National Instruments NI Vision 17 Series, User Manual

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Appendix B Troubleshooting
• You have properly configured the maximum light settings in MAX or Vision Builder AI. For
safety reasons, the default configuration of the smart camera does not enable lighting until
you configure the maximum lighting current settings that are appropriate for your light.
• You have enabled the Direct Drive lighting controller in MAX or Vision Builder AI.
• The smart camera is receiving a trigger if you have configured the smart camera for
triggering in MAX or Vision Builder AI. This can be verified by checking that the IMG
ACQ LED on the smart camera illuminates when a trigger is provided on the
/IsoIn(0)+ and TrigIn-/IsoIn(0)- pins. If you are not receiving a trigger, refer to the
No Trigger is Received troubleshooting section.
• There is a short circuit wiring condition. If the smart camera detects a short circuit wiring
condition, it will disable the Direct Drive until the condition is cleared and the acquisition
is reinitialized.
In the event that the Direct Drive lighting controller detects an abnormal load condition,
such as a short circuit on the LED+ output, the smart camera stops image acquisition and
returns an error. The Direct Drive stops providing current to the light, and the smart camera
may restart. Ensure that your lighting wire connections are correct and/or reconfigure your
lighting settings in MAX or Vision Builder AI.
• You have requested an amount of current within the specified range of the smart camera and
within the maximum lighting current settings you configured in MAX or Vision Builder AI.
If your application requests more current than either of these two options, the smart camera
disables the Direct Drive until an allowable current level is requested and the acquisition is
reinitialized.
• If you are strobing, the on time required to illuminate for your requested exposure time plus
the lighting turn-on time does not exceed the maximum allowed strobe duration. Refer to
Chapter 6,
Image Acquisition , for more information.
• If you are strobing, the duty cycle does not exceed the maximum allowed duty cycle at your
requested frame rate. Refer to Chapter 6,
Image Acquisition , for more information.
• The on voltage of the light is within the specifications of the Direct Drive lighting
controller. Refer to Appendix A,
Specifications , for more information.
• The voltage drop of the light may have exceeded the maximum voltage or minimum
voltage requirements of the smart camera. The voltage drop of a light can vary significantly
with environmental conditions, such as temperature, current, and strobe time. Verify that
the voltage drop across the LED+ and LED- terminals is within the specified range of the
smart camera. Your light may need to be reconfigured by the manufacturer to bring the
voltage drop within the specified range of the smart camera. Refer to Appendix A,
Specifications , for more information.