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D-14
Compact NS630b to 3200
Connection of the 24 V DC
external power supply AD module
Electrical diagrams
DB128383
The 24 V DC external power-supply (AD module) for the Micrologic control unit
b
(F1- F2+) is not required for basic protections LSIG.
The 24 V DC external power-supply (AD module) for the BCM ULP
b
communication module (E1-E2) is required.
The 24 V DC external power-supply (AD module) for the FDM121 front display
b
module (0V +24) is required.
The 24 V DC external power-supply (AD module) for the programmable contact
b
M2C/M6C is required.
The same 24 V DC external power-supply (AD module) can be connected
b
to Micrologic control unit, BCM ULP and FDM121, M2C/M6C.
b
If voltage > 480 V AC or in an environment with a high level of electromagnetic disturbances,
use separate power supply: 1 power supply for Micrologic (F1- F2+) and M2C/M6C, another
power supply for BCM ULP and FDM121.
With Micrologic A/E, it is recommended to connect 24 V DC external power-supply
b
(AD module) to the Micrologic control unit (F1- F2+) in order to keep available
the display and the energy metering, even if Current < 20 % In.
Note:
In case of using the 24 V DC external power supply (AD module), maximum cable length
between 24 V DC (G1, G2) and the control unit (F1-, F2+) must not exceed 10 meters.
The BAT battery module, mounted in series upstream of the AD module, ensures
an uninterrupted supply of power if the AD module power supply fails.
The internal voltage taps are connected to the botton side of the circuit breaker.
With Micrologic P/H, external voltage taps are possible using the PTE option.
With this option, the internal voltage taps are disconnected and the voltage taps are connected
to terminals VN, V1, V2, V3.
The PTE option is required for voltages less than 220 V and greater than 690 V (in which case
a voltage transformer is compulsory). For three-pole devices, the system is supplied with
terminal VN connected only to the control unit (Micrologic P).
When the PTE option is implemented, the voltage measurement input must be protected against
short-circuits. Installed as close as possible to the busbars, this protection function is ensured
by a P25M circuit breaker (1 A rating) with an auxiliary contact (cat. no. 21104 and 21117).
This voltage measurement input is reserved exclusively for the control unit and must not ever be
used to supply other circuits outside the switchboard.
Connection
The maximum length for each conductor supplying power to the trip unit or M6C
module is 10 m.
Do not ground F2+, F1-, or power supply output:
the positive terminal (F2+) on the trip unit must not be connected to earth ground
b
the negative terminal (F1-) on the trip unit must not be connected to earth ground
b
the output terminals (- and +) of the 24 V DC power supply must not be grounded.
b
Reduce electromagnetic interference:
the input and output wires of the 24 V DC power supply must be physically
b
separated as much as possible
if the 24 V DC power supply wires cross power cables, they must cross
b
perpendicularly. If this is not physically possible, the power supply conductors must
be twisted together
Power supply conductors must be cut to length. Do not loop excess conductor.
b