Features:
5A over-current 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.
Over-current signal setting critical point is adjustable.
Specification:
Type: 5A 12V Relay Module
Working voltage: DC12V
Working current: <20MA
Operating frequency range: 20Hz-400Hz
Output mode: switch signal output
Maximum detection wire diameter: 5.2mm
Mounting hole: hole diameter is 3mm, hole pitch is 52.5mm
Operating environment: -40℃ - 85℃
Current detection range: AC0.3A-5A
Board size: Approx. 38 * 44mm / 1.5 * 1.7in
Weight: Approx. 27g
Package list:
1 * Module
Functions:
Current detection resolution can change the parameter of resistance parameters.
Output over-current switching signal output.
Over-current signal setting critical point is adjustable.
Board 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, after pull off.
Using Instructions:
By setting the potentiometer to set the overcurrent point, the clockwise adjustment can reduce the detection current.
As bellows:
1. Measured the wire through the current transformer , connect VCC and GND to DC12V power supply;
2. Adjust the potentiometer, when you hear the sound of the relay pull (can be measured with a multimeter, to see if COM and NO was turned on, and 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 that over-current point has been identified (can use multimeter to see if COM and NC was 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 point.
