Cognex In-Sight 3400, Manual

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Installing the In-Sight
®
3400 Vision Senso r
NOTE When using the In-Sight 3400 sensor with the Breakout Cable, the polarity of the input
trigger (pins 2 and 3) is not critical. However, when using the optional Breakout or I/O
Expansion Modules, the polarity of the TRG+ and TRG- terminals should be observed.
Figure 4-1: Acquisition Trigger Input Schematic
4.2.2 High-Speed Outputs
In-Sight 3400 sensors feature two built-in, high-speed outputs.
Table 4-5: High-Speed Output Specifications Table
SPECIFICATION DESCRIPTION
Voltage 28V maximum through external load.
200mA maximum sink current.
OFF state leakage current 200 µ A maximum.
External load resistance 120 Ohms to 10K Ohms.
Current
Each line rated at a maximum 200mA, protected against over-
current, short circuit and transients from switching inductive loads.
High current inductive loads require external protection diode.
Both of the high-speed outputs are NPN (pull-down) lines. The external load should be
connected between the output and the positive supply voltage (<28V). The outputs pull down to
0V when ON, which causes current to flow through the load. When the outputs are OFF, no
current flows through the load.
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