How read Hall effect sensor output?

[clarkdave76]

DC motor with Hall effect sensor.

This sensor should be used to position the motor .
Can somebody help me how to read this signal .

Motor has 4 wires
- 2 wires for 12V DC input to start/stop motor
- 2 wires sensor positive, sensor negative

Our goal is to read this signal of the sensor into a PLC
with a fast input card 24VDC input 0.2ms reaction time.

Included link of the HES :

http://users.pandora.be/daveclark/doc/hes datasheet 3185.pdf

Link of the circuit motor :

http://users.pandora.be/daveclark/doc/motor.jpg

Our PLC works on 24VDC
motor works on 12VDC 0.3A (4A hits endstop)
6000rpm

I dunno if somebody can help me how I can getting started to read this signal and count the signal into the PLC.

regards Dave

 

[clarkdave76]

Actually my real question is, if I connect following wiring to the PLC I have a signal but this signal never changes.

Maybe my inputcard or my plcprogram has a to slow cycle to update his status.

 

[Skogsgurra]

Hello,

It is not possible to read the right part of your diagram.
Can you try to post a smaller picture. And in a new thread.
Red-flag this thread to remove it.

Gunnar Englund

http://www.gke.org

--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

 

[IRstuff]

Were you expecting something different?

You tied the sensor output to the positive voltage supply. You're supposed to tie the sensor positive to the PLC input, the sensor negative to ground. The sensor positive needs an external pullup, like a 5 Kohm to start.

TTFN

FAQ731-376

 

[blacksea]

Do you understand that motor must be rotate for changing of Hall sensor output?

 

[clarkdave76]

I found the solution

+24VDC----sensor+ ------- sensor- --------4k9ohm-----0VDC

before 4k9ohm wire to input PLC and this works perfect.

Thanks anyway for your help.

regards Dave