A31-RS485 AC110-220V Embedded Intelligent Digital Display Switch Ammeter Built-in Transformer with Upper and Lower Limit Alarm    Features:  1. The current smart meter is used for the measurement and display of single current in electrical circuits, and can be attached to a relay alarm output,  2. Alarm delay and alarm return can be set to realize real-time current monitoring and alarm output function.  3. The overcurrent of the conveyor belt stops, the current returns to normal, and the automatic reset works  4. Flush installation  5. The upper and lower limits can be set    Specifications:  Model: A31-RS485 intelligent switching instrument  Voltage: AC110-220V  Direct measurement: AC 0-5A  An external current transformer AC*/5A is attached  Can isolate monitoring and monitoring 100A, 200A, ·.·  Accuracy class: 0.5 class  AC input signal frequency: 45~65Hz  sampling rate: 2 times/s  Input loop power consumption: <05VA  Auxiliary power supply: 220V 50/60Hz, <3VA (other auxiliary power supply please specify when ordering)  Alarm output: upper and lower limit alarm output from the same relay, contact capacity 6A/250VAC, 6A/30VDC, resistive load  Working temperature: -10~50 °C  Working humidity: < 85%RH     Operation Introduction:  1. SET key: set key; Press and hold for 2 seconds to enter the setup mode, and then press to switch to the next parameter setting.  2.← Shift Left key: Press this key to move the cursor one place to the left.  3.↓ Decrease key: Press this key to decrement the value of the menu parameter.  4.↑Increase key: Press this key to increment the menu parameter value.    Application Scenarios:  1. Current overload protection  2. Monitor whether the equipment works normally and there is no current to the switching signal  3. Equipment linkage, such as linkage fans, water pump dust removal equipment, environmental protection equipment, etc  4. Control the feeder to feed automatically, block the machine to stop the normal operation of the feeding conveyor belt, automatically resume feeding 5. Linkage fan, equipment shutdown, fan delay shutdown 6. Give PLC signal, single-chip microcomputer switch signal    Installation Method:  The size of the mounting hole corresponding to the shape of the instrument  Make a hole in the installation screen, embed the instrument into the mounting hole, and then put the two mounting accessories into the clamping slot of the instrument housing, and push it tightly by hand    Package Included:  Carton packaging  A31-RS485 Intelligent Switching Meter 5A  A31-RS485 Intelligent Switching Meter 50A Meter + Instrument Transformer*1  A31-RS485 Intelligent Switching Meter 100A Meter + Instrument Transformer*1  A31-RS485 Intelligent Switching Meter 200A Meter + Instrument Transformer*1  A31-RS485 Intelligent Switching Meter 300A Meter + Instrument Transformer*1