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LEGRAND 4 120 20 Manual De Instrucciones página 3

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Description
EN
Item 4 120 20 is an energy management relay which allows to monitoring the absorbed power and to activate, in the event of an overload, an internal sound signalling
(buzzer) and, if properly programmed, may also directly proceed to the tripping of non-priority loads.
Two functions can be set:
F1 (pre-set function): ACOUSTIC SIGNAL AND AUTOMATIC NON-PRIORITY LOADS
KW
V
A
TRIPPING. (Fig.1)
By exceeding the loaded power threshold:
P
• the state of the alarm is displayed;
• the inner alarm buzzer is activated (duration of the sound signalling "t.be"
programmable).
When the activation time ("t.on", programmable) is over:
• the load connected with Ln terminal (n = non-priority) is tripped.
The load self-resetting occurs when the inhibition time ("t.of", programmable) is
over.
It is still possible to make a manual reset of the load, acting on the front button of
the device.
FIG.1
Wiring diagrams
KW
V
A
FIG.1
AUX. S UPPLY
P
FUNCTION F1
t > 3 sec.
L
N
KW
V
A
KW
P
P
KW
V
A
KW
V
U
: Carico Prioritario
1
L
Fig. 1
P
:
KW
V
A
KW
U
V
2
N
P
:
U
1
U
: Non-priority Load
2
U
: Carico Prioritario
1
U
: Charge Prioritaire
1
(*Attention: the total power of the loads connected to Ln must not exceed 4kW)
:
U
U
: Charge non-Prioritaire
2
2
V
A
KW
V
A
U
: Carga Prioritaria
:
U
1
1
KW
V
A
KW
Programming
P
U
: Carga non-prioritaria
2
U
: Non-priority Load
KW
V
A
2
P
P
KW
V
A
KW
V
P
KW
V
A
FIG. 2
U
: Charge Prioritaire
P
1
KW
V
A
KW
V
P
KW
V
A
KW
U
: Charge non-Prioritaire
P
2
P
P
AUX. S UPPLY
U
: Carga Prioritaria
1
A
KW
V
A
U
: Carga non-prioritaria
2
P
L
KW
V
A
KW
V
A
KW
V
A
FIG. 2
N
P
P
V
A
KW
V
A
KW
P
KW
V
A
To access to programming menu keep pressed the front key for 3 seconds.
KW
V
KW
V
A
P
P
A
KW
V
A
U : Carico
The programmable parameters are displayed in automatic sequence according to the selected function
P
P
KW
V
A
KW
V
P
KW
V
A
S : Segnalatore acustico / luminoso esterno
P
P
KW
V
A
KW
U : Load
P
P
S : External sound / light signaller
U : Charge
A
KW
V
A
V
A
KW
V
A
S : Signalisation acoustique / lumineuse extérieure
KW
P
L
P
P
KW
V
A
KW
V
A
KW
V
A
N
U : Carga
P
P
P
S : Señal acústica / luz exterior
KW
V
A
KW
V
KW
V
A
KW
V
KW
U : Carico
P
P
A
KW
V
A
KW
V
A
KW
V
KW
V
A
P
P
t > 3 sec.
S : Segnalatore acustico / luminoso esterno
P
P
P
KW
V
A
KW
A key pressure just next to a parameter allows displaying the loaded value; another pressure allows modifying the loaded value.
V
A
KW
V
A
KW
P
P
U : Load
P
P
S : External sound / light signaller
A
KW
V
A
t > 3 sec.
P
U : Charge
KW
V
A
KW
V
A
S : Signalisation acoustique / lumineuse extérieure
P
P
With just a pressure of the key
KW
V
A
KW
V
KW
V
A
you increase/modify by one digit
U : Carga
V
A
KW
V
A
P
P
A
KW
V
A
A
KW
V
KW
KW
V
V
A
KW
KW
V
KW
the value
KW
V
A
P
t > 0,5 sec.
S : Señal acústica / luz exterior
P
P
P
P
P
P
P
KW
V
A
KW
P
P
A
KW
V
A
P
V
A
KW
V
A
V
A
I N P U T
O U T P U T
L
N
L
L p
L n
AUX. S UPPLY
I N P U T
U
U
O U T P U T
1
2*
L
N
L
L p
L n
V
A
KW
V
A
U
U
1
2*
P
A
KW
V
A
P
Carico non Prioritario
A
KW
V
A
P
Priority Load
KW
V
A
P
Carico non Prioritario
KW
V
A
KW
P
P
KW
V
A
KW
Priority Load
V
A
KW
V
A
P
P
KW
V
A
P
A
KW
V
A
P
KW
V
A
P
A
KW
V
A
P
V
A
KW
V
A
P
P
I N P U T
O U T P U T
KW
V
A
P
L
N
L
L p
L n
KW
V
A
KW
U
P
P
KW
V
A
KW
S
KW
V
A
P
P
V
A
KW
V
A
KW
V
A
KW
P
P
P
P
V
A
A
KW
V
A
KW
V
A
KW
V
A
KW
P
P
A
KW
V
A
P
P
KW
V
A
AUX. S UPPLY
I N P U T
O U T P U T
P
P
V
A
KW
V
A
KW
V
A
L
N
L
L p
L n
t > 3 sec.
