Rolling Demand; Block Interval - GE Multilin F650 Instruction Manual

5.2 PRODUCT SETUP
b) CALCULATION METHOD 2: ROLLING DEMAND.
This method calculates the linear average of the magnitude in the specified interval. The measure integration is made in the
time period specified by the Demand Interval setpoint. The calculation is made every second. Operation of the rest of the
system is performed every minute. The demand value is the average of the values obtained during the time period
specified by the Demand Interval setpoint
c) CALCULATION METHOD 3: BLOCK INTERVAL
The Block Interval operation mode depends on the "Trigger Enabled" setpoint.
CALCULATION METHOD 3a: BLOCK INTERVAL – With trigger setpoint DISABLED.
This method consists on integrating the measure during the time period specified in the DEMAND INTERVAL setpoint.
The calculation will be made every second and the demand value will be the average of all values produced during the
time interval specified in the DEMAND INTERVAL setpoint. The interval demand value will be shown once this time
has expired.
If, for example, the setpoint indicates 15 minutes for integration, the demand value update towards outside of the
module will be 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 setpoint ENABLED.
The demand value is given by integration of the measure during the time between two consecutive pulses in the input
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assigned to DEMAND_TRIGGER in Relay Configuration. Calculation of integration is made every second with each new
measure.
In case the interval between two consecutive pulses exceeds 60 minutes, the relay will calculate the demand after 60
minutes from the last pulse, this measure will be updated in the status and a new demand count will start. This method
calculates a linear average of the magnitude.
Figure 5–1: shows the behavior of the demand, depending on the Selected setpoint for demand calculation.
5-14 F650 Digital Bay Controller
5 SETPOINTS
GE Multilin