Infinite L-com SRCN-C410-3 User manual

DC SHUNT CURRENT SENSOR & OVER-CURRENT PROTECTOR
User Guide for SRCN-C410-3
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with this manual before powering the device. Please keep it handy for future reference. In case of any questions regarding the installation or use of
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M_L-com_SRCN-C410-3_08/2022_R1.0
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Product Description
This module is used to measure and monitor current consumption by utilizing a external shunt resistor. If the current exceeds a preset value, the relay
on the module is activated. Uses include building automation and facility management systems where acquiring information on energy usage can lead
to increased efficiency. They can also detect equipment issues and help prevent damage by detecting over-current and/or short-circuit conditions.
Features
 Low power consumption
 External shunt resistor
 Relay output
 35 mm DIN rail or panel mountable
 Includes 8in cable
Applications
 Building and facilities management
 HVAC
 Battery management system
 Electric fans
 Electric pumps
 Devices requiring over-current & short-circuit protection

Working voltage 24 VDC ± 0.5 VDC
Working current ≤ 25 mA
Detection range 0  20 A
Relay response time 300  500 ms
Output mode Relay output
Working environment
Temperature 0  65 °C
Humidity 0  95% RH
Installation mode
Pedestal Mounting on 35mm DIN rail
Module Mounting with screws
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Technical Parameters
Electrical Diagram
Note: On the PCBA, CK is the (NO) normally open terminal, COM is the open terminal, CB is the (NC) normally closed terminal.
Mounting Diagram
35mm DIN rail mounting: Mount the sensor module onto the DIN rail (dark black) as shown in the figure.

Board Mount
Mount the PCB to the enclosure with screws. Mounting hole diameter is 3mm.
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Notes
1. The module can only be powered by 24VDC.
2. Make sure the shunt is connected in series with the negative pole of the detection loop in order to read the signal normally.
3. Pay attention to the direction when connecting the signal terminal. The negative end of the load is the signal positive, and the negative end of the
power supply has the signal ground.
4. VR1 is a potentiometer for adjusting the threshold. The threshold voltage can be measured at point A to determine the value.
5. Due to the detection error of the shunt itself and the temperature drift of the op amp, there may be errors in the detection process. The module
power supply circuit and the current circuit under test should preferably be independent of each other, so as to avoid damage to the device
caused by interference and wiring errors.