4-20mA Current Signal Generator Module Adjustable Analog Output for PLC/Inverter Testing 3.3-30V DC Input(4-20mA)

Specifications:Type: Current generatorModel: 4-20mAPotentiometer Installation Hold Diameter: 10mmSize(L*W*H): 73*54*30mm/2.9*2.1*1.2inHole Spacing: 61mm/2.4in Suitable Screws: M3 (NOT included)Weight: 74g(approx.)Wiring:3-32V: DC power supply positiveGND(left): Power supply negative GND(right): 4-20mA output current negative4-20mA-OUT: 4-20mA output current positivePotentiometer: Adjust output range of 4-20mA, clockwise to increase, counterclockwise to reduceInstruction:Power supply voltage/(signal internal resistance + current generator internal resistance) = output constant currentOur module power supply is 5-32V voltage, so if using low voltage power supply, and the signal internal resistance is large, the output constant current will not be enough.Signal matching requirements is given below:For 24V power supply, signal resistance shall not be greater than 1000 ohms.For 12V power supply, signal resistance shall not be greater than 500 ohms.For 5V power supply, signal resistance shall not be greater than 200 ohms.If your signal resistance is greater than the above parameters, you can improve the power supply voltage or reduce internal resistance, to ensure a enough constant current source.Note that the power supply voltage cannot be more than 32V.This module can be used for PLC, frequency converter, servo; and when using these products, the module's voltage should match your interface. If you are not sure, you can try 5V first, then 12V or 24V power supply. Under the condition of normal function, use low voltage as far as possible.There is another way:In general, PLC, frequency converter, or server has a COM +, COM - power output interface, power supply can be directly from here.Package Includes:1 x Signal Generator

• ‌Precision Current Source:‌ Generates adjustable 4-20mA analog signals via potentiometer (10mm knob) for industrial instrument calibration and testing
• ‌Wide Power Compatibility:‌ Works with 3.3-30V DC (recommended 12-24V) and<30mA, ideal for field use with portable power supplies
• ‌Dual Ground Outputs:‌ Separate GND terminals for power input and current output avoid ground loops in PLC/frequency converter systems
• ‌Compact & