Need help in connecting a 12v dc motor with a capacitive sensor

[HELANSK]

I have a 12v dc motor speed controller (UK1133), and I want to connect a capacitive sensor (CR30-15DP) with it. I want to know please how could I do that? Thank you.

 

[btrueblood]

Really? You couldn't post a link to what those parts are, or give a diagram about what they look like? What do you want the sensor to measure?

googling your numbers, I got this as the second hit:

http://www.canakit.com/Media/Manuals/UK1133.pdf

Is that your speed control?

Do you see anything in that manual that suggests a point to connect a capacitive proximity sensor?

Sheesh, and I'm a mech type.

Is this your sensor? (also found in the top few lines of a google search):

http://www.autonics.com/upload/data/8-J-44-47_CR_en_100209.pdf

Presumably, you were looking for the prox to sense shaft speed? In that case you'll need a counter/timer display to pick up the prox output and convert it to an rpm signal. Try googling "counter/timer display"

Hint: you will need something attached to the shaft to give the prox sensor something to sense. Like a cam, perhaps.

 

[HELANSK]

I thought I have attached their datasheets, sorry about that. Yes, what you have found are the right controller and sensor. I want the sensor to sense the distance of an object, and when the object get closer to the sensor and the sensor sense that, the controller will stop. I want hint on this design. I want to know, for example, what additional parts, such as a power supply, etc.

Here are some specifications:

• Sensor (CR30-15DP): sensing distance 15 mm (+/- 10%)

o Power supply: 12v dc
o Current consumption: max. 15 mA
o Response frequency: 50 Hz
o Residual voltage: max. 1.5 V
o Control output: Max. 200 mA
o PNP wiring

• Motor:
o Voltage: 12 V dc
o Imax: 10 A

• Motor controller speed (UK1133):
o Power supply: 12 V dc
o Imax: 50 A
o Doesn’t have any additional input


Thank you for your help

 

[blacksea]

It seems that you need to design position loop including inner velocity loop, P (or PI) - filter and capacitive sensor as position feedback. Or another option can be using single axis motion controller with buid-in power amplifier and analog input for connecting analog position feedback - see Elmo digital drivers for example.

 

[waross]

Use a relay to stop the drive. Control the relay with the sensor.
Or, install the sensor between the driven object and the fixed object. When the driven object pushes the sensor up against the fixed object and destroys it, the motor will stall and stop.
Joking, but I did once see a similar installation of a limit switch on equipment that handled logs in a mill. It actually worked. (Once)


Bill
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"Why not the best?"
Jimmy Carter