Another Elumatec SBZ130

Hello,
my name is Benno, I'm new to the LinuxCnc-World. I want to try, to rebuild the project of tommylight. Elumatec SBZ130/01
Now I want to order the hardware but I can't get a 7I71, my question is, can I use 7I66-24 instead of this? I know it has half outputs but it should be enough. Do I need another bit file? I think, I can save up the extra relays.
tommylight wrote:

Will have to add a bunch of small relays as the brakes draw 0.68A and the 7i71 can deliver 0.3A per output, no big deal at all just more wires. That would take care of the field power having 28.6V and 7i71 has 5 to 28V outputs and i do not like pushing electronics to it's limits, much safer this way.

Is it just a "little" change in the hal files?

I'm happy about any suggestion and I hope you understand my english

Benno wrote: Now I want to order the hardware but I can't get a 7I71, my question is, can I use 7I66-24 instead of this? I know it has half outputs but it should be enough. Do I need another bit file? I think, I can save up the extra relays.
tommylight wrote:

Will have to add a bunch of small relays as the brakes draw 0.68A and the 7i71 can deliver 0.3A per output, no big deal at all just more wires. That would take care of the field power having 28.6V and 7i71 has 5 to 28V outputs and i do not like pushing electronics to it's limits, much safer this way.

Is it just a "little" change in the hal files?

Yes you can use 7i66, i wish i knew then, would have saved me quite some time and relays. It seems better to get 2 or 3 7i66 and not the 7i70/7i71. I do not recall how many inputs and outputs are used so not sure how many you would need, but beware that the firmware will have 6 SSI and 2 SSerial ports as the SSI are used for the serial absolute encoders that the SBZ is fitted with.
You do need a custom bitfile, should be in the topic you linked, thanks to PCW for providing it. Flashing it is about a minute of work.
And yes, some editing of hal files is required to change from 7i70/7i71 to 7i66.
M.F.G.

Thank you for your reply.
I will order tomorrow and then jump in the cold water. My plan is a 7i70 for input and a 7i66-24 for output, I need exact 24. But if I have somewhere a mistake in my mind, can I use the IO oft the 7I77?

tommmylight wrote: You do need a custom bitfile, should be in the topic you linked

That means, it does not matter for the Card/Bitfile which device is connected to the SSerial?

Benno wrote: But if I have somewhere a mistake in my mind, can I use the IO oft the 7I77?

Yes you can, use it for low current signaling, and inputs used as usuall.

Benno wrote: That means, it does not matter for the Card/Bitfile which device is connected to the SSerial?

Yes it does for some, not for 7i70/7i71/7i66.
Beware that the bitfile is for a 5i25 (should also work for 6i25 but wait for PCW's confirmation), and has 6 SSI on the 7i74 (you do need one) and 2 ports for 7i70/7i71/7i66. There is another SSerial on the 7i77 that can be used to connect another 70/71/66.
Did you check what drives/encoders/spindle does your machine use ?

Hi Tom, thank you for your support!!
I made some pictures for you, I think it is the same as yours. When I'm thinking on the encoder I get headache, they are all the same type but have different values. In the last row, the left value should be the count per revolution (there are some 1024 and 4096). But what means the second value: Anz. U (Anzahl Umdrehungen? Number of revolutions??) There I have a 1 on the spindle, the other are 64 and 4096. Do I use the direction pin on the long x-axis. I saw you have had some troubles with the encoder, but I can't follow it. I have to read it again.
Later, I will order the parts (6i25, 2x7i66, 7i70, 7i74, 7i77) and some mounting material. Then the next step is trial and error
The machine is in a bad condition, it is some years unused and stored on top of each other, many air hoses are broken. I hope the winter is long enough.

Benno wrote: I think it is the same as yours.

It sure looks like it is the same, but where are the other parts ? Mine was over 7 meters long and 5000KG heavy!

Benno wrote: When I'm thinking on the encoder I get headache, they are all the same type but have different values. In the last row, the left value should be the count per revolution (there are some 1024 and 4096). But what means the second value: Anz. U (Anzahl Umdrehungen? Number of revolutions??) There I have a 1 on the spindle, the other are 64 and 4096. Do I use the direction pin on the long x-axis. I saw you have had some troubles with the encoder, but I can't follow it. I have to read it again.

You are lucky, i had nothing to go on so it took a lot of reading and searching and reading and....
Seems like the encoders are also the same, so again you are lucky, you have a full working config for it. Even if they are not the same, it is easy to adjust for in the main hal file. Anz.U = my guess was the same as yours. And i did not use the direction pin, scratched my head a lot for it, tried it without it, it worked, so i moved on.
The issue with the encoder was as it usually happens, i was monitoring one of the encoders = the one that had a bad wiring = my bad, the rest was working properly but i was not monitoring them, so took a while to figure out my mistake.