ABB PCD235A101 exciter control board xciter control module

Description

PCD235A101 The layout oriented user defined displays for a safety system are normally organized in a

hierarchy by the dynamic function keys and display select buttons built in the free graphic

display. For fire & gas, the hierarchy could normally be organized as follows:

1. Level 1: Plant overview
2. Level 2: Section floorplan
3. Level 3: Fire room/area detail.

Examples of these displays for an offshore oil production PCD235A101 platform are given in the following

displays

The dynamic presentations are “hidden” when the Fire and Gas system are in a normal state (no

alarms, inhibits, errors or releases anywhere on the platform) and visual when an abnormal

situation, such as a detector alarm, occurs.

All information in the overview display are collected from the various module displays.

The status from each module is represented with dynamic group indication for gas detection,

fire detection, protection systems and a common error for the detection/protection systems.

The grouping is performed in application logic and can be defined by the user.

All information in the section displays are collected from the various fire area detail display

(shown next). The status from each fire room/area is PCD235A101 represented with dynamic group indication

for gas detection, fire detection, protection systems. The grouping is performed in application

logic and can be defined by the user

The fire room/area detail display contains information on all detectors and protection systems

present in the fire area. The displays are normally divided in two parts. One part is layout

oriented and includes dynamic symbols for all fire and gas detectors. The other part contains a

listing of the detectors together with the protection systems

For shutdown systems, the displays are often a part of the process display hierarchy, with

protection interlocks and shutdown actions indicated along with process equipment. Supporting

displays (for example behind the help button) would detail the status of shutdown equipment

and permit operator actions. Refer to Figure 1-3.

The predefined reports/status lists are created PCD235A101 with the AdvaCommand status list function.

An important aspect of system functionality is to avoid degradation of the system and protection

mechanisms due to manual interactions.

The status list function aids in this process, and is used to search the control system for specific

conditions. Any value or status in the real time object database may be searched. Wild card

names, process section, object class etc. are used to select a range of objects to search, such as a

module, building or fire area. This function is used to produce a variety of predefined reports

such as (but not limited to):

Input Override List: A list of all inputs that have the inhibited condition (override) set.

Output Override/Bypass List: For all outputs, list special status of this type

Fault list: A list of all detectors that have a fault condition detected

Special status: Lists all systems in manual or blocked mode

• Blocked alarms
• Gas detection LEL readings.

The lists can be produced on demand, or are timed, e.g. per shift or per day. The output can be

sent to a display or to a printer. For indication, the periodic timed lists can set or reset indication

flags, that are used as alarms or for summary displays.

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