©2025 Copeland LP.
026-1803 R13 Supervisor I&O User Guide 9 - 29
9.16.1.2 Electrical Usage
If Electricity is selected as the Usage Type, the electrical input
signal must be specified using the Electr Inp Type parameter.
The selections available are kW analog, kWh pulse, Current,
and Current 3-phase.
kW Analog Input
When Electr Inp Type is set to kW Analog, the Utility
Monitoring application will configure the input for units of
power (kW). The analog output signal from a power
meter device provides a compatible output signal and
can be connected to this input. The Utility Monitoring
application uses this input to calculate energy consumption
(kWh) on a weekly, daily, and monthly basis by integrating
the instantaneous power samples (approximation by
finite steps). The application considers a varying
sampling frequency of the input signal to produce an
energy calculation.
kWh Pulse Input
When Electr Inp Type is set to kWh Pulse, the Utility
Monitoring application will configure the input for units of
energy (kWh). A MultiFlex board analog input, configured
as a pulse accumulator, provides a compatible signal that
can be connected to the Utility Monitoring input. From
this input signal, the Utility Monitoring application
calculates energy consumption on a weekly, daily, and
monthly basis by accumulating the variable energy
pulses provided by the pulse accumulator physical input.
An instantaneous power output is also calculated. This
calculation uses the energy consumed over a one-
minute period to calculate the average power over the
minute period.
Current/Voltage Inputs - Single Three Phase
When the Electr Inp Type parameter is set to Current or
Current 3-phase, the application calculates energy
consumption by calculating instantaneous power and
then integrating the power calculation by finite step
approximation. The application supports a single current
input for single phase monitoring, or three current inputs
for three phase monitoring (wye configuration).
Additional voltage and power factor inputs are provided
so that the power can be calculated. These inputs can be
set to fixed values or can be connected via pointers to
real-time voltage and power factor outputs from a smart
power meter.
9.16.2 Consumption Totalizing
9.16.2.1 Fixed Period Totalizers
The application provides Daily, Weekly, and Monthly totalizer
outputs. The Daily output accumulates throughout the day
and resets to zero at 00:00 (midnight) every day. The Weekly
output accumulates throughout the week and resets to zero
at 00:00 on the day of the week specified by the WEEK START
DAY input. The Monthly output accumulates throughout the
calendar month and resets to zero at 00:00 on the day of the
month specified by the Month Start Day parameter. Before
the fixed period totalizers are reset, their values will be logged
in the Utility Base Log.
9.16.2.2 User Totalizer Output
The application also provides a user-defined totalizer output
(User Win Total) that accumulates for a custom duration. The
user can specify the duration window (User Win Dur) that the
Totalizer Output will accumulate before it logs the value and
resets to zero. This time interval can be configured from 1
minute to 24 hours. The totalized value will be logged in the
Utility Base Log at the specified interval.
9.16.2.3 Utility Logging Group
For proper logging of totalizer outputs, the outputs must be
associated with a logging group that is configured to be in
Utility mode. By default, both the user defined totalizer and
the fixed period totalizer outputs are associated to the Utility
Base Log group. See Section 5, Logging Groups for more
information on management of logging groups.
9.16.3 Demand Shedding
9.16.3.1 Overview
The application can monitor the rate of consumption and
trigger an output to turn ON if the rate exceeds the user-
specified setpoint. To trigger the output based on an
instantaneous rate of consumption, the Demand Type
parameter should be set to Real. To use the average rate of
consumption, Demand Type should be set to Average.
9.16.3.2 Average Rate of Consumption
The application calculates the average rate of consumption
over a window of time. This is considered the demand
window. The window is configurable between 1 and 30
minutes via the Average parameter.
9.16.3.3 Shed Output
The application provides a demand shed digital output that
turns ON (displayed as SHED) when the Present or Average
rate of usage (configurable) exceeds a threshold setpoint
(Demand SP). If the shed output is active and the usage rate
drops below the Demand SP minus the Demand Deadband,
the shed output will be OFF (displayed as RESTORE).
NOTE
NOTE: The Elect Inp Type parameter only applies
if the Usage Type is set to Electricity.
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