ITRON SL7000 - Excess Demand Modes

SL7000 User Guide
1
Restart mode
2
Resume mode
3
Synchronise mode
4
Power failure
 starts from - 13h37
 continues to - 13h42
6.9.4.6. Excess demand modes
The meter detects an excess demand when the calculated demand value rises above predefined thresholds for
the current rates. Depending on specific requirements, up to ten excess demand thresholds can be defined.
The meter records the following values for each excess demand:
 number of excess demand integration periods
 total excess demand duration
 cumulated excess demand
Excess demand is indicated by the following methods:
 an icon is lit on the meter LCD
 a logbook entry and alarm
 a switch is activated on a preconfigured control output
Excess demand control can be programmed according to one of the following modes:
 Rising demand
Every second, the meter calculates and compares the rising demand value with the demand threshold. If the
demand threshold value is exceeded, the meter immediately indicates an excess. At the end of the current
integration period all excess demand indicators are reset.
 End of integration
If the threshold value is exceeded during the integration period, the meter indicates an excess at the end of
the integration period and during subsequent integration periods. At the end of each integration period the
excess demand indicators are reset only if the rising value has remained lower than the excess threshold.
 Projection
Every second, the meter calculates and extrapolates the demand to the end of the current integration period.
If the demand threshold value is exceeded by the extrapolated value, the meter immediately indicates an
excess. This calculation is always inhibited during the first 30% of the integration period.