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Search took 0.00 seconds. Search: Posts Made By: Gerald D
Forum: 70. Control Systems Sat 11 October 2008, 14:06
Replies: 40
Views: 45,679
Posted By Gerald D
I can see where programming the speed can be...

I can see where programming the speed can be useful, such as when cutting across the grain versus with the grain, or a V-cutter going fast on a shallow cut and slower on a deep cut. But everybody...
Forum: 70. Control Systems Sat 11 October 2008, 11:23
Replies: 40
Views: 45,679
Posted By Gerald D
. . . . . . . more likely another parameter more...

. . . . . . . more likely another parameter more to be concerned about during programming.

When you cut a test pattern first in MDF and then in oak, do you really want to have to change the...
Forum: 70. Control Systems Sat 11 October 2008, 09:33
Replies: 40
Views: 45,679
Posted By Gerald D
How did you think we controlled the spindle? By...

How did you think we controlled the spindle? By the way, the digital readout of the VFD shows the speed dialed by the potentiometer knob. It is a very simple setup.
Forum: 70. Control Systems Sat 11 October 2008, 08:01
Replies: 40
Views: 45,679
Posted By Gerald D
We use the J7 connector (bottom right of the...

We use the J7 connector (bottom right of the PMDX) for spindle on/off and a simple potentiometer and knob for spindle speed (like a volume control). Mach3 turns the spindle on and off, while the...
Forum: 70. Control Systems Fri 10 October 2008, 23:36
Replies: 40
Views: 45,679
Posted By Gerald D
For those wanting 5 independent drives from the...

For those wanting 5 independent drives from the PMDX-122, I believe a 5th drive could be configured for step and direction off connector J8 at the top right:...
Forum: 70. Control Systems Fri 10 October 2008, 14:20
Replies: 40
Views: 45,679
Posted By Gerald D
Have not needed it, or even considered it for our...

Have not needed it, or even considered it for our machines. Our squaring is done once mechanically (with shim washers behind the v-rollers) and the machine happily maintains that square from day to...
Forum: 70. Control Systems Fri 10 October 2008, 12:41
Replies: 40
Views: 45,679
Posted By Gerald D
You could theoretically drive a pair of G203V's,...

You could theoretically drive a pair of G203V's, for your x-axis, off one "channel" of the PMDX-122. (The PMDX-122 user manual says it can sink or source 16mA, each G203V needs about 2.5mA). The only...
Forum: 70. Control Systems Thu 05 June 2008, 05:43
Replies: 40
Views: 45,679
Posted By Gerald D
My approach is "one button kills all". Yes, if...

My approach is "one button kills all". Yes, if somone has a more complex logic in the E-stop process, then the the logic provider must be kept alive.
Forum: 70. Control Systems Thu 05 June 2008, 02:51
Replies: 40
Views: 45,679
Posted By Gerald D
My thought process on the e-stop logic is as...

My thought process on the e-stop logic is as follows:

- It is important to cut the pulse stream for an e-stop because the power supply capacitors take a while to discharge (motors will still want...
Forum: 70. Control Systems Wed 04 June 2008, 13:25
Replies: 40
Views: 45,679
Posted By Gerald D
My PC's USB port doesn't drive a PMDX-122 either....

My PC's USB port doesn't drive a PMDX-122 either.

A 9V battery does a good job for a test though.
Forum: 70. Control Systems Tue 08 January 2008, 19:41
Replies: 40
Views: 45,679
Posted By Gerald D
To summarise: One "channel" of a PMDX-122 can...

To summarise: One "channel" of a PMDX-122 can drive 2 Motors only if one also uses 2 Gecko G203V drives. Cannot use 2 G202 drives. Cannot use only one drive for the 2 motors.
Showing results 1 to 11 of 11

 
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