GPIO Terminal Block IF5, IF30, IF61, IV7 User’s Guide
Intermec Technologies Corporation Worldwide Headquarters 6001 36th Ave.W. Everett, WA 98203 U.S.A. www.intermec.com The information contained herein is provided solely for the purpose of allowing customers to operate and service Intermec-manufactured equipment and is not to be released, reproduced, or used for any other purpose without written permission of Intermec Technologies Corporation.
Document Change Record This page records changes to this document. The document was originally released as Revision 001. Version Number Date Description of Change 002 7/2010 Revised to include new information for connecting to the IV7 reader.
iv GPIO Terminal Block User’s Guide
Contents Contents About the GPIO Terminal Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 What You Need . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 About the Terminal Block Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 About the Input, Output, and Power Terminal Connections . . . . . . . . . . . . . . . . . .
Contents 6 GPIO Terminal Block User’s Guide
About the GPIO Terminal Block Use the GPIO terminal block (P/N 203-726-002) to connect industrial controls such as motion sensors or lights to Intermec RFID readers. GPIO Terminal Block What You Need You connect the terminal block to the reader with a GPIO cable: • For IF5, IF30, and IF61, use Intermec P/N 236-057-001. • For IV7, use Intermec P/N 236-089-001. This cable also connects the IV7 to a host PC. You supply your own cables or wiring for your industrial controls.
Some Intermec readers can also provide power for your external controls. For more information, see “Connecting Devices to the Power Terminal” on page 21. About the Terminal Block Connections Connect the terminal block to your Intermec reader through the serial port. Cables from industrial controls are run through the strain relief connector shown in the next illustration and connected to the screw terminals on the main circuit board.
Inputs 4 +12 V IN 1 PLUS IN 1 MINUS GND 3 +12 V IN 1 PLUS IN 1 MINUS GND 2 +12 V IN 1 PLUS IN 1 MINUS GND 1 +12 V IN 1 PLUS IN 1 MINUS GND Outputs Jumpers +12 V OUT 1 PLUS OUT 1 MINUS GND Jumpers +12 V OUT 1 PLUS OUT 1 MINUS GND Jumpers +12 V OUT 1 PLUS OUT 1 MINUS GND Jumpers +12 V OUT 1 PLUS OUT 1 MINUS GND +12 V Power GND Terminal Connections: This illustration shows the input, output, and power terminal connections on the main circuit board.
Installing the Terminal Block Note: For IP54 compatibility, mount the terminal block with the connector side facing toward the floor. You need these tools to install the terminal block: • Drill and drill bits appropriate for the mounting surface • Small straight-slot and Phillips screwdrivers • Wire crimping and stripping tool Note: The terminal block includes four #6 x 2-inch wood screws you can use for mounting, or you can supply your own mounting hardware.
5 Route the control wiring through the sleeve, split ring, and bushing, and into the terminal block through the strain relief connector body. Strain relief connector body Bushing Split ring To industrial controls Sleeve 6 Connect the control wiring to the appropriate terminals inside the terminal block. For more information, see the next section, “Connecting To the IF5, IF30, and IF61 Readers.” 7 Install the bushing, split ring, and sleeve on the strain relief connector body (finger tighten only).
IF61 Terminal block GPIO cable To industrial controls Connecting to the Reader: This example shows an IF61 Fixed Reader connected to the terminal block. Connecting To the IF5, IF30, and IF61 Readers This section explains how the terminal block connects to the IF5, IF30, and IF61 reader GPIO interfaces, and how you connect devices to the terminal block input, output, and power terminals. Note: Connecting the terminal block to the IV7 requires special considerations.
The input terminals access the four general purpose inputs on the reader. Each of the inputs is compatible with input signals of 10 to 48 VDC. Each input terminal includes a green indicator LED that lights up when the input circuit is energized. 12 VDC - + Reader Interface +12 V Reader CPU +Input -Input Ground Input Terminal Schematic: This illustration shows a reader input terminal. The –Input post is shorted to the Ground post by a jumper.
Reader Powered Input Supplying the input interface with power from the reader is the easiest way to connect a control to an input terminal. Each input terminal ships with a jumper wire between the -Input and Ground posts. If the input device is a switch closure, connect the other side of the switch to the +12 V post as shown in the next illustration.
Isolated Input Interface Use this method to minimize noise caused by distance or grounding characteristics. The isolated input avoids induced noise by referencing a remote input to chassis return of the reader. Use a twisted pair cable to connect the input device to the terminal block to further suppress noise. Remove the jumper between the -Input and Ground posts so there is no connection to either the 12 VDC power from the reader or the reference chassis ground.
