3
Description
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.
Programming
EN
Wiring diagrams
L
AUX. S UPPLY
N
I N P U T
L
O U T P U T
Lp
Ln
L
N
L
AUX. S UPPLY
N
I N P U T
L
O U T P U T
Lp
Ln
L
N
U
1
: Carico Prioritario
U
2
:
Carico non Prioritario
U : Carico
S : Segnalatore acustico / luminoso esterno
FIG.1
FIG. 2
U
2*
S
U
1
:
Priority Load
U
2
: Non-priority Load
U
1
: Charge Prioritaire
U
2
: Charge non-Prioritaire
U
1
: Carga Prioritaria
U
2
: Carga non-prioritaria
U : Load
S : External sound / light signaller
U : Charge
S : Signalisation acoustique / lumineuse extérieure
U : Carga
S : Señal acústica / luz exterior
U
1
U
L
AUX. S UPPLY
N
I N P U T
L
O U T P U T
Lp
Ln
L
N
L
AUX. S UPPLY
N
I N P U T
L
O U T P U T
Lp
Ln
L
N
U
1
: Carico Prioritario
U
2
:
Carico non Prioritario
U : Carico
S : Segnalatore acustico / luminoso esterno
FIG.1
FIG. 2
U
2*
S
U
1
:
Priority Load
U
2
: Non-priority Load
U
1
: Charge Prioritaire
U
2
: Charge non-Prioritaire
U
1
: Carga Prioritaria
U
2
: Carga non-prioritaria
U : Load
S : External sound / light signaller
U : Charge
S : Signalisation acoustique / lumineuse extérieure
U : Carga
S : Señal acústica / luz exterior
U
1
U
FUNCTION F1
FUNCTION F2
L
AUX. S UPPLY
N
I N P U T
L
O U T P U T
Lp
Ln
L
N
L
AUX. S UPPLY
N
I N P U T
L
O U T P U T
Lp
Ln
L
N
U
1
: Carico Prioritario
U
2
:
Carico non Prioritario
U : Carico
S : Segnalatore acustico / luminoso esterno
FIG.1
FIG. 2
U
2*
S
U
1
:
Priority Load
U
2
: Non-priority Load
U
1
: Charge Prioritaire
U
2
: Charge non-Prioritaire
U
1
: Carga Prioritaria
U
2
: Carga non-prioritaria
U : Load
S : External sound / light signaller
U : Charge
S : Signalisation acoustique / lumineuse extérieure
U : Carga
S : Señal acústica / luz exterior
U
1
U
L
AUX. S UPPLY
N
I N P U T
L
O U T P U T
Lp
Ln
L
N
L
AUX. S UPPLY
N
I N P U T
L
O U T P U T
Lp
Ln
L
N
U
1
: Carico Prioritario
U
2
:
Carico non Prioritario
U : Carico
S : Segnalatore acustico / luminoso esterno
FIG.1
FIG. 2
U
2*
S
U
1
:
Priority Load
U
2
: Non-priority Load
U
1
: Charge Prioritaire
U
2
: Charge non-Prioritaire
U
1
: Carga Prioritaria
U
2
: Carga non-prioritaria
U : Load
S : External sound / light signaller
U : Charge
S : Signalisation acoustique / lumineuse extérieure
U : Carga
S : Señal acústica / luz exterior
U
1
U
Two functions can be set:
F1 (pre-set function):
ACOUSTIC SIGNAL AND AUTOMATIC NON-PRIORITY LOADS
TRIPPING. (Fig.1)
By exceeding the loaded power threshold:
• 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.
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.
To access to programming menu keep pressed the front key for 3 seconds.
The programmable parameters are displayed in automatic sequence according to the selected function
t > 0,5 sec.
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
t > 3 sec.
KW
V
A
P
t > 0,5 sec.
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
t > 3 sec.
KW
V
A
P
t > 0,5 sec.
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
P
KW
V
A
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KW
V
A
P
KW
V
A
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KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
t > 3 sec.
KW
V
A
P
t > 0,5 sec.
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
t > 3 sec.
KW
V
A
P
t > 0,5 sec.
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
t > 3 sec.
KW
V
A
P
t > 0,5 sec.
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
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KW
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KW
V
A
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KW
V
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KW
V
A
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KW
V
A
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KW
V
A
P
KW
V
A
P
KW
V
A
P
t > 3 sec.
KW
V
A
P
t > 0,5 sec.
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
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KW
V
A
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KW
V
A
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KW
V
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KW
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KW
V
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KW
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KW
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A
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KW
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KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
P
KW
V
A
P
t > 3 sec.
KW
V
A
P
t > 0,5 sec.
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
t > 3 sec.
KW
V
A
P
t > 0,5 sec.
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
P
KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
t > 3 sec.
KW
V
A
P
t > 0,5 sec.
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
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KW
V
A
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KW
V
A
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KW
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A
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KW
V
A
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KW
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A
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KW
V
A
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KW
V
A
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KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
t > 3 sec.
KW
V
A
P
t > 0,5 sec.
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
P
KW
V
A
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KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
t > 3 sec.
KW
V
A
P
t > 0,5 sec.
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
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KW
V
A
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KW
V
A
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KW
V
A
P
KW
V
A
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KW
V
A
P
KW
V
A
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KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
t > 3 sec.
KW
V
A
P
t > 0,5 sec.
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
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KW
V
A
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KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
t > 3 sec.
KW
V
A
P
t > 0,5 sec.
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
t > 3 sec.
KW
V
A
P
t > 0,5 sec.
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
t > 3 sec.
KW
V
A
P
A key pressure just next to a parameter allows displaying the loaded value; another pressure allows modifying the loaded value.
With just a pressure of the key
t > 0,5 sec.
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
t > 3 sec.
KW
V
A
P
you increase/modify by one digit
the value
Fig. 1
Fig. 2
t > 0,5 sec.
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
t > 3 sec.
KW
V
A
P
t > 0,5 sec.
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
KW
V
A
P
t > 3 sec.
KW
V
A
P
(
*Attention:
the total power of the loads connected to Ln must not exceed 4kW)
