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Forum: 701. Motor Drives Tue 29 July 2008, 07:51
Replies: 148
Views: 165,344
Posted By bob
Oops again. This is borrowed photo for...

Oops again.
This is borrowed photo for reference. See #103.
Forum: 701. Motor Drives Tue 29 July 2008, 07:15
Replies: 148
Views: 165,344
Posted By bob
I have dirct power line fan. My PMDX is...

I have dirct power line fan.
My PMDX is completely isolated from grounding. Even parallel cable does not have shielding (I wonder if it should be there). Signal cable shieldings bolted to Alu Plate.
Forum: 701. Motor Drives Mon 28 July 2008, 18:47
Replies: 148
Views: 165,344
Posted By bob
Thanks Gerald, Everything about grounding is...

Thanks Gerald,
Everything about grounding is crystal clear right now.
I should have checked pics more thoroughly.
Forum: 701. Motor Drives Mon 28 July 2008, 11:27
Replies: 148
Views: 165,344
Posted By bob
Oops, I mean to say two drives (pin 1) show...

Oops, I mean to say two drives (pin 1) show continuity with Alu plate but other two does not show continuity. That continuity comes through back plate of Gecko. Should I also provide path for ground...
Forum: 701. Motor Drives Mon 28 July 2008, 08:11
Replies: 148
Views: 165,344
Posted By bob
Gerald, Today I mounted Geckos (G203V) on...

Gerald,

Today I mounted Geckos (G203V) on Alu plate, two of them (pin1) does not show continity with Alu plate or back plate, it means there me be ground voltage difference with another two which...
Forum: 60. Wiring & Cable Management Sun 27 July 2008, 10:40
Replies: 107
Views: 130,579
Posted By bob
That's what I was thinking of, thanks.

That's what I was thinking of, thanks.
Forum: 60. Wiring & Cable Management Sun 27 July 2008, 09:44
Replies: 107
Views: 130,579
Posted By bob
WOW That's really fast, while I was still...

WOW That's really fast, while I was still browsing for answer.
Thanks Gerald for you INPUT.

It clears (Sigh) all dark clouds.
My main concern was should I connect Earth with this common ground....
Forum: 60. Wiring & Cable Management Sun 27 July 2008, 08:54
Replies: 107
Views: 130,579
Posted By bob
As I understand Control box and MM is grounded....

As I understand Control box and MM is grounded. My question is -

1. If ground is floating?
2. The MM lies on floor and Control box is mounted wall, which are Earth. Is this causing some electric...
Forum: 702. Power Supplies Mon 21 July 2008, 17:48
Replies: 41
Views: 55,429
Posted By bob
Thnks for care guys, You are right, mine is...

Thnks for care guys,

You are right, mine is center-tapped one coil.
Either single coil or two independent coil in both cases these should be on same core in multiple windings and in same...
Forum: 702. Power Supplies Thu 17 July 2008, 09:55
Replies: 41
Views: 55,429
Posted By bob
Thanks Heath, That's what I was suspecting....

Thanks Heath,

That's what I was suspecting. I've aleady found center common tap and now seperating that.
I also have to check voltage of both secondary coils as mentioned by Gerald.
Forum: 702. Power Supplies Thu 17 July 2008, 05:51
Replies: 41
Views: 55,429
Posted By bob
Hi, I got 25-0-25 V, 500VA transformer. I...

Hi,

I got 25-0-25 V, 500VA transformer. I want to use Unipolar Vexta pk296sg7.2, but now I find there are only 3 output wires Blue - Brown-Blue.
How to use parallel winding ? Should I peel...
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