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New Hermes Vanguard 4000 CNC depth set

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I just purchased a New Hermes Vanguard 4000 and have either created a problem in the software while practicing, or am overlooking a step in the tool zero depth set procedure. I have followed the manual carefully setting up the job and proofing the graphics. My first attempt went fine right up to turning on the motor and pressing start. I set the tool Z zero as the manual described with no problem, but when I pushed the motor start button nothing happened, so I thought I pressed the wrong button (red) and immediately pressed the green button below it not realizing it was actually the reset button - oops! I lost everything and after reading more carefully realized that the red button only arms the motor circuit and when "Start" is pressed, the motor starts automatically. Anyway, after I reloaded the job information and was satisfied with the graphics, I pressed the appropriate jog buttons to move the cutter a short distance over the plate away from home corner, and pressed the "Adjust Cutter" button to set the tool to Z zero to the plate surface. The spindle servo motor made the normal sound of being ready, but the up and down cursor arrows did not lower or raise the cutter as before. Instead, the first touch of one of the vertical arrows brought up one of the data screens and subsequent pressing of the arrows increased or decreased the value that the cursor was on and the spindle did not move. The manual doesn't specify a particular screen to be in when pressing the "Adjust cutter" button, and I don't remember which screen I was last in when it worked the first time. I thought I was in the graphics screen, but no luck after trying several or all setup screens. What have I done, or not done, or forgotten to do?

I did sucessfully finish the job by manually rotating the spindle servo knob attached to the vertical screw after activating the "Adjust Cutter" button and following the touch-off procedure. That proves that the vertical servo and all other systems are working fine.

Several of the keyboard keys have to be hit quite hard to respond due to it's age or past environment. If I can find a new keyboard that works with this system I should replace it, or a whole new computer and software upgrade would certainly work if anyone has a recommendation. I havent seen any yet. The current system has 18 fonts and ornimentals, so it's well equipped for it's age.

Any help or information greatly appreciated.

Woody

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