Intermec IF61

Chapter 5 — Using the IF61 GPIO Interfaces
IF61 Fixed Reader User’s Manual 119
Switching the High Side Using External Power
To use external power (5 to 48 VDC) to switch the high side,
connect the Ground pin to the ground system of the external
power supply, and connect the positive side of the external supply
to the +Output pin. The external indicator lamp is connected to
the corresponding -Output and Ground pins as shown in the
next illustration.
Switching the High Side With External Power
Driving a DC Relay to Control an AC Load
While the IF61 outputs are designed to switch DC loads, they
can drive relays that control AC loads. The next illustration
shows how to connect such a system to an IF61 output.
External
indicator
lamp
External
power
5-48 VDC
+
-
Ground
+Output
- Output