Pot and switch types for remote VFD

Hi Ropata,
you are going to need maintained contact or latching switches for the VFD you have chosen.
i installed the same type of VFD on my shenwai sw 900b, but mine is the 2.2Kw (3hp) version
a 10K potentiometer will work fine.
as far as switch rating is concerned, the voltage and amps are low when you use the DCM power
24volt/ 5 amp rating would be more than sufficient for the switches
Yes, Mike. At first I misinterpreted the poor installation manual drawings, understanding the wiring diagram to require momentary switches. Turned out that was wrong... Maintained contact (on/off, like a house lighting wall switch) or latching (for power outage safety) switches are needed.
 
Last edited:
Hi Ropata,
you are going to need maintained contact or latching switches for the VFD you have chosen.
i installed the same type of VFD on my shenwai sw 900b, but mine is the 2.2Kw (3hp) version
a 10K potentiometer will work fine.
as far as switch rating is concerned, the voltage and amps are low when you use the DCM power
24volt/ 5 amp rating would be more than sufficient for the switches
Thanks Ulma. And am I correct to have to install the jumper on the J1 connectors?
 
yes sir, 1&2 are "jumped" :) when you install the external pot
 
If it's like my Huanyang you may use momentary switches but maintained switches will also work.
 
If you want:
Speed control...Pot
Forward-Reverse...Toggle or Rotary Switch
Start... Mom Push button
Stop... Mom Push button
The DPDT toggle shown shown has a center-off position so switching between forward and reverse shuts off the drive, and requires pressing Start again.
Different manuals vary in whether the VFD has +12VCD or +24VDC to power the remote relay.

K2n

VFD Remote.JPG
 
I don't understand why you would want to complicate it by using a relay. This VFD out of the box is designed to use 3 wire control just like a typical motor starter which consists of a Normally Open Momentary "Start" Button and a Normally Closed Momentary "Stop" button. There are some VFD's that do not directly support 3 wire control, the Teco FM50 for example but this is not one of them. The diagram above in post #8 is from page 37 of the owners manual that I have. It is exactly how my Powermatic 30 belt sander is hooked up (except I didn't bother with the reverse button connected to D2). It has a momentary buttons as listed above. The one I have is a 2.2kw Type - HY02D223B
 
Even though the manual for my Huanyang shows the D1/D2/D3 Fwd/Rev/Stop schematic with momentary push buttons, it didn't work that way in the actual controller. Also the +24VDC output was available in my controller, but not in the manual. I have at least 4 different manuals, purported to cover the same controller, but with different control terminals.

Ken
 
Finally got a chance to try setting it up properly and the bugger won't do momentary switches, looks like I need latching switches. Also wondering how to get the speed spread over the whole turn of the 10k pot I have, I get to full speed in the fist quarter turn?
 
Back
Top