Exception Handling - ABB 800xA Operation

For safeguard

Hide thumbs Also See for 800xA:

Table of Contents

Exception Handling

Inhibit of Inputs

The gas detector inputs and the fire inputs have the possibility for setting inhibit

(Set/Reset Inhibit) on individual signals from the operator dialog. The function is

used to disable actions from the signals while the alarm and event reporting is

retained. Inhibit is most commonly used in fire and gas systems but is also utilized

in ESD systems for special applications.

In Cause & Effect matrices implemented with Safety Builder it is also possible to

specify an inhibit function for DIS

for emulating the inhibit function. Control and indication of the Tested property is

included in the Faceplate by configuring attributes in the Function Selector aspect,

see figure

corresponding to Boolean and click Apply to save the changes.

A special dialog with inhibit function for these signals is available for use with

display elements (dcDiInhibitDialog and dcAiInhibitDialog). When these objects

are selected by name the standard dialog is used.

1. DIS can not be used for safety critical signals.

Figure

5. To use Tested for the inhibit function, select the checkbox

/DIC and AIS/AIC. The property Tested is used

Section 2 Operation

3BNP004849-600

Table of Contents