1Vpp Encoder to Mesa 7i33

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22 Feb 2013 02:39 #30422 by vmipacman
Replied by vmipacman on topic 1Vpp Encoder to Mesa 7i33
I have Heidenhain linear scales that output 11uApp and I found Heidenhain EXE 602 interpolation boxes on ebay for 60.00 each. Not sure what you need for 1Vpp output but it may be available fairly cheaply used compared to the Heidenhain price. Sorry, thats the only information I have.
Paul

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24 Feb 2013 11:49 #30512 by andypugh
Replied by andypugh on topic 1Vpp Encoder to Mesa 7i33

I just proceed with Hiperface encoder RS485 interface with positive results. Its in principal easy to understand and implement into HAL..

Can you give more details? Is this something that could be a released HAL component?

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25 Feb 2013 04:03 - 25 Feb 2013 04:15 #30536 by pavel7890
Replied by pavel7890 on topic 1Vpp Encoder to Mesa 7i33
yes, Iam developing a HAL component for Hiperface. Sure I can provide it when finished.

The code is very rough now, but Iam able to read absolute position and some other status information too. Since its only 9600bd RS485 interface it can not be used for 1ms servo loop, but just for commutation setup after power on.

I plan to use 7i44 serial interface for encoder connection. Lately I could use some help with customization of 7i43 firmware for UART communication with selected port(s). I tried firmware compilation with Webpack 9.2i, but Iam not sure if done correctly. Maybe some sample of prj file could help.
Last edit: 25 Feb 2013 04:15 by pavel7890.

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21 Mar 2013 04:00 #31650 by pavel7890
Replied by pavel7890 on topic 1Vpp Encoder to Mesa 7i33
I just finished the IC-NV chip for sin/cos interpolation initial testing. It proved its functionality for 16-fold interpolation.

Iam going to design a production PCB.

If anyone is interested having sin/cos encoder needs to be quadrature signals, please let me know. I can therefore design PCB with universal features.


Briefly about ic-nv. For 16-fold interpolation, max. input frequency is 200kHz. For instance you can have servo with 3000RPM, 2048 sin/cos encoder, in total 2048 * 16= 32768 * 4 = 131072 PPR, which is insane!
The following user(s) said Thank You: coolfox

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06 Jan 2016 12:31 #67963 by coolfox
Replied by coolfox on topic 1Vpp Encoder to Mesa 7i33
Pavel have you made this pcb's fo IC house interpolator? I would be interested

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06 Nov 2017 23:40 #101473 by er_toma
Replied by er_toma on topic 1Vpp Encoder to Mesa 7i33
Hi,
it’s possibile have the pcb project?
i have some trouble with heidenhain liner scale
LC 483...

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16 Nov 2017 16:10 #101902 by uli12us
Replied by uli12us on topic 1Vpp Encoder to Mesa 7i33
You can buy a evaluation-Board from Ichaus.
www.distrelec.biz/en/demo-board-bit-ic-h...c-nv-demo/p/17350856
www.ichaus.de/upload/pdf/MHL200_EVAL_MH2D_evalmanual_A1en.pdf

If you want to use a small board you can use this chinese adapter boards and and a simple experimental
PCB with some Resistors and jumpers.
www.ebay.com/itm/50Pcs-SOP20-SSOP20-TSSO...verter-/351871730602
www.ebay.com/itm/20pcs-SOP20-SSOP20-TSSO...p2047675.c100623.m-1
I think, you cant beat this price with an individual made PCB.

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16 Nov 2017 16:24 #101903 by uli12us
Replied by uli12us on topic 1Vpp Encoder to Mesa 7i33
Sorry, the false ev-Board
Here is the right, but the other have the same, what you get with the chinese adapters.
us-shop.ichaus.com/ProductDetails.asp?ProductCode=iC%2DNV+EVAL

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11 Aug 2018 12:04 #115880 by vre
Replied by vre on topic 1Vpp Encoder to Mesa 7i33

I just finished the IC-NV chip for sin/cos interpolation initial testing. It proved its functionality for 16-fold interpolation.

Iam going to design a production PCB.

If anyone is interested having sin/cos encoder needs to be quadrature signals, please let me know. I can therefore design PCB with universal features.


Briefly about ic-nv. For 16-fold interpolation, max. input frequency is 200kHz. For instance you can have servo with 3000RPM, 2048 sin/cos encoder, in total 2048 * 16= 32768 * 4 = 131072 PPR, which is insane!


I want 3 pieces sin cos to quadrature

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11 Aug 2018 16:01 #115892 by OT-CNC
Replied by OT-CNC on topic 1Vpp Encoder to Mesa 7i33
PCW,

Did you ever develop this?

We intend to make a little DSPIC interpolator but have not finished it yet



I have couple of RSF/Heidenhain sine cosine mili volt scales I'd like to hook up. Not a big fan of getting the massive converter boxes off fleabay. It would be nice to have a small plug and play 3 or 4 axis board that would play nice with the rest of the Mesa hardware.

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