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
Features:
- Current detection resolution can change the parameter of resistance parameters
- Output over-current switching signal output
- Over-current signal setting critical point adjustable
Specifications:
- Operating voltage: DC12V
- Operating 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 distance is 52.5mm
- Operating environment: -40 ℃ ~ +85 ℃
- The current detection range :AC0.3A-5A
Connections:
- 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.
How to Operate:
By setting the potentiometer to set the overcurrent protection point, the clockwise adjustment reduces the detection current
As bellows:
- Measured the wire through the current transformer , connect VCC and GND to DC12V power supply;
- 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)
- 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.
