Intermec IF2 IF2 Network Reader User Manual - Page 104

Use the Power Interface

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Chapter 6 - Use the IF2 GPIO Interfaces + 12 V + Output AC motor - Output Ground External relay 120-230 VAC 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. Use the Power Interface The IF2 GPIO interface provides 12 VDC at 0.5 A 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 0.5 A. The fuse is self-recovering once the excessive load is removed. The total load on the GPIO interface power must stay within the 0.5 A 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 0.5 A, you can connect an external power supply to the +12 V and Ground pins. The external supply powers the external loads, and that power will be available at all +12 V pins on the GPIO port. 90 IF2 Network Reader User Manual

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Chapter 6 — Use the IF2 GPIO Interfaces
90
IF2 Network Reader User Manual
Driving a DC Relay:
The external relay provides dry contacts for controlling the
AC motor.
Use the Power Interface
The IF2 GPIO interface provides 12 VDC at 0.5 A 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 0.5 A. The fuse is self-recovering once the excessive
load is removed.
The total load on the GPIO interface power must stay within the 0.5 A
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 0.5 A, you can connect an
external power supply to the +12 V and Ground pins. The external
supply powers the external loads, and that power will be available at
all +12 V pins on the GPIO port.
AC motor
120-230
VAC
External
relay
+ Output
+ 12 V
Ground
- Output
Note:
In many installations, the relay and AC wiring must be placed
in an enclosure that meets local fire code regulations.