How too wire up spindle encoder

andre

andre
Hi I was just wondering if anyone can point me in the right direction on how too wire the spindle RPM encoder.
 

Attachments

  • received_2366120276846836.jpeg
    received_2366120276846836.jpeg
    34.5 KB · Views: 17
  • received_2363575630362438.jpeg
    received_2363575630362438.jpeg
    62.9 KB · Views: 20
  • received_1101573723381899.jpeg
    received_1101573723381899.jpeg
    38.4 KB · Views: 16

andre

andre
No info on the sensor Unfortunately. It's original too the machine. The only info I have is the wiring.
 

masso-support

MASSO Support
Staff member
can you measure the min and max voltage levels on each output as the encoder is being slowly turned and switched between low and high states?
 

andre

andre
I can Measure thevmin max signal voltage voltage when I get home. I will be booking up the common to + and 0v to minus on my 12 volt supply. And try. Thanks for the support.
 

andre

andre
Okay well I could measure anything. So I decided too remove the encoder for a closer inspection. I found out it's just two Optical switches. I found the data sheet if I'm reading it correctly it wants 3 volts ?
 

Attachments

  • IMG20191117195820.jpg
    IMG20191117195820.jpg
    3.4 MB · Views: 8
  • Screenshot_2019-11-17-20-07-23-38.png
    Screenshot_2019-11-17-20-07-23-38.png
    371.7 KB · Views: 13

breezy

Arie
Staff member
Quote from andre on November 17, 2019, 9:13 am

Okay well I could measure anything. So I decided too remove the encoder for a closer inspection. I found out it's just two Optical switches. I found the data sheet if I'm reading it correctly it wants 3 volts ?

The max current for the diode is 3A but the operating current is 50mA, so you need a resistor in series with it to limit the current, based on the supply voltage connected to it. The 3v quoted for the diode is the reverse voltage, ie the max REVERSE voltage that can be applied before it is destroyed.

Depending on which unit you have the max voltage for the output section, for the integrated sensor it is 20v (Vcc) or for the photo transistor version 30v.

Until you tell us which unit is connected to the encoder (4 wire or 5 wire) we won't be able to inform you how to wire it up. The 4 wire version will probably have some circuitry back in the control box to detect the photo transistor switching.

Regards,

Arie.
 

andre

andre
There is no other encoder on the Machine. The Two opto switches RS 306-601 where connected too the old microcontroller. I assume then this system cannot be used with the Masso?
 

Attachments

  • IMG20190901141500.jpg
    IMG20190901141500.jpg
    3.3 MB · Views: 13

masso-support

MASSO Support
Staff member
putting a new encoder will be the way to go as trying to get the old encoder working will probably take more time and resources, also this might not even work with masso as you will need all the 3 encoder signals.
 

breezy

Arie
Staff member
Quote from andre on November 17, 2019, 11:17 pm

There is no other encoder on the Machine. The Two opto switches RS 306-601 where connected too the old microcontroller.

What I was referring to was that the spec sheet you supplied had two different types of opto switches on it.
  • 306-061 4 wire unit.
  • 304-560 5 wire unit.

As it was the 4 wire unit the old microcontroller would have had the necessary circuitry on it to extract the encoder pulses.

Regards,

Arie.
 

andre

andre
  • Okay I've got a lead on two of the RS304'560 opto switches with the inbuilt logic. If I where to replace the switches with those giving me a 5 wire output would this work? If it doesn't I can always get a Masso encoder. But I am enjoying mating old and new tech.
 

breezy

Arie
Staff member
Andre,

Basically 4 of the wires on the 304-560 go to the power supply and the 5th is the output to MASSO.

Whether it will work with MASSO I will leave to @masso-support to confirm.

But looking at the spindle RPM documentation MASSO requires 3 signals and your original setup provided 2 signals.

The MASSO documentation doesn't supply much information as to how MASSO uses the signals so the only thing I can suggest is to purchase MASSO's encoder.

Sorry I can't be of any more help.

Regards,

Arie.
 

cncnutz

CNCnutz
Staff member
Hi @andre

Masso uses a quadrature encoder which is A,B & Z signals with the A & B being 90 degrees out of phase and the Z outputting a pulse once every revolution.

You require 3 optical sensors to make this work and then you will need some circuitry to interface with Masso and even then it might not work.

This site about encoders might help

https://www.dynapar.com/technology/rotary-optical-encoder/

Cheers

Peter
 
Top