Encoder Help

testyourdesign

testyourdesign
@dap-1750 I bought the same one but have not hooked it up to my spindle yet. Hoping it will allow me to do rigid taping and get RPM through Masso. Have you figured out how to wire it up yet?

Stephen Brown
 

dap-1750

DAP 1750
I followed masso documentation it is not working I have asked several times in the Forum and straight to support about A B & Z if they need to be set higher low and have not got no response. Still waiting on support to respond. The first Encoder did not work masso said it had to have a 5 volts Plus to work. It was an Omron . Masso documentation does not even refer to a make or model of a manufactured encoder that will work that's all we can do is just guess because I'm not no electronics Guru that understands all of this stuff so all I can do is as read if it looks good buy it.
 

testyourdesign

testyourdesign
Well @dap-1750 that's just not good enough for a Friday. So you tried to hook it up like they have it here?


Based on the diagram (attached) that came with my encoder it looks like we need to hook up the Omron E6B2-CWZ6C encoders like this:
  1. Brown Wire is connected to the same (+) DC power as Masso.
  2. Blue Wire is connected to the same (-) DC power as Masso.
  3. Black Wire is connected to Masso Encoder Connector Pin (1) input for A signal.
  4. White Wire is connected to Masso Encoder Connector Pin (2) input for B signal.
  5. Orange Wire is connected to Masso Encoder Connector Pin (3) input for Z signal.
  6. Braided wire is connected to Earth Ground.

Is that how you have it connected?
 

Attachments

  • Encoder-Diagrams.jpg
    Encoder-Diagrams.jpg
    672 KB · Views: 16

masso-support

MASSO Support
Staff member
@dap-1750 the connections are as @testyourdesign mentioned but as your encoder is an NPN type, you will need a pullup resistor between each encoder output and +ve of encoder power supply. At what voltage you are running the encoder on?
 

testyourdesign

testyourdesign
Quote from MASSO - Support on October 20, 2018, 4:12 am

@dap-1750 the connections are as @testyourdesign mentioned but as your encoder is an NPN type, you will need a pullup resistor between each encoder output and +ve of encoder power supply. At what voltage you are running the encoder on?

@masso-support my system operates on 12V DC. How do we determine the size of the pull up resistor? Will the same 5.6k Ohm resistor you show for the touch probe work with a NPN type encoder?
 

dap-1750

DAP 1750
I'm using the 24 volts that I'm powered the masso, I did as masso documentation, and it didn't work. I have been ask anybody I know for help with the calculations for the pull-up resistor I still don't know how to wire it once I have them. I have built many kinds of machines but I was given all instructions and it worked when finished. I can do with proper instructions. I don't have any electronic friends that I can ask these questions or ask for support or help with. Thanks for all the support from the group. I live in Florida and would like to connect with anyone that is into building CNC. I have a mazak GT 200 that I'm looking for work for.
 

dap-1750

DAP 1750
Ok, with 5000k the encoder stops reading at 3600 rpm, with 2000k it stops reading at about 2800 rpm all I have left in the kit is 10.000k. Do I try them.
 

Attachments

  • Screenshot_20181020-221332_Chrome.jpg
    Screenshot_20181020-221332_Chrome.jpg
    193.6 KB · Views: 15

dap-1750

DAP 1750
After more testing, still failing around 3300 rpm, I put 10k resistors in and trying two different encoders, I bought three encoder of the same make and model from three different vendors just because I have three different projects going on and sometimes you do get a bad batch. Unless someone has better information on this problem I'm saying that this encoder is not a good match. Still waiting for masso to make a recommendation on a make and model of encoder that will work with their unit. This is what happens. When you first start to spend with high RPMs the encoder reads close to correct within 15 to 20 seconds RPM starts to slow down on the screen until it comes to 0.
 

masso-support

MASSO Support
Staff member
  1. Firstly with encoders there are different types of signals the encoders can give and the wiring needs to be done after understanding each type and not one type of wiring will work on all types.
  2. At 24v about 5.6k Ohm resistor will be fine.

Got more info on the encoder input, the encoder inputs on MASSO can take a maximum of 8kHz frequency, anything above this will not work and you can calculate how much maximum frequency you with get with your setup as below:

Frequency = ((spindle maximum RPM / 60) * Encoder PPR) / 1000, here is a quick calculator that we made: https://www.masso.com.au/test-page/



There is also a way to replace the 3 optocouplers on MASSO to take this to 20kHz, let us know if this will be helpful and we will make instructions page.
 

testyourdesign

testyourdesign
That calculator and the instructions you provided are very useful. If I understand this correctly, the Masso optocouplers have an 8kHz limit, so if we're using a 100 PPR encoder the calculator shows that Masso will only be able to read up to 4800 RPM. I might need to upgrade my opticouplers also since my spindle runs up to 7500 RPM. @masso-support does the pull up resistor value have to change if since I use 12v DC?
 

testyourdesign

testyourdesign
Quote from DAP 1750 on October 20, 2018, 9:56 pm

I'm using the 24 volts that I'm powered the masso, I did as masso documentation, and it didn't work. I have been ask anybody I know for help with the calculations for the pull-up resistor I still don't know how to wire it once I have them. I have built many kinds of machines but I was given all instructions and it worked when finished. I can do with proper instructions. I don't have any electronic friends that I can ask these questions or ask for support or help with. Thanks for all the support from the group. I live in Florida and would like to connect with anyone that is into building CNC. I have a mazak GT 200 that I'm looking for work for.

@dap-1750 what part of Florida are you from? I live in Palm Bay Florida.
 

dap-1750

DAP 1750
My encoder is 100 ppr. I thought I had posted this for masso support.
Quote from testyourdesign on October 22, 2018, 10:55 pm

Quote from DAP 1750 on October 20, 2018, 9:56 pm

I'm using the 24 volts that I'm powered the masso, I did as masso documentation, and it didn't work. I have been ask anybody I know for help with the calculations for the pull-up resistor I still don't know how to wire it once I have them. I have built many kinds of machines but I was given all instructions and it worked when finished. I can do with proper instructions. I don't have any electronic friends that I can ask these questions or ask for support or help with. Thanks for all the support from the group. I live in Florida and would like to connect with anyone that is into building CNC. I have a mazak GT 200 that I'm looking for work for.

@dap-1750 what part of Florida are you from? I live in Palm Bay Florida.

Plant city.
 

testyourdesign

testyourdesign
@dap-1750 that's only a couple hours drive for us. I have a bench top Grizzly mill conversion with a MASSO and Home Built CNC router with Mach 3 setup in my garage. Would be neat to see how you got the Mazak wired up with Masso. Mazak make some very awesome machines.

BTW masso-support also mentioned that you need to use a 5.6K Ohm resistor connected between the input power and each of the three output pins. So I don't think the ones you have in your kit will work.
 

dap-1750

DAP 1750
The mazak is factory stock. I work in apopka and it's at a friends shop that makes model boat parts, Rossi sales of Florida Speedmaster products. I make carbs of the model engines very simple parts, I'm bench testing the masso before I build a small horizontal Mill with a tombstone rotary and want to get the controller working to it's potential. If you want to email me.

Familypowelllak18@gmail.com
 

masso-support

MASSO Support
Staff member
Top