B882–032 24 Vdc Diagnostic Output, Overview
(Original Document)
The B882–032 diagnostic output module provides 32 points that make up four groups of eight outputs. Each group of eight outputs shares an external power supply voltage. The outputs work over the range of 20.0—28.0 Vdc, true high. It is capable of driving 24 Vdc relays, solenoids, pilot lamps, and other loads rated up to 1.0 A.
The B882–032 module also detects field fault conditions and turns the faulted point off for vital applications. The B882–032 diagnostic dc output module can detect open-load, over-current, over-voltage, and over-temperature conditions.
The following illustration is the B882–032 simplified block diagram
The functionality of the diagnostic dc output module can be selected according to the following criteria. It can be a bi-directional module (B882) with 32 discrete outputs and 32 discrete inputs which represent fault flags for each respective output. It can also be a uni-directional module (B818) having 32 discrete outputs without fault flags.