ABB 3BSE050199R1 redundancy control for general editor of PM866K02 controller

Description

PM866K02 Alarm management is a standard AdvaCommand Event & Alarm function

Alarm and Event messages are stored and presented in chronological lists. The list of events is

circular and when the list is full, the next event will overwrite the oldest. An alarm is a special

type of event, requiring your attention and acknowledgment. While events are generated

whenever predefined conditions are met, for example, PM866K02 binary variables change state or analog

values exceed limits, alarms are generated when abnormal events occur. By default, an alarm is

not removed from the list until you have acknowledged the alarm and the error has disappeared.

However, it is possible to configure the function in such a way that the message disappears after

acknowledgment, even if the alarm condition still exists.

Alarms are also indicated on all displays as a latest unacknowledged alarm line, and as red

status indications in displays with dynamic data from the objects concerned, flashing until the

alarm is acknowledged, and then steady PM866K02 as long as the alarm condition persists.

You can also configure objects for repetition control of alarms, which means that repetitive

reporting of the same alarm is suppressed if the object toggles between the normal and faulty

states. On your request, the alarm and event messages can be presented in different types of

lists. The lists can be presented as base displays or as overlap displays. When presented as base

displays the lists can be directed to another screen by using the dedicated screen function. The

following types of lists are available:

• Process event lists
• Process alarm lists
• System alarm lists

The system alarm lists contains messages of control system errors, indicating faults or other

changes of state in the control system. PM866K02 All three types of lists can be printed on request, when

the events and alarms occur. The length of the lists, for example, the number of alarms in the

process alarm list can be configured.

NOTE

All Advant Operator Workplaces within one control network should have the

same length of the lists since the automatic acknowledge facility starts when the

alarm list is full.

The contents and the layout of the three types of lists and the alarm line showing the latest

unacknowledged process alarm can all be configured from the System Configuration Dialog.

Filter parameters can be set up in order to filter out not relevant alarms. Several alarm lists with

different filter parameters can be specified.

Dual handling

Events and alarms are generated individually by each Safety controller, and sent onto the

MasterBus 300 data highway. To avoid duplicate entries from the dual system in lists and on

printers, the alarms are received in a temporary buffer in the Operator Station. The first alarm is

immediately presented, but is also retained in the buffer. If a corresponding alarm is received

from the other controller within 12 seconds, it is discarded.

The alarms are passed on into the operator station alarm and event list and sorted according to

their time stamp which is set by the safety controller. The system time in the two safety

controllers will be synchronized within 10 milliseconds of each other.

2.2.7 Safety management

The focus on environmental issues and safety aspects is increasing in modern industrial plant

operation. Lifecycle safety management is the scope of coming standards that will affect all

parties involved in industrial activities.

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