Matrox Iris GT MIL, Installation And Technical Reference, Page: 112 / 256

112 Appendix D: Using the I/O signals and controlled- current output of Matrox Iris GT
Connecting to an inductive load device
To connect your Matrox Iris GT to an inductive load device, you must first
connect a high-voltage diode between them. The diode protects your Matrox
Iris GT from high voltage, caused when disconnecting from the inductive load
device.
You should connect the negative side of the load (anode) and a Matrox Iris GT
output signal to the external diode. In addition, you should connect the positive
side (cathode) of the load to a +24 V power supply. Connect the ground of the
inductive load device and the ground of your Matrox Iris GT to a common
ground. When the Matrox Iris GT output signal is enabled, the negative side of
the load is reduced to 0 V, and 24 V appears across the circuit.
o
Matrox Iris GT digital I/O
and power connector
Inductive
load
device
External diode
Sinking
input
GND
GND
+24V max.
AUX(USER)_OPENC_OUT0
1
1
Note that the output can
sink up to 100 mA.