problem with connections of rotary encoder to ni 9411.

[M.P.Singh]

sir i have a rotary encoder of nemicon corp. model no. NOC-SP2500-2MD-10-100-00.

It has 8 wires for connections like this-

red   = +5v

black = 0v. common

green A         blue A bar

white B         gray B bar

yellow Z        orange Z bar

i connected it to ni usb module NI 9411 like this

red - 4

black - 12

green A - 1

blue A bar - 9

white B - 2

gray B bar - 10

yellow Z - 3

yellow Z bar - 11

but when i opens my daq it tells no device is connected or if i runs any example then it tells no power is given to device. i made only these connections. please tell me where is the problem in it . i am using rotary encoder first time.

[AnalogKid2DigitalMan · Accepted solution]

Do you have a 5-30VDC power supply connected to Vsup and COM?

-AK2DM

[M.P.Singh]

is it required to give externel supply to usb cartiage (module). but ni didn't provide any type of power supply equipment to us. or we have to give externel power supply 5-30 volt from any other source.

[AnalogKid2DigitalMan]

The manual says if you need to power the device (ie encoder) you need to connect an external supply. All the examples in the manual show an external supply.

http://www.ni.com/pdf/manuals/373506c.pdf

I re-read your original post again, it appears that MAX or LabVIEW cannot detect the 9411? Did you install the drivers?

-AK2DM

[M.P.Singh]

sir 

i can get now digital output from tha rotary encoder , can u send me any simple example of measuring angle or angular speed.

thank you for replying me. 

[AnalogKid2DigitalMan]

Under LabVIEW Help, select Find Examples and search on encoder. I think there are some vi's in there already written that are compatible with your hardware.

What solved your issue? Adding the external supply or installing the drivers (or both)? EDIT- I see you marked the power supply as the solution.

-AK2DM

Message Edited by AnalogKid2DigitalMan on 06-12-2009 07:43 AM

[M.P.Singh]

sir

i connected my encoder to labview and now it is giving us a value of 0 & 1. i tried with every example but it is not working.  somebody told me that it is a mechanical encoder so its vi will be different. i send u all the information about the encoder in mine first problem. which diagram will help me.

 or please send me a simple vi which is easily understandable. 

 please reply.