P
P
t > 3 sec.
U
KW
V
A
KW
S
KW
V
A
KW
V
A
P
P
P
P
V
KW
A
V
A
KW
V
KW
A
KW
V
A
P
P
P
P
A
KW
V
A
A
V
A
KW
V
KW
A
V
A
P
KW
V
A
KW
A
KW
V
A
P
P
P
P
P
V
A
KW
V
A
KW
V
A
V
A
P
P
KW
V
A
KW
KW
V
A
KW
P
P
P
P
V
KW
A
V
A
KW
V
KW
A
KW
V
A
P
P
P
P
A
t > 3 sec.
KW
V
A
P
KW
V
A
KW
A
A
KW
V
A
A
V
A
V
A
KW
KW
V
V
A
KW
V
A
P
P
P
P
P
P
V
A
KW
V
A
KW
V
A
P
P
t > 3 sec.
KW
V
A
KW
V
A
KW
t > 0,5 sec.
P
P
P
KW
V
A
KW
KW
V
A
F2: ACOUSTIC SIGNAL AND ACTIVATION REMOTE CONTACT. (Fig.2)
By exceeding the loaded power threshold and when the delay ("del", programmable)
is over:
• the state of the alarm is displayed;
• the inner alarm buzzer is activated (duration of the sound signalling "t.be"
programmable);
• the inner relay between L and Ln is activated.
The state of the alarm stays until the power is higher than the loaded threshold.
FUNCTION F2
KW
V
A
P
Fig. 2
KW
V
A
P
V
A
KW
V
A
P
V
A
KW
V
A
KW
V
A
P
KW
V
A
KW
V
P
P
P
KW
V
A
KW
V
P
P
KW
V
A
P
KW
V
A
P
V
A
V
A
KW
V
A
KW
V
A
KW
P
KW
V
A
V
A
KW
V
A
P
P
P
P
KW
V
A
KW
V
A
V
P
P
KW
V
A
KW
V
t > 3 sec.
P
P
KW
V
A
KW
V
A
P
P
V
A
V
A
KW
V
A
P
V
A
KW
V
A
KW
V
A
KW
P
P
P
KW
V
A
KW
V
KW
V
KW
A
V
A
KW
V
P
P
V
A
KW
V
A
KW
V
P
P
P
P
P
KW
V
A
KW
V
A
t > 3 sec.
P
P
t > 3 sec.
V
A
V
A
t > 3 sec.
KW
V
A
P
V
A
KW
V
A
KW
V
A
KW
P
P
P
KW
V
A
P
V
A
KW
V
A
KW
KW
V
A
V
A
KW
V
KW
V
A
P
P
P
P
P
KW
V
A
P
3
V
A
KW
V
A
P
V
A
KW
V
A
KW
V
A
KW
AUX. S UPPLY
I N P U T
O U T P U T
L
N
L
L p
L
U
1
N
L
N
U
: Carico Prioritario
1
:
U
: Carico Prioritario
U
Carico non Prioritario
1
2
:
U
Carico non Prioritario
2
:
U
Priority Load
1
:
U
Priority Load
1
U
: Non-priority Load
2
U
: Non-priority Load
2
U
: Charge Prioritaire
U
: Charge Prioritaire
1
1
U
: Charge non-Prioritaire
2
U
: Charge non-Prioritaire
2
U
: Carga Prioritaria
1
U
: Carga Prioritaria
1
U
: Carga non-prioritaria
2
U
: Carga non-prioritaria
2
FIG. 2
FIG. 2
AUX. S UPPLY
I N P U T
O U T P U T
L
N
L
L p
AUX. S UPPLY
I N P U T
U
L
N
L
L
N
U : Carico
L
S : Segnalatore acustico / luminoso esterno
N
U : Load
KW
V
A
KW
V
S : External sound / light signaller
U : Carico
P
P
S : Segnalatore acustico / luminoso esterno
U : Charge
A
KW
V
S : Signalisation acoustique / lumineuse extérieure
U : Load
P
KW
V
A
U : Carga
S : External sound / light signaller
P
S : Señal acústica / luz exterior
A
U : Charge
A
S : Signalisation acoustique / lumineuse extérieure
KW
V
A
KW
V
U : Carga
P
P
S : Señal acústica / luz exterior
KW
V
A
V
A
KW
V
A
P
KW
V
A
P
P
A
A
KW
V
A
KW
V
P
P
KW
V
A
t > 3 sec.
P
KW
V
A
V
A
KW
V
A
P
P
A
t > 3 sec.
KW
A
V
A
A
P
t > 3 sec.
KW
V
A
P
V
A
KW
V
A
P
KW
A
V
A
t > 3 sec.
P
KW
V
A
P
V
A
U
U
1
2*
L n
U
2*
L n
O U T P U T
S
L p
L n
U
S
A
A
A

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