want the 5K version of this 22mm pot. https://www.automationdirect.com/ad...dicators/22mm_Metal/Potentiometers/ECX2300-5K
They work well and fit the 22mm hole. I have also turned a 22mm to 3/8" bushing and you can use any type of standard linear pot in the 1k or 2K range. Examples below.
http://www.ebay.com/itm/Allen-Bradley-Type-J-1K-Pot-Potentiometer-NNB-JAIN056S102MA-/321994258839
http://www.ebay.com/itm/Clarostat-RV4NAYSD202A-2k-Ohms-53C3-2K-S-20-9211-Potentiometer-/172237068762
 
Pot ordered. Lathe still due around 12/1. I'm adding the DRO & Aloris BXA. Are there any other electrical components I need to be ordering to do a basic VFD install?
Thanks for the help, this is great.
 
The Hitachi VFD is a great unit. I had a TECO that was bad from the factory, and bought the Hitachi WJ200 instead and loved it.
 
You will need a cabinet for the VFD with some type of passive or active venting (added). The minimum cabinet size is probably 12 x 12 x 8 deep. Power disconnect switch (30-40A 2 or 3 pole), Braking resistor, for the specific VFD you purchase. The 3 phase PM1440GT comes with a 3 Hp motor (2 Hp on the single phase), so you would need the WJ200-022SF if running off of single phase input. If you do not have the machine on a dedicated breaker, you might consider a local breaker or fusing. You could also use the fuse holders in the machine, but the fusing for VFDs is different and requires high speed fuses.

http://www.ebay.com/itm/Wiegmann-Gr...e-12-x12-x8-Vented-HFWS10350861-/201566256259
http://www.ebay.com/itm/new-sce-electric-enclosure-sce-14128elj-nema-4-12-13/351649070472
Cooling can be passive with two 4" aluminum screened soffit vents, or active with something like a 120mm fan. When using a fan, I recommend installing it on the bottom and having it blow into the cabinet (positive pressure) and a screened outlet either on the top or the side of the cabinet.

Braking Resistor: anything in the 35-50 Ohm range 300-500W for the WJ200-022SF
http://www.ebay.com/itm/500W-50ohm-...resistance-Dummy-Load-for-Audio-/231092889325
http://www.alliedelec.com/ohmite-wfh330l50rje/70588550/

I am still not sure how you want to configure your machine to work with the VFD. I did help another individual who did a similar install on the 1440GT using the installed contactors as the relays for the VFD inputs. He was going to post his work, so I will send him and email to see if he can do it. It is a bit more complicated in the 1440GT because the coolant pump high voltage wiring also needs to be factored in.
Mark
 
If I plan on retaining the mechanical foot brake, is the braking resistor still necessary and / or useful?
 
dpb said:
If I plan on retaining the mechanical foot brake, is the braking resistor still necessary and / or useful?
Click to expand...

If you want to hook up a "micrometer stop" sort of solution for threading into a shoulder or inside a blind hole? Yes.
 
Ordered the enclosure & braking resistor. PM has contacted me, looking for the rest of their $$, the lathe should be here this month.
 
Lathe is shipping today, arriving sometime next week. Finger tapping commenced.
 
Due to arrive 12/28, UPS freight. I paid for lift gate delivery, UPS guy I spoke to today said they should be able to place it in my detached garage for me. "As long as you don't want us to put it in your house." Hopefully the driver is equally agreeable. This will save me some troubles & $$.
 
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