Retrofitting a Deckel FP5NC

Inspired by Marks thread on retrofitting his Maho I have decided to get back on track and begin the process of converting my machine to LinuxCNC.
The 10 HP DC spindle motor is dead and I purchased a 3.7/5.5KW Yaskawa UAASKA-06CA1 motor and will be powering it with a DuraPulse GS3 VFD.
The gearbox is 6 speed and is shifted using 2 DC motors. These motors rotate a cam mechanism that drives the gears to the 3 positions on each shaft. One motor drives to engage 3 engagement positions and the drive to two engage positions and neutral. The motors are reversible but the cam systems allows the motors to drive continuously in one direction without hitting a hard stop. Each motor has 3 switches for shift logic.


Other details:
DC servo axis drives, tachometer feedback, driven by Bosch TR25 amp, ±10VDC speed signal
Direct position feedback from 20 micron glass scales, output signal is sin / cos (will need to convert via EXE board for LinuxCNC)
Scales have home index position.
Each axis has 3 limit switch positions, the first to engage stops rapid feed, the second one is the actual end of travel limit switch and the 3rd (over travel) is tied into the E-stop chain.

I have schematics but only in German.

The first hurdle will be reverse engineering the E-stop chain.

Attached are the schematics for most of the relay logic of my machine, since I am an idiot mono-lingual american....... Would someone be willing to translate these signal lines for me?

Hi Gernoff,

I hope you can read my hand writing. If any of it is illegible to you, please let me know.



Are you sure you need to reverse engineer the E-Stop chain? On the MAHO this is all hard wired with micro switches and relay contacts. I just had to connect the output of that into the input of LinuxCNC. On yours is the PLC integrated into the exisitng CNC control, or is it a separate unit which you can leave in and treat like a black box, as with my MAHO's hardware solution?

Mark