Project Context: I have built a bi-axial load applicator, which uses a linear induction motor to launch a carriage horizontally. Meanwhile, vertical velocities are achieved by allowing the impactor to free-fall from a set height. The travel length of the carriage is 6m and I have two panel mounts to connect the DAQ to the PC via 3 USB cables of various lengths which are supported by an AC-powered USB Hub (0.5m|6m|2m). I have developed a LabVIEW program, which until recently has been working as desired. Unfortunately, I have damaged the USB going from my PC to the first panel mount. Since then I have been experiencing some issues which I require assistance to resolve so that I can continue testing. The LabVIEW program is able to acquire and save the data during: Static drops (no horizontal velocity) Dynamic launches where the horizontal is manually generated by pushing the carriage. However when I use the linear induction motor to propel the carriage I have received the following errors: Error – 50808 @ DAQmx Start Task 7220002 Error – 50808 @ DAQmx Start Task 7220004 Error – 50808 @ DAQmx Stop Task 3590002 Error – 50405 @ DAQmx Start Task 7220002 Error – 50405 @ DAQmx Start Task 7220004 Warning - 50808 A USB transfer failed due to a transaction error reported by the USB host controller. This may be due to a fault in the system’s USB host controller, a cable or a USB device. Warning - 50405 No transfer is in progress because the transfer was aborted by the client. The operation could not be completed as specified. I have tried the following suggestions from these error codes but have not found a suitable resolution: Disconnect the USB cable, then reconnect it Remove power from the USB device, then reconnect it Try replacing or using a different power supply and/or USB cable Try connecting your device to another computer to verify device works Also could you let me know the difference between a DAQmx Start and Stop Task and what the numbers after this means? I would appreciate any feedback on suggestions to resolve this issue. Max

LabVIEW

Issues using DAQ to control a linear induction motor

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I'm using a three-phase LIM controlled by a variable frequency drive (VFD). I use the analogue outputs from the DAQ (0-10V) to adjust the thrust and frequency of the VFD.

Is the isolator board an NI product or is there any specific model you would recommend?

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LabVIEW

Issues using DAQ to control a linear induction motor

Re: Issues using DAQ to control a linear induction motor