Aclara SGM1400 Series, Руководство пользователя

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S G M 1 4 0 0 S e r i e s S m a r t M e t e r U s e r M a n u a l – S M E T S 2
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Chapter 6 • Advanced Features
CHAPTER
6
A
DVANCED
F
EATURES
This chapter provides information on the advanced features of the SGM1400-B,
such as supply connection and disconnection, auxiliary load relay, clock, and
event and error logging.
Supply Disconnect and Reconnect
All SGM1400-B Series meters have supply disconnection and reconnection
(SDR) functionality. This provides the means to disconnect the load-side
terminals from the line-side terminals by actuating a contactor that is controlled by
the meter. The contactor may be controlled directly by commands or through
applications such as supply limiting and prepayment. The meter will generate an
event log entry when the supply is manually disconnected.
The configuration parameters for the supply disconnect/reconnect meter relay are
stored in non-volatile memory. All configuration options for the supply
disconnect/reconnect relay can be configured locally via the optical port or
remotely via the AMI interface. This section contains the firmware functional
specifications related to the supply disconnect reconnect functionality. The
contactor and relay options are shown in the Models table on page 7.
Supply Contactor Visual Status
The LCD segment will remain on when the supply disconnect/reconnect contactor
is in the connected state, and it will remain off when the supply
disconnect/reconnect contactor is in the disconnected state.
The LCD segment will flash with a 50% duty cycle during periods when the meter
is armed. When the LCD segment is blinking, the contactor is physically in the
open state until the reconnection is activated.
Scheduled Disconnection/Reconnection
The SGM1400-B Series meters support disconnection and reconnection of all
contactors and relays on a schedule. A common approach to schedule
management applies to the supply disconnect/reconnect functionality and to the
auxiliary load control functionality.
The SGM1400-B Series meters support a definition of a series of relay state
change instructions for changing the state of any of the meter relays on a schedule.
Automatic Disconnection/Reconnection
The SGM1400-B Series meters support multiple methods by which the supply
relay can be automatically disconnected and subsequently reconnected.