SKU: LC-Sensor-Relay-5V
Tech info: https://www.mediafire.com/file/hsmsmt35a9my71i/LC-Sensor-Relay_EN.zip/file
Overview
LC 5A Over-current protection sensor module uses current transformer to collect the AC signal to achieve the relay over-current signal output within 0-5A. Relay pull while over-current, relay released while not over-current. Users can use the relay COM, NC, NO three ports to control the external circuit on and off, in order to achieve over-current protection.
Function features
1.Operating voltage: DC5V
2.Operating current: <20MA
3.Operating frequency range: 20Hz ~ 400Hz
4.Output mode: switch signal output
5.Maximum detection wire diameter: 5.2mm
6.Mounting hole: hole diameter is 3mm, hole distance is 52.5mm
7.Operating environment: -40 ℃ ~ +85 ℃
8.Current detection resolution can change the parameter of resistance parameters
9.Output over-current switching signal output
10.Over-current signal setting critical point adjustable,the current detection range AC0.3A-5A
Hardware intrroduction and description
1.Board size: 38*44mm
2.Board function description
Interface description
VCC: Operating voltage positive
GND: Operating voltage negative
NO: Normally open, the relay pulls before the NO and COM disconnect, short-circuit after the suction
COM: common, relay common interface
NC: Normally closed, the relay before the NC and COM short-circuit, pull off after
Using instructions: By setting the potentiometer to set the overcurrent protection point, the clockwise adjustment reduces the detection current.
As bellows:
1.Measured the wire through the current transformer , connect VCC and GND to DC5V power supply;
2.Adjust the potentiometer, when you hear the sound of the relay pull (can be measured with a multimeter COM and NO whether was turned on, if connected to the relay means activated), then reduce or cut off the current flowing that through the tested wire , if the relay release at this time that over-current protection point has been identified (available to multimeter COM and NC measurement whether is connected, if connected to the relay means been released);
3.When reduce or cut off the current flowing through the wire , the relay is not released, will still need to continue to adjust the potentiometer to find the over-current protection point.
