Best Mesa Cards/ Combo for DELTA ASD-A2 drive/motor

Cool, you got 20 mins to tune my brother tc225....

ihavenofish wrote: Cool, you got 20 mins to tune my brother tc225....

Yes of course, it just takes over 20 hours and 3 planes to get there !
Jokes aside, i would love to live there, i just hate the cold, but still i like it there, a lot.

ihavenofish wrote: Should be clarified here, you don't need linear scales, you just need the encoder on the motor.

Thanks ihavenofish, you are correct. The servo motor encoder is enough. With the Delta A2 I would probably still prefer step/dir signals to the drive.

@Bandar: It really depends on what your needs are.

- How many axis do you need?
- How is the spindle VFD controlled? 0-10V or step/dir
- How many inputs / outputs in total (limit switches, sensors, spindle etc)
- Are your sensors / switches PNP or NPN type? Is the output signal +24V (PNP) or GND (NPN)?
- Do you want isolated inputs and isolated outputs? More flexible but limited e.g. 7i95 / 7i97
etc.

Isolated inputs can have a positive or negative common for sourcing or sinking input applications. Isolated outputs allow sinking, sourcing combinations of both.

Examples:
7i76e: 5 axis step/dir, 1 spindle output 0-10v with 1 encoder, 16 outputs (sourcing, they provide 24V), 32 inputs (sinking), 2 x 25Pin expansion connectors for daughtercards (e.g. 7i85 4 channel encoder card

7i95: 6 axis step/dir with 6 encoder, no dedicate spindle output, 6 isolated ouputs, 24 isolated inputs, 1 x 25Pin expansion connector for daughtercard.

The Delta A2 and many other servo drives I know, require sinking outputs to trigger their DI (digital input). Servo On, Brake off, Alarm Reset etc. The 7i95 would allow direct wiring, but is limited to 6 outputs. The 7i76e would require relays to provide sinking outputs. There is a special 7i76ed (which has sinking outputs but they are all sinking), so if you need sourcing outputs (24V) that would required a relay as well.

I hope I didn't confuse you, but as you can see .... it all depends on what you need. There are quite a few Mesa card combinations to accomplish what you need.

I would write down answers to all the questions above and try to find a Mesa card that matches the majority of our requirements. The rest can be done via relays or expansion cards (25 Pin or Smart Serial).

Thanks guys for the support you are giving me based on your experiences. This way I feel I can do it. (For clarification: this build is new build not a retrofit).

@ihavenofish, thank you for clearing that up. I was completely confused about which encoder it should be connected to the Mesa card. However, there is one thing that bothers me, why do I have to connect the motors encoders in the Mesa board? The Delta Servo drive has a motor encoder input in the drive itself. If I used 7i76 step/dir do I have to connect the motor's encoder in the 7i76?
Here is an example for the ASDA-A2

This is another Servo drive company called INVT (I like this servo motor drive because they has the same price as DELTA servo drive price, except that the DELTA motor has 20bit encoder and the INVT has 23bit motor encoder) If you could give me your opinion on those two drivers that would be nice.


@0x2102 , thanks for giving me some idea. To answer your questions:
- How many axis do you need?
I need 4 axis for now. Two for the Y-axis (one is slave), one for the X-axis and one for the Z-axis. later (in the future) I would like to make 4th and 5th axis table.

- How is the spindle VFD controlled? 0-10V or step/dir
About the spindle. I will buy the ATC JGL-80/2.2R30-20 (I will be using rack with tools holder) The manual for the ATC spindle is attached. The VFD is simphoenix e550 VFD (it has 0-10v and modbus)

- How many inputs / outputs in total (limit switches, sensors, spindle etc)
I haven't bought any limit switches yet. But one limit switch for Y-axis , X-axis and Z-axis
Also, I bought MARPOOS touch probe T25G

- Are your sensors / switches PNP or NPN type? Is the output signal +24V (PNP) or GND (NPN)?
I'm open for suggestions

- Do you want isolated inputs and isolated outputs? More flexible but limited e.g. 7i95 / 7i97
Not sure.

I hope that answer most of it

Regards,

1) I bought so far HIWIN linear guides for all my axis.
I bought THK Ball screw:
2) For Y-axis THK BLR3232 rotary ball screw.
3) For X-axis HWIN 2020 ball screw
4) For the Z-axis THK SBK 1616 ball screw
5) Aluminium 4080 extrusion profile and 80160 for my gantry.
6)MARPOSS

Bandar wrote: 1) I bought so far HIWIN linear guides for all my axis.
I bought THK Ball screw:
2) For Y-axis THK BLR3232 rotary ball screw.
3) For X-axis HWIN 2020 ball screw
4) For the Z-axis THK SBK 1616 ball screw
5) Aluminium 4080 extrusion profile and 80160 for my gantry.
6)MARPOSS

Those are parts you buy when building a 5 ton machine, and a fast one at that!
So aluminium extrusion is to weak for those parts, as the ballscrew alone will weigh more than the extrusion.
Still, very nice parts, for sure.