Operating instructions
1.
Specification
1.1 Intended use
The conductive control level relay L-ED with the conductive probes
is used to control the level or to keep between 2 points the level of
conductive liquids like water, oil, chemical products, etc., in tanks
or recipients.
1.2
Function
The conductive level indicator L-ED bases its work in the
conductivity of the liquids to control. They have a level controllers
associated with a relay.
1.3
Technical data
Manufacturer
Talleres Filsa, S.A.U.
Address
Bernat Metge, 33
08100 Mollet del Vallès
(Barcelona)
Name
Level control relay
Type
L-ED
ref:
2750-1-...
Suppyl voltage
2750-1-230
230 V AC (50 ... 60 Hz)
2750-1-115
115 V AC (50 ... 60 Hz)
2750-1-024
24 V AC (50 ... 60 Hz)
2750-1-024-DC
24 V DC
2750-1-012-DC
12 V DC
AC models
1.7 W
DC models
1.2 W
2
Maximum cable section
Ø 1 ... 2.5 mm
AC models
DC models
Resistive AC
10 A / 250 V
Resistive DC
0.4 A / 200 V or 10 A / 24 V
Inductive AC
5 A / 250 V
Inductive DC
5 A / 24 V
Conductive probes could be supplied under request, as well as the
undecal socket for the mounting in a DIN rail.
It is necessary an electrode or a probe for each level and a
common electrode. If the tank is conductive, it could be used as
the common electrode.
As shown in 2.3, to keep the level of liquid between two points, it is
necessary to connect the 2 probes and the common reference to
the L-ED.
If only an independent signal should be indicated, it would be
enough to place a probe in the desired point, as well as the
common and a jumper connection must be mounted between the
terminals (5) and (6).
The DC L-EDs (24 V DC and 12 V DC), are manufactured with a
built-in selector. Changing this selector position, allows to choose
the operation mode between filling and emptying, without
modifying the relay output’s connections.
Power consumption
Relay output AC mod. for load
Maximum cable length
150 m, without shielding
100 m, without shielding
Relay output DC mod. for load
Ambient temperature
-20 °C ... +50 °C
Relative humidity
30 % ... 85 %
Lexan
Resistive AC
10 A / 250 V
Resistive DC
0.4 A / 200 V or 10 A / 24 V
Inductive AC
5 A / 250 V
Inductive DC
5 A / 24 V
Weight
0.18 kg
Current in probes line
AC models
4 mA
DC models
3.2 mA
Voltage in probes line
AC models
24 V AC
DC models
6.2 V AC
Insulation voltage
2.500 V AC
4
Insulation resistance
>10 M
Ù
6
Mechanical life
30x10 operations
Sensitivity
AC models
7 ... 100 k
Ù
DC models
8 ... 45 k
Ù
1.4
Materials
Housing
Cycoloy
LED visor
Buttons
Technyl
Terminals
Brass
1.5
Dimensions
Approximate measures are given in mm.
Function status
Relay engaged: red LED
Under voltage: green LED
Protection
IP20 according DIN EN60529
L-ED
Talleres Filsa, S.A.U.
www.filsa.es
•
•
•
•
•
E-08100 Mollet del Vallès (Barcelona)
Tel.
+34 93 570 46 01
Fax
+34 93 570 24 71 filsa@filsa.es
03
05/14
MI-LED-EN-03
© by FILSA
LED-001
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