1966 Model a 9 3 phase to single

IMHO these machines were designed to be used hard, make some money with it and when it's time go and buy a new one.

You will definitely want the VFD and it'll probably cost less than replacing the motor. Wire the original switch to the VFD for forward/stop/reverse, add a 10k pot for speed control and a cheap tachometer to know what speed you're running. That's what I did on my Seneca Falls and it transforms these old lathes pretty dramatically.

John
 
Thanks for your input. This machine looks like it was pretty well maintained and lightly used. So
VFD it is.
 
I have no experience with it. If it is durable enough no additional wiring would be needed. it says it all sealed to mount outside.

How do you program it?? is there a fault and program window i don't see? Does it allow a brake resistor??


<EDIT> scanned the manual. its all done with pots and jumpers - no programming. Looks like braking resistor is not allowed.

My 2 cents. looks like this is designed for applications where it works as set up right out of the box. Hook up power and motor wires and away you go. the real question: will it work on your machine this way?? i don't know.
 
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Karl, I was hoping you’d pipe in. Here’s their description.

KBAC-24D Black (9987) AC Drives, Nema 4x Inverter

The KBAC-24D Adjustable Frequency Drive is a variable speed control in a NEMA-4X /IP-65 washdown and watertight enclosure. It is designed to operate 208-230 Volt 3-phase AC induction motors through 3.6 Amps RMS. The sine wave coded Pulse Width Modulated (PWM) output operates at a frequency of 16kHz which provides high motor torque, high efficiency and low noise. Due to its user friendly design,the KBAC-24D is easy to install and operate. Tailoring to specific applications is accomplished via selectable jumpers and trimpot adjustments, which eliminate the computer-like programming required on other drives. However, for most applications no adjustments are necessary. Main features include adjustable RMS Current Limit with I2t Motor Overload Protection. In addition, adjustable Slip Compensation provides excellent load regulation over a wide speed range. Power Start delivers over 200% motor torque to ensure startup of high frictional loads. Electronic Inrush Current Limit (EICL ?) eliminates harmful AC line inrush current and adjustable Linear Acceleration and Deceleration make the drive suitable for soft-start applications. The Ride Through feature provides a smooth recovery to the previous set speed during a momentary power loss and Regeneration Protection eliminates tripping due to rapid deceleration of high inertial loads. Standard front panel features include diagnostic LEDs for Power On and Control Status, a Start/Stop Switch and a Main Speed Potentiometer. Other features include a Barrier Terminal Block to facilitate wiring of the AC line and motor, adjustable trimpots (MAX, MIN, ACCEL, DECEL, COMP, CL, BOOST) and customer selectable jumpers (line voltage,motor horsepower, auto or manual restart modes, motor frequency, frequency multiplier, fixed or adjustable boost). Optional accessories include a Forward-Stop-Reverse Switch, Auto/Manual Switch, Power On/Off Switch, Signal Isolator /Run Relay and a Multi Speed Board. Quick-connect terminals are provided for easy installation of all accessories.
 
At least for me, not having a brake resistor is a deal breaker. I am too used to having the machine stop when i tell it and not coast down over a few to several seconds. For one, it would make threading to a shoulder almost impossible. others may say this is no big deal. Do not consider my word gospel, just my opinion.

i for sure see the appeal of something that just plugs in.
 
Fair enough. I do appreciate your opinion. I’ll continue searching to see if I can find the best combination of simplicity and functionality.

Thanks again.

Karl_T said:
At least for me, not having a brake resistor is a deal breaker. I am too used to having the machine stop when i tell it and not coast down over a few to several seconds. For one, it would make threading to a shoulder almost impossible. others may say this is no big deal. Do not consider my word gospel, just my opinion.

i for sure see the appeal of something that just plugs in.
Click to expand...
 
Karl,
id like you opinion on the Teco L-510 1 Hp. Also, can I safely run a break resistor with a screw on Chuck?
 
Looks like a nice enough VFD but I have not used that particular brand.

I will defer to others about the screw on chuck. But yep, maybe that's a problem.

<EDIT> test if they have customer service. Text on the chat line for the size of the pot for remote speed control. Its likely 10K ohm but may be 5 or even 2.
 
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