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All Compact NSX devices can be equipped
with the communication function via a
prewired connection system and a Modbus
network interface.
The interface can be connected directly or
via the FDM121 switchboard display unit.
Four functional levels can be combined to
adapt to all supervision requirements.
A-26
Functions and
characteristics
Compact NSX communication
Communications modules
Four functional levels
The Compact NSX can be integrated in a Modbus communication environment. Four
functional levels can be used separately or combined.
Communication of status indications
This level is compatible with all Compact NSX circuit breakers, whatever the trip unit,
and with all switch-disconnectors. Using the BSCM module, the following information
is accessible:
ON/OFF position (O/F)
b
trip indication (SD)
b
fault-trip indication (SDE).
b
Communication of commands
Also available on all circuit breakers and switch-disconnectors, this level
(communicating remote control) can be used to:
open
b
close
b
reset.
b
Communication of measurements with Micrologic 5 / 6 A or E
This level provides access to all available information:
instantaneous and demand values
b
maximeters/minimeters
b
energy metering
b
demand current and power
b
power quality.
b
Communication of operating assistance with Micrologic 5 / 6 A or E
protection and alarm settings
b
time-stamped histories and event tables
b
maintenance indicators.
b
1
Modbus network
2
Modbus interface
3
NSX cord
4
Internal terminal block for communication via NSX cord
5
BSCM module
6
Prefabricated wiring
7
Micrologic trip unit
8
FDM121 display
9
RJ45 cable
10
Line terminator (on unused connector if applicable)
Communication components and connections
Connections
Compact NSX is connected to the Modbus interface or
b
FDM121 display unit via the internal terminal block for the NSX
cord equipped with an RJ45 connector.
cord available in three lengths: 0.35 m, 1.3 m and 3 m.
v
insulated 0.35 m version for installations > 480 V AC
v
lengths up to 10 m possible using extensions.
v
The FDM121 display unit is connected to the Modbus
b
interface by a communication cable with RJ45 connectors on
both ends.
DB112060
1.
3 m
DB115568
Modbus
2
4
V
DC
10
10
559E1300.indd
version: 1.0