On Fri, Jun 17, 2022 at 1:13 AM Sebastian Kuzminsky wrote:
> I'm working with Petter Reinholdtsen trying to convert his Mazak VQC
15/40 to LinuxCNC,
> with Mesa interface hardware. We have all the 24V stuff working,
including the hydraulics
> and pneumatics, and we're getting data from the secondary resolvers on
the ballscrews.
> But we're having trouble getting the servo amps to respond.
>
> Has anyone interfaced Meldas TRS-50 servo amps to LinuxCNC? The
maintenance
> manual we found was not much help in terms of the interface..
i have never seen those ancient amps in person, but, imho, the
maintenance manual gives enough clues to get it running. and i see some
legacy from it in modern mitsubishi servos...
have you got READY-ON (RA1 relay should light up) and SERVO-ON (RA2 relay)
signals asserted?
i'm not sure, but it looks like you can set a speed command voltage with
the VR1 pot when the ST1 switch is flipped.
have you figured out the ZP1 pinout?
19,20 ER - despite the name looks like an analog voltage speed command
input to me...
3,10 ERR - analog ground
1 SC - speed control? input? not sure, if it's an input (analog or digital)
or an output...
7 ALM - alarm output
18 READY - either rdy-on input or output
13 SVON - should be servo on input
16 +24V (input?)
17 RG (digital ground?)
/dmitry
>
>
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