Using The Power Interface - Intermec IF5 User Manual

Chapter 5 — Using the IF5 GPIO Interfaces

Using the Power Interface

132
+ 12V
+ Output
- Output
Ground
External
relay
Driving a DC Relay: The external relay provides dry contacts for controlling
the AC motor.
Note: In many installations, the relay and AC wiring must be
placed in an enclosure that meets local fire code regulations.
The IF5 GPIO interface provides 12 VDC at 0.5A for powering
external inputs and loads, eliminating the need for an external
DC supply and simplifying the system installation.
The GPIO interface power has an internal thermal fuse that trips
if the load exceeds 0.5A. The fuse is self-recovering once the
excessive load is removed.
The total load on the GPIO interface power must stay within the
0.5A limit. When you design a system that uses the GPIO
interface power, be sure to complete a power budget assessment
to ensure that the supply is adequate for the system.
If your system needs more than +12 VDC at 0.5A, you can
connect an external power supply to the +12V and Ground pins.
The external supply powers the external loads, and that power
will be available at all +12V pins on the control port.
AC motor
120-230
VAC
IF5 Fixed Reader User's Manual