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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.
5.2.3.7.3 Log
The event can be logged as alarm or event. They can be selected from the available options.
They are as below.
5.2.3.7.3.1 Log Alarm
Log the event as Alarm.
5.2.3.7.3.2 Log Alarm (Auto Ack)
Log the event as alarms and acknowledge automatically
5.2.3.7.3.3 Log Event
Log as event
5.2.3.7.4 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
Note: Number of controller channels shown on the controller screen depends on number of PID process
control cards inserted in the paperless recorder.
5.2.4 Configuration of Process Control Card
5.2.4.1 Heat Only ON-OFF Control
Select REVR for OUT1, Set PB1 to 0, SP1 is used to adjust set point value, O1HY is used to
adjust dead band for ON-OFF control, and TIME is used to adjust the dwell timer (enabled by selecting
TIMR for A1FN or A2FN). The output 1 hysteresis (O1HY) is enabled in case of PB1 = 0. The heat only on-
off control function is shown in the following diagram.
The ON-OFF control may introduce excessive process oscillation even if Hysteresis is minimized
to the smallest. If ON-OFF control is set (i.e. PB1 = 0), TI1, TD1, CYC1, OFST, CPB and PL1 will be hidden
and have no function to the system. The manual mode, auto-tuning, self-tuning and Bumpless transfer will
be disabled too.
Select REVR for OUT1, set TI1 to 0, SP1 is used to adjust set point value; TIME is used to
adjust the dwell timer (enabled by selecting TIMR for A1FN or A2FN). OFST been enabled in case of TI1 =
Jobs
for full details about various jobs available
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