Matrox 4Sight EV6 - Page 102

102 Appendix D: Migrating auxiliary I/O connections from Matrox 4Sight GPm to Matrox 4Sight EV6
If the values above cannot be achieved, you will need to re-wire the sinking device
in a typical complimentary sourcing-to-sinking connection. The diagram below
illustrates the difference between connecting a sinking field device to Matrox
4Sight GPm and connecting it to Matrox 4Sight EV6, without using a pull-up
resistor:
 Note that with the above wiring modification, there will be a logical inversion to
take into consideration. The Matrox 4Sight EV6 auxiliary input will now detect
an ON condition when the sourcing field device is closed.
Up to 24V
+
–
AUX_INn+
AUX_INn-
Matrox 4Sight GPm auxiliary inputs
in a sinking configuration
PREVIOUS: Matrox 4Sight GPm auxiliary input wired to a sinking field device requiring a pull-up resistor
Up to 24V
+
–
AU INnX_ +
AUX_ n-IN
Matrox 4Sight EV6 auxiliary inputs
in a g configurationsourcin
NEW: Matrox 4Sight EV6 auxiliary input wired to a sinking field device without a pull-up resistor
OUT
NPN field devicesinking
+V
-V
OUT
NPN field devicesinking
+V
-V
Sensing
circuit
Sensing
circuit