Motor connection to SCB 68

[d4dexter]

Hi all,

I am trying to control a motor on/off. I can make a VI in labview but am not sure how a SCB68 works. I read the 323 pg labview help file as well as 104 page scb68 user manual. I am a mech Engg, so my electronics/electric concepts are a bit shaky.

Can you tell me which channels do I use to connect the motor. the motor is 3 V DC, very small, so I think I wont need any external power source. I will be very thankful to you for your time

Thanks

Dexter

Umich.

[S_Kanchap]

Hi Dexter,

You can connect any DIO pin to + of your motor and DGND to - of motor (the motor power ratring should not be more than terminal rating check manual) but first you need to configure yor daq device by using Measurement and explorer (assigne specidic DIO pin or port as output)

[Nicholas_B]

Hi folks,

Just as an addition to that, and to clarify for Dexter, the SCB-68 pinout is the same as the pinout for your DAQ board.  For example, if the digital line Port 0 Line 1 corresponds to pin 33 on your DAQ board, it also corresponds to pin 33 on the SCB-68.  As per the previous post, you can tie this line to your motor's positive supply line and tie a DGND pin to the motor's negative terminal. 

One thing to keep in mind is that most NI DAQ boards will supply 5V and very little current, so if your motor needs 3V or more current, you might need an extra stage (to divide down the voltage or bump up the current).

Regards,

Nicholas B

Applications Engineer

National Instruments