What kind of switch machine is he driving with this?
Twin coil, tortius, reversing stall motor,
Jim
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On Dec 27, 2018, at 6:16 AM, jimalbanowski <jimalbanowski@...> wrote:
HP, crew:
If HP is seeing a nominal 5V on the output pins no matter what has been sent to it it's not seeing commands to turn on the output ie pull to ground.
But wait... a couple more basic questions on the output boards just to little more sure how we need to check.
HP, these boards were bought built, as kits or total DIY? Where they built as a standard on is pill to ground configuration and not to source current? Different transistors and jumper wire position. Standard is 2n4401 and jumper at J1. Alternative is 2n4403 and J2 to source current.
Then there is the mother board, if you use source cards there is an option for different voltage for the current source but you still need it connected to 5V for the output transistors to work when sinking. I doubt that it's the problem but check the wiring around the Alternate J2 jumper and wiring. (pg 17-3 and 4 in my user 3.0 manual).
Since we have two cards and I assume you've swapped the two cards changing their addresses we don't likely have component failure.
More later if needed... after the coding check and verifying how the output is set.
Jim Albanowski
