PMDX-134 Axis #3 doesn't work

[zkmiller]

Last year when I was first putting together my control box I assembled my PMDX-126, PMDX-107, and PMDX-134 as described in the documentation. However, one axis had no output. The other three worked fine. I wasn't sure if I had some how done something wrong. So I removed the 134 and wired the drivers to the 126 terminals. All worked well. About that time my medical issues distracted me from following up any further. When I started to revive my CNC router I decided to try the 134 again in hopes of reducing the amount of cabling inside the control box. It appears that the #3 axis has no output. I checked the ribbon cable and it appears good. I tried re-seating the 134 with the same results. Is there a way to test the ribbon connector on the 126 and/or the 134 to isolate the problem?

Zeke

[Steve Stallings]

The PMDX-134 is a passive board the routes wires to connectors, so any
problems would be failed connectors or cables.

Does the axis that does not move have torque that holds it stationary when
power is on? If so then the Gecko is getting power, but not control signals.

Unfortunately neither the Gecko driver nor the PMDX-134 have any indicators
that will help verify signals. You may be able to check signals with a meter
but it is not fun on the small ribbon connectors. Pin numbers are listed in
the manuals for these boards. You can check the ribbon cable itself for
end to end connection of the same pin numbers.

PMDX will retest your boards and cables at no charge if you would like to
send them in to us.

[zkmiller]

I think I'll take you up on that. I will send you the 126, 134 and the ribbon cable.

I will email for details on shipping.

Zeke

[Steve Stallings]

Problem identified. The ribbon cable had an open signal.

[zkmiller]

I want to express my gratitude for the your patience and support in getting my issue resolved. I really like your products and especially your support. I received my tested boards and new cable today. I will have to wait a week to get it all installed and running - have to make a trip to Florida for my father in-laws 92 birthday - I hope I can last that long.

Again, thanks for the support!

Zeke