The Input Expander! User’s Guide by Alcorn McBride Inc.
Document Revision 1.0 June 2001 Copyright (c) 2001 Alcorn McBride, Inc. All rights reserved. Every effort has been made to assure the accuracy of the information contained in this manual, and the reliability of the hardware and software. Errors sometimes can go undetected, however. If you find one, please bring it to our attention so that we can correct it for others. Alcorn McBride Inc. reserves the right to make changes to these products, without notice, in order to improve their design or performance.
Contents Welcome 1 BEFORE YOU START ........................................................................................................1 Technical Support.................................................................................................................1 Installing the Input Expander 3 DIN Rail Mounting...............................................................................................................3 Wall Mounting .........................................................
Welcome Welcome Congratulations on choosing The Input Expander for your discrete control wiring board. The Input Expander makes it easier than ever to directly select the inputs on the back of many of Alcorn McBride’s playback units. Saving you hours of wiring time, this little board eliminates needs messy wiring and provides and easy interface to connect your discrete controls.
Installing the Input Expander There are two ways to install the Input Expander. On a DIN Rail, thus the exciting orange casing or on a wall. DIN Rail Mounting Installation The Input expander has two DIN Rail clips for mounting to a standard DIN Rail. Shown is a side view of the assembled card. Just set one clip edge on the top of the DIN Rail and rotate in the board until you hear the other piece click into place.
Wiring the Module Attention! Never wire any module while power is applied. The module wiring terminals accept one wire per terminal of 17 AWG or smaller stranded wire. Maximum screw torque is 0.4 Nm. Example: File Select 1 Simply connect one wire from your contact closure to the screw labeled “1” at the left of the board, as shown below. Then wire the other side of the contact closure to one of the screws labeled “VDC” on the bottom.
outputs. This is really handy for testing out multiple units, and since the card can be used with so many Alcorn McBride Inc products, it’s a cheap investment for speedy debugging! Powering the Module The Input Expander can be powered from the unit’s power supply or from an external power supply up to 24VDC, depending on how much distance you want to have between the contact closures and the unit. The location of the Input Expander in between the switches and your unit doesn’t matter.
positive DC wire to FIELDVCD as shown. The two jumper clips should be placed on pins 2 & 3 of JP3 and JP4 to be in field power mode. Connecting To Your Unit Attention! Never connect or remove any cabling while power is applied. On more time for good measure let us mention this: Your playback unit must be set VOLTAGE MODE before connecting the Input Expander to it. Your unit will not understand what you are trying to do and may display aberrant behavior, if it is in contact closure mode.
Product Specific Functions There are two screw terminals on the Input Expander that connect to inputs on the various playback units we support with this product. All the other connections like pause, stop, 1,2,3,4 etc… are universal between our products, but PRODUCT SPCFIC 1 and PRODUCT SPCFIC 2 connect to inputs that have meanings that change among units.
