Icos LA12N-40 Manual

Operation
NO
Normally Open
Typical connection to contactor
L1
A1
Contactor
A2
L2
The sensors work in all voltage and current ranges displayed in the table bellow:
Operating Voltage Max. Switching Power Max. Switching Current
110Vac 20VA
220Vac 20VA
5Vdc 2.5W
12Vdc 5W
24Vdc 10W
24Vac: NOT recommended
Term of Warranty
For installations according to this guide:
02 (two) years warranty. Incorrect installation cancels the warranty.
All sensors have been tested and approved during the manufacture process.
Chemical products require tests by the customer to verify compatibility
with the constructive material of the sensor.
Liquids with ferrous particles require technical analysis: the sensor has
magnetic component inside.
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Electrical contact of sensors - Attention to install
Reed Switch 20W/VA: Protect the electrical contact of your sensor
Reed Switches are hermetically sealed
contacts actuated by a magnetic field.
The life expectancy of a reed switch refers to a kind of load to be
used. Reed Switches of the highest reliability are applied in our
sensors, and their life expectancy can reach above two million
operations. However, when they are switching lamps, inductive or
capacitive loads, this number may decrease.
Switching Power
It is important to consider that the power specified by an electrical
load is often referred to the permanent working state.
For higher power, use an auxiliary relay or contactor as recom-
mended below.
Siemens 3RT1015 Contactor
Initial: 31.7VA
Rated: 5.1VA
Note: Reed Switches have reached over one million operations in
tests with contactor and K8
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NC
Normally Closed
NO or NC
rotating the
sensor
Switch NO/NC - SPST
Output Contact ON/OFF
Enclosure Rating IP66
! Never connect the sensor to a
motor, pump, lamp or any other
load over 20W.
Always use a contactor or relay.
Peak Current
0.2A 0.5A @20ms
0.1A 0.5A @20ms
0.5A 1A @20ms
0.5A 1A @20ms
0.5A 1A @20ms
available technical specifications
3032.9190
* snubber filter.
icos.us
Level Switches
180° Manual: Models for External Mounting
Connection with cable
length 20 to 40 meters:
For distances longer than 40m,
use 24Vdc voltage (without the resistor)
Connection with:
- Timing Relay
- Frequency Inverter
For installation with Relay Coupler,
use 4K7 10W resistor
Connection with
Contactor 24Vdc
Connection with Contactor
Initial Power
Rated Power
Should be less than 20W
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PROTECTION
IMPROVE THE REED SWITCH PERFORMANCE
• Switching inductive loads
K8* Filter mounted in parallel
with the coil of an AC contactor,
increases the contact life.
Reed Switch
2K2 - 2W
0.1µF 400V
? Risk of failure (welding of the Reed Switch Contact) due to CAPACITANCE, which
can occur depending on the distance and cable used in the connection to the contactor.
• Connecting the sensor to a contactor in long distances, use resistor:
This resistor dampens the peak voltage caused by the
capacitance of cables and electronic equipment input.
Important: For distances greater than 40m, use 24Vdc voltage.
• Connecting the sensor to an electronic equipment:
Important: For installation with relay coupler, use 4K7 10W resistor.
IMPORTANT!
YOU MUST CHECK BEFORE INSTALLATION
*
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3032.9190
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PROCEDURES BELOW
A1
Contactor
A2
L2
D = 20 ~ 40m
22R 5W
R
220R 5W
R
Flow Switches and Level Switches for liquids
Manual
B.03/Feb2019
Resistor 22R 5W
in series is required
*
Resistor 220R 5W
in series is required
*
KD Filter is required
*
pump
contactor
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DESCRIBED CAN
+
KD* Filter mounted in parallel
with the coil of a DC relay,
increases the contact life.
Reed Switch
+
BY448
or
1N4007
K8*
•Timing relay
•Frequency inverter
•Etc.