Sound and vibration signal simulator box

[irfan789]

When i am giving 0 to 5volt output from sbRIo to the  sound and vibration signal simulator box to control the speed

the fan rotates very slow but when i a potentiometer present on board(manual control) there is  linear relation with the input and output...

Max RPM being 6000

when i give output from the controller previously it was running on 4000 after few days 3000rpm and then 2400 now its very low and almost 1000 RPM 

may i know the solution to rectify this...

[simyfren]

Hi,

have you measured the real output voltage?

Simyfren

[irfan789]

 output at the output pins of sbRIO's give expected voltage  which i am giving in the program but still the fan is running under very  RPM

[simyfren]

If is the fan controlled by output voltage and you have corrected value of voltage, there is no problem in code but problem is with fan.

Simyfren

[irfan789]

ya previously with the same code my fan use to run properly but now its giving weird output