SGM3000 Series Smart Meters
User Manual
54
GEH-7111-1.00-2
Restricted
A closed relay state triggered by pressing the physical boost button on the meter
Note:
If boost primacy is enabled on the meter, then the boost functionality will be
promoted to the highest priority.
•
Priority 5
A change in relay state caused by a load cycling command
•
Priority 6
A change in relay state caused by a load control schedule
If a load control action is currently taking place when another load control action is invoked, the
meter will ignore the new action unless it has a higher priority than the current load control
action.
The SGM3000 Series meters support the changing of the state of the load control relays
manually, either locally using MeterMate or remotely via the AMI interface.
The SGM3000 Series meters with load control relay(s) support the setting of the state of each
relay manually. The relay may be set to the open state or the closed state. The relay state is
also configurable locally using MeterMate and remotely via the AMI interface.
Emergency Override via Control Groups
The SGM3000 Series meters with load control relay(s) will support association of a primary,
secondary, and tertiary group identifier to each load control relay independently. A group
identifier value of zero (0) indicates that emergency override commands are to be ignored, i.e.
the relay is not considered part of a load control group. The default value of the load control
group identifiers is zero (0). Each relay can only be assigned to 1 primary, 1 secondary, and 1
tertiary group.
The SGM3000 Series meters will respond to an AMI system broadcast command targeting
meters with relays that are associated with a primary, secondary, and/or tertiary load control
group. The meters will respond to an AMI system broadcast command targeting meters in
combinations of primary, secondary and/or tertiary groups.
The random delay for opening and closing the load control relay will be defined by the highest
priority group in the event that a broadcast command impacts both a primary, secondary,
and/or tertiary group. The group identifiers can be read or updated at any time, regardless
whether the meter is in an override state or not. If the meter is in an override state and a group
identifier is changed, the meter will remain in the override state until a new override command
is issued. A change to a group identifier will not have any impact on boost, scheduled, or other
load control operations.
The SGM3000 Series meters will generate an event log entry when a group identifier is
changed. The group identifier change event is classified as a normal priority event by default.
The details of the old and new group will be included in the event. The meter will send a
notification message via the AMI signal.
