LV power air circuit breakers and switch-disconnectors ... - Piti Group

Functions
and characteristics
Communication
Masterpact in a communication
network
Devices
Circuit breakers equipped with Micrologic control units may be connected to either
a Digipact or Modbus communication bus. The information made available
depends on the type of Micrologic control unit (A, P or H) and on the type of
communication bus (Digipact or Modbus).
Switch-disconnectors may be connected exclusively to the Digipact communication
bus.
Communication bus
Digipact bus
The Digipact bus is the internal bus of the low-voltage switchboard in which the
Digipact communicating devices are installed (Masterpact with Digipact COM,
PM150, SC150, UA150, etc.). This bus must be equipped with a DC150 data
concentrator (see the Powerlogic System catalogue).
Addresses
Addressing is carried out by the DC150 data concentrator.
Number of devices
The maximum number of devices that may be connected to the Digipact bus is
calculated in terms of “communication points”. These points correspond to the
amount of traffic the bus can handle. The total number of points for the various
devices connected to a single bus must not exceed 100.
If the required devices represent more than 100 points, add a second Digipact
internal bus.
Communicating device Number of points
DC150 data concentrator 4
Micrologic + Digipact COM 4
PM150 4
SC150 4
UA150 4
Length of bus
The maximum recommended length for the Digipact internal bus is 200 meters.
Bus power source
Power is supplied by the DC150 data concentrator (24 V)..
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