Name | Level control relay |
---|---|
Type | L-ED – ref: 2750-1... |
Supply 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 |
Power consumption: | |
AC models | 1,7 W |
DC models | 1,2 W |
Galvanic isolation | Yes |
Max. cable section | Ø 1 – 2,5 mm2 of a good insulation cable and normally without shielding. If the cable are connected in parallel, it is recommended the installation of shielded cable and with earth connection. The minimum insulation resistance should be minimum 200 kΩ. |
Max. cable length | (depending on cable type and the application) |
AC models | 150 m, without shielding |
DC models | 100 m, without shielding |
Relay output AC mod. for load | Resistive AC 8 A / 250 V Resistive DC 0,4 A / 200 V, 8 A / 24 V Inductive AC 2,5 A / 250 V Inductive DC 2,5 A / 24 V |
Relay output DC mod. for load | Resistive AC 10 A / 250 V Resistive DC 0,4 A / 200 V, 8 A / 24 V Inductive AC 5 A / 250 V Inductive DC 5 A / 24 V |
Function status | Relay engaged: red LED Under voltage: green LED |
Ambient temperature | -20° C – +50° C |
Relative humidity | 30 % – 85 % HR |
Protection | IP20B according to DIN EN60529 |
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 |
Insulation resistance | >104 MΩ |
Mechanical life | 30x10 operations |
Sensitivity | |
AC models | 7 kΩ – 100 k |
DC models | 8 kΩ – 45 k |
Materials: | |
Housing | Cycoloy |
LED visor | Lexan |
Buttons | Technyl |
Terminals | Brass |
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.
Conductive probes could be supplied under request, as well as the undecal socket for the mounting in a DIN rail.
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.
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.
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.
Mechanical connection
It is simple: the device has to be installed in a DIN rail using the undecal socket. The connection of the probe/s depends on each application and the requested models of the probes.