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Chapter 2 Power and I/O
© National Instruments Corporation 2-3 NI 17xx Smart Camera User Manual
If you are using the Direct Drive lighting controller, the power supply
wattage must be sufficient to power both the camera and the light. The
power required by the light can be significantly more than the power
required by the smart camera.
Isolated Inputs
Caution Do not apply a voltage greater than 30 VDC to the isolated inputs. Voltages
greater than 30 VDC may damage the NI Smart Camera.
Caution The isolated inputs and outputs on the smart camera provide an easy means for
preventing ground loops that could degrade signal integrity. The isolation on the smart
camera is not safety isolation.
You can wire an isolated input to both sourcing and sinking output devices.
Refer to Figures 2-1 and 2-2 for wiring examples by output type. Refer to
Appendix A, Specifications, for current requirements.
Isolated inputs are not compatible with 5 V logic.
Figure 2-1. Connecting External Sourcing Output Sensors to Isolated Inputs
Sensor
Power
Sensor
Common
PNP (Sourcing)
Output Device
NI 17xx
TrigIn+
IsoIn(0)+
IsoIn(1)+
TrigIn–
IsoIn(0)–
IsoIn(1)–
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