Huanyang VFD controller plugin

[cleyte]

Hi Rognets,

Good to hear that the Max485 works as I am still waiting for mine to arrive so I can install it on the board.

BTW, can you check to see if tou have the two relays in the lower left corner of the board.  They are labelled as GDQ1 and GDQ2.  I am missing GDQ1 and would like the specs on it.

There is a link to a picture of my board and missing parts in a previous post.

Thanks, Clayton

[rognets]

Clayton

I have looked and there is one relay only, the one on the Right Hand side. The one to the left is vacant.

Steve

[cleyte]

Thanks.

The relay  on the right is missing from my unit.  I guess it doesn't matter as long as there is one?

Clayton

[mhasting2004]

You don't need either for the VFD to function. They are for auxillary outputs.
One is a single throw double pole and the other a single throw single pole from, memory. Check the manual its clearly descibed and shown on the schematic.

[cleyte]

Thanks for the information - it is good to know that all is well with my VFD.  I will definitely take a closer look at the manual as you have indicated.

I am still waiting for the Max485 unit to arrive so that I cann complete the repair.

Clayton

[mikie]

My max485 chips have arrived so can someone tell me where pin1 is so I can work out which way to orientate the chip on the board

Thanks
Michael

[DMBGO]

Hi,
Here is a link to the datasheet, the pinouts are on page 18
Cheers
Dave
http://www.datasheetdir.com/MAX485+download

[mikie]

Sorry my question was not correctly worded. I'm after the orientation of the chip on the VFD board. Which way do I place it on there to solder it on. My assumption is the chip has a dot to indicate pin one.

[DMBGO]

I haven't got mine apart at present, but the rule for circuit boards is that all chips face the same way, so if there is another chip on the board, you with the same orientation, you should put this chip around the same way.
I'll take the cover off mine and check anyway in a little while.

[justinc1981]

hey guys

just wondering if my computer had a serial port on board can i just use a 9 pin solider on connector and solider 2 wires with the connector and attach them to the VFD ?

if i can do that do u know which pins i use ?

thanks

Justin