Digital Output DC 5.5V ACS712ELC Current Detector Sensor Module For
Arduino Short Circuit Detection
Feature
AC current sensor module Maximum 20A
1, the universal module dimensions
2, the main chip: op amps, transformers
3, the working voltage: DC5.5V
4, the output of the switching output
5, the current detection range: AC maximum 20A
6, the current detection resolution can change the resistance
parameter settings
7, over-current signal is set to the critical point is adjustable,
set the resolution 0.3A
8, with fixed mounting holes for easy fixed installation.
9, The current sensor chips: ACS712ELC-30A
10,The module can measure the positive and negative 20A,
corresponding to the analog output 100mV / A
11,Pin 5V power supply, on-board power indicator
12,Using gold plated circuit boards
13,No test current through the output voltage is VCC / 2
14, High accuracy current sensor
Principle
The measuring chip used in this sensor is ACS712ELC-20A, which can
measure the current ±20A, the corresponding analog output is 100mV
/ A; when there is no current, the output voltage is VCC / 2; the
sensor avoids the magnetic field influences based on Hall detection
principle .
Current sensors operate as the sealed secondary of a current
transformer while the conductor carrying the current to be measured
functions as a one turns primary. Measurement accuracy can be
improved by increasing the number of primary turns. Applications
include detection of branch circuit overload and load drop or
shutdown. It is a line of fully integrated Hall-effect current
sensor IC that provide highly accurate, low noise output voltage
signals that are proportional to an applied AC or DC current. These
ICs are in high volume production in many applications, including
automotive HEV inverters and electronic power steering (EPS)
systems, and in industrial and consumer inverters. Current sensor
ICs allow design engineers to use Hall-effect-based current sensor
ICs in new applications where increased energy efficiency or new
operating features are required.
Technical Parameters
Product Name:Current Detection Sensor
Power requirements:+3.0V -5.5V
Signal Type:Analog signal
Interface mode: XH2.54*3
Pin definition:S-Signal output,V-Power,G-Ground,+-Current output,-
-Current output
Applications
| Current measurement | Power metering |
| Closed loop current control | Over-current protection |
Output Voltage versus Sensed Current
ACS712 Fully Integrated, Hall Effect-Based Linear Current Sensor IC
with 2.1 kVRMS Isolation and a Low-Resistance Current Conductor
Features and Benefits
▪ Low-noise analog signal path
▪ Device bandwidth is set via the new FILTER pin
▪ 5 μs output rise time in response to step input current
▪ 80 kHz bandwidth
▪ Total output error 1.5% at TA = 25°C
▪ Small footprint, low-profile SOIC8 package
▪ 1.2 mΩ internal conductor resistance
▪ 2.1 kVRMS minimum isolation voltage from pins 1-4 to pins 5-8
▪ 5.0 V, single supply operation
▪ 66 to 185 mV/A output sensitivity
▪ Output voltage proportional to AC or DC currents
▪ Factory-trimmed for accuracy
▪ Extremely stable output offset voltage
▪ Nearly zero magnetic hysteresis
▪ Ratiometric output from supply voltage
