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Action type
Action #1
Data logging
Reset extreme
Action #2
demands
The setpoint will be triggered on the first day of each month between 00:00:00 and
00:15:00 by an external pulse that should come via discrete input #1. Because
actions are performed in turn in the specified sequence, recording maximum
demands will go before the reset of demand keeping registers will be made.
Repeated Setpoint Operations with Interval Timer
Example 4-5 illustrates how to use an interval timer to perform periodical actions in
predefined intervals, for example, for continuous data recording in order to provide
analysis of voltage trend. Assume that the timer #4 is preset for a 20-second
counting interval, and data log partition #12 is configured to record real-time
voltages on phases L1, L2 and L3. The following setpoint will then provide all
needed operations.
If a data logging partition is configured to be of a non-wrap type, recording will stop
when the partition is filled up. Otherwise, logging will continue with overwriting the
oldest data while the setpoint is still operating. The setpoint itself will run
continuously until the user explicitly disables it.
Example 4-5 Sample Of Continuous Data Recording
Conjunction
Condition #1
OR
Setpoint actions
Action type
Action #1
Data logging
The following example shows how to provide the same actions with a predefined
number of operations by simply connecting a counter to the setpoint.
The setpoint is operated 100 times (notice that the first time this occurs when the
counter contents is zero), and will stop automatically when counter attains this limit.
The user should reset counter #1 before running the setpoint, and configure the
counter to count with a scale factor of 1.
94
Action target
#3
None
Trigger conditions
Trigger parameter
Timer #4
Action target
#12
Unit
Operate Release
1 s
0
0
Condi-
Operate
Release
tion
limit
limit
Delays
Operate Release
0.1 s
0
0
Operation Techniques
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