Cognex In-Sight 5000 Series, Installation Manual

Page: 32 / 48

High-Speed Output - PNP Configuration
The Breakout cable can be used to connect high-speed outputs with a PNP-compatible PLC input, if a pull-up resistor
(for example, 2.2 kOhms 0.5W) is connected from the output to +24VDC. In this case, the resistor supplies 24VDC to the
PLC input. The output will pull the voltage down to 0VDC, turning off the PLC input. This creates an inversion, with the
PLC input ON when the vision system output is OFF, and vice-versa. Use an external NPN to PNP converter when this
inversion is not desired. For more information, refer to Breakout Cable Specifications on page 22 .
Figure 3-4: High-Speed Output - PNP Configuration
High-Speed Output - Relay/LED Configuration
The Breakout cable can be used to connect the high-speed outputs to a relay, LED or similar load. Connect the negative
side of the load to the output and the positive side to +24VDC. When the output switches on, the negative side of the load
is pulled down to 0VDC, and 24VDC appears across the load. Use a protection diode for a large inductive load, with the
anode connected to the output and the cathode connected to +24VDC. For more information, refer to Breakout Cable
Specifications on page 22 .
Figure 3-5: High-Speed Output - Relay/LED Configuration
20