Progressive International Electronics EZ Wire DBox - Manual (Page 7)

PI DBox Installation Guide
Version 5.0 January 2012
Page 3
PI DBox — Model Specific Installation
Current Loop Style — CL-DBox
Note all warnings in System Installation Warnings section.
Current Loop Style PI DBoxes are used with Gilbarco and Wayne dispensers. Note dispenser-specific
instructions for use with each dispenser. For overview, see Diagram: PI DBox — Current Loop Style
on following page.
Follow instructions in the installation section of the accompanying product manual before connecting
PI DBox as follows:
1. Connect PI DBox to dispenser. Dispensers using current loop communication have two wires,
a negative and a positive, for connectivity. Locate the pair from each dispenser to be
connected and bring the pair into the PI DBox. The wires must be connected + to + and - to
- on unused wiring position(s) in the DBox. Ensure that positive and negative wires are not
crisscrossed at the PI DBox, as this will prevent communication with the controlling device.
Note: A recent DBox board redesign has eliminated the need to set Isolate Jumpers. For Current
Loop Style DBoxes with an Assembly Number of 900-11-6413, proceed to Step 3 in this section. If
installing a PI DBox with an Assembly Number of 900-11-6313, follow instructions in Step 2.
2. Note that isolation jumpers are present above wiring positions in the PI DBox. These jumpers,
marked JP1-JP8, should be left in isolate position until the controlling devices are connected
to the DBox. After connecting all dispensers to be used, move jumpers to normal for each
position connected.
Note: Steps 3-5 in the Current-Loop Style installation procedure are dependent upon the type of
application — PIE application or stand-alone application. Give careful attention to which steps are
needed for your particular application. Also, refer to the appropriate drawings for jumper settings,
interface connections and dispenser wiring.