Open Collector Input Interface You can connect the input to an open collector interface of an external device, which suggests that the grounds are tied together for the two systems. Because the common ground can be a source of input noise, follow good grounding practices for both the reader and the input device. The illustration shows the reader providing power to the pull-up resistor for the open collector.
Connecting Devices to the Output Terminals Each output terminal has four terminal posts: • 12 V • +Output • -Output • Gnd (Ground) The output terminals allow you to access the four general purpose outputs on the reader. Each output is optically isolated from the reader, polarized, and rated for 5 to 48 VDC at 0.25 A. All reader outputs include internal thermal fuses that trip if the load exceeds 0.25 A, and the fuses are self-recovering once the excessive load is removed.
Because the outputs are optically isolated, you can configure each one to switch the high side or the low side of the load. You can power the load directly from the reader or from an external power supply. The next examples illustrate several ways to connect controls to the output terminals: • Switching the high side, with the load powered by the reader. • Switching the low side, with the load powered by the reader. • Switching the high side, with the load powered externally.
Switching the Low Side Using Reader Power For low side switching applications, lamp power is routed to all the lamps in common and the low side of the load is routed to the switch. To configure an output terminal for low side switching, use the jumper to short the -Output and Ground posts together as shown in the next illustration. External indicator lamp (max. 2) 0.
Switching the High Side Using External Power To switch the high side of an externally powered load, remove the output terminal jumper. You should also connect the reader ground to the ground system of the external power supply, which enables the output terminal LED (not shown in the illustration). When the output is turned on, the LED lights up. Connect the external power source as shown in the next illustration. 250 mA max.
Driving a DC Relay To Control an AC Load The reader outputs can only switch DC loads, but can drive relays that control AC loads as seen in the next illustration. AC motor -Output, 250 mA max. 120-230 VAC 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.
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 posts on the power terminal. The external supply will power the external loads, and that power will be available at all +12 V posts on the input and output terminals. Sample System Diagram This illustration shows how to connect a system that uses position detection sensors as inputs and indicator lamps as outputs.
Connecting To the IV7 Vehicle-Mount Reader Connecting GPIO devices to the IV7 reader requires special considerations. The IV7 GPIO: • inputs are limited to 40 mA total. • outputs are limited to 50 mA total. • does not provide 12 VDC for powering external devices.
Where to Go From Here For information on configuring and operating the reader, see the reader user’s manual. You may need additional information when working with the reader in your data collection system. To download PDF files of our current manuals, visit www.intermec.com and choose Support > Manuals. Specifications and Pinouts Dimensions: 17.4 cm x 12.4 cm x 7.4 cm (6.88 in x 4.88 in x 2.94 in) Weight: 510 gm (1.12 lbs) Input terminal ratings: 10 to 48 VDC Output terminal ratings: 5 to 48 VDC @0.
Port Pin Assignments for Terminal Block, IF5, IF30, and IF61 Pin Description Active Polarity 1 –Input 1 Low-RTN 2 –Input 2 Low-RTN 3 –Input 3 Low-RTN 4 –Input 4 Low-RTN 5 Ground 6 Ground 7 +Output 1 8 Ground 9 +Output 2 High, 10 to 48 V High, 10 to 48 V 10 Ground 11 +Output 3 12 Ground 13 +Output 4 High, 10 to 48 V 14 +Input 1 High, 10 to 48 V (10 to 36 V for IF61 only) 15 +Input 2 High, 10 to 48 V (10 to 36 V for IF61 only) 16 +Input 3 High, 10 to 48 V (10 to 36 V
Pinouts for IV7 Data Port 3 2 1 5 4 6 7 8 9 10 13 12 14 15 16 17 18 19 20 11 Data Port Pin Assignments for IV7 26 Pin Description Pin Description 1 TXD from IV7 11 GPIO Return 1 2 RXD to IV7 12 GPIO Return 2 3 Ground 13 GPIO Return 3 4 CTS from IV7 14 GPIO Return 4 5 RTS to IV7 15 GPIO Return 5 6 +5VDC 16 NC 7 GP Input 0 17 GP Output 0 8 GP Input 1 18 GP Output 1 9 GP Input 2 19 GP Output 2 10 GP Input 3 20 GP Output 3 GPIO Terminal Block User’s Gu
GPIO Terminal Block User’s Guide 27
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