CHAPTER 5: SETPOINTS
5.2 PRODUCT SETUP
GEK-106310-AF
F650 DIGITAL BAY CONTROLLER
5-25
Illustrated bellow is the curve with a 90% characteristic time of 15 minutes. A setting establishes the time to reach 90% of
a steady-state value, just as the response time of an analog instrument. A steady-state valve applied for twice the
response time indicates 99% of the value.
Calculation Method 2: Rolling Demand.
This method calculates the linear average of the quantity over the set demand time interval. The calculation is made every
second. The value is updated every minute and indicates the demand over the time interval just preceding the time of
update.
Calculation Method 3: Block Interval
The Block Interval operation mode depends on the “Trigger Enabled” setting.
Calculation Method 3a: Block Interval – With trigger setting DISABLED.
This method consists on integrating the measurements during the time period specified in the DEMAND INTERVAL
setting. The calculation is made every second and the demand value is the average of all values produced during the
time interval. The time interval is chosen in the DEMAND INTERVAL setting. The interval demand value is shown once
this time has expired.
If, for example, the setting indicates 15 minutes for integration, the demand value update is made every 15 minutes
(although the calculation is made every second). This method calculates a linear average of the magnitude.
Calculation Method 3b: Block Interval – With trigger setting ENABLED.
The demand value is given by integration of the measurement during the time between two consecutive pulses in the
input assigned. The input is assigned to DEMAND TRIGGER in Relay Configuration. The integration is made every
second with each new measure.
In case the interval between two consecutive pulses exceeds 60 minutes, the relay calculates the demand after 60
minutes from the last pulse, this measure is updated in the status and a new demand count starts. This method
calculates a linear average of the magnitude.
Summary of Contents for F650
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