Manual NI Vision NI 17xx (page 77 of 90) (English)

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Appendix B Troubleshooting

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 5, 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 5,

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.

There is No External Lighting Strobe

Possible causes and solutions:

• If you have configured the NI Smart Camera for triggering in MAX or

Vision Builder AI, verify that the smart camera is receiving a trigger.

This can be verified by checking that the IMG ACQ LED on the smart

camera illuminates when a trigger is provided on the TrigIn+/IsoIn(0)+

and TrigIn–/IsoIn(0)– pins. If you are not receiving a trigger, refer to

the No Trigger is Received troubleshooting section.

• If you are using the 24 V strobe output, verify that there is enough time

between frames for the strobe output to fully turn off before being

re-enabled. The required time will vary with the load conditions, but is

typically a few milliseconds. If a faster response is necessary, use the

5 V strobe output.

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NI Vision NI 17xx Manual

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