Rockwell Automation 1404-M4_M5_M6_M8 Powermonitor 3000 User Manual, PRIOR to Firmware rev. 3.0 - Manual (Page 52)

Publication 1404-UM001D-EN-E - October 2004
3-26 Powermonitor 3000 Operations
Demand Period Length sets the length in minutes (1 to 99) of the
demand period used for demand and projected demand calculation.
Range –99 to +99, default 15.
• A positive value (other than 0) configures the Powermonitor
3000 to use its internal clock to measure the demand period.
• A setting of zero (0) configures the Powermonitor 3000 to use
the utility pulse connected to status input #2 to synchronize the
demand interval
• A negative value configures the Powermonitor 3000 to use its
internal clock for calculating projected demand and the utility
pulse to calculate actual demand
Number of Demand Periods specifies how many demand intervals are
averaged together to a floating window demand calculation. For
instance, to configure a 30 minute floating window, specify “2” as the
demand period length and “15” as the number of demand periods.
Range 1 to 15, default 1.
Forced Demand Delay is a timeout setting that waits for “x” number of
seconds before ending a demand period when the external demand
sync input function is being used. When a missed external demand
sync is detected,
• The unit forces an end to the current demand period.
• Records an event log record of the event.
• Records a trend log record if the trend log interval is set to -1.
(Sync with demand setting)
• Sends out a demand sync broadcast when configured as a
“Master” and the unit is a series “B” with an Ethernet
communication card option.
• Starts the projected demand calculations from the beginning
again.
Entering a value of “0” will disable this function. For more
information about this feature read the section Network Demand /
Time Configuration, page 3-29.
Projected Demand Type specifies the type of calculation used for
projected demand. Selections are:
• Instantaneous (default)
• First-order
• Second order.