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5.1.6.7.1.7 Error
It is error event. This event will be activated when there is an error on the input of the channel.
5.1.6.7.2 Set point
Set point for the event.
5.1.6.7.2.1 Hysteresis
To avoid the alarm or event been activated too often, Hysteresis value can be defined for the
event trigger set point.
5.1.6.7.2.2 Holding time
To avoid the alarm or event been activated too often, the holding time can be defined for the
event trigger set point. In process sometimes SP is reached but it will go down immediately, this might due
to process instability. To avoid these kind of nuisance situations, the holding time can be used to see that
PV stays at above that SP more than the holding time and then only activate the action for that event. The
range of holding time can be set from 1 min to 60 min.
5.1.6.7.3 Log
The event can be logged as alarm or event. They can be selected from the available options.
They are as below.
5.1.6.7.3.1 Log Alarm
Log the event as Alarm.
5.1.6.7.3.2 Log Alarm (Auto Ack)
Log the event as alarms and acknowledge automatically
5.1.6.7.3.3 Log Event
Log as event
5.1.6.7.4 Job1 & Job2
The job is called as a task to be performed when the event is activated. There are two jobs Job1
and Job2 can be added to perform in any event.
A typical example is to trigger an alarm buzzer in the event of a high temperature. Each
channel can accept five different types of events (or alarms) and each event can create two jobs. Please
note that a job under Event is different from a job perform by Operate key. The job is actuated by an event,
and the Operate is actuated by manual control, no event necessary.
Note: Please refer to the section
communication
for more details about External Channel.
5.2 Controller
This will allow the user to configure the PID process control card. The maximum no of PID
Process control cards will vary depends on the recorder model as described below
PR Recorder
No of PID Process
control card
Jobs
for full details about various jobs available and section
PR10
4
Page 112 of 479
PR20
PR30
4
8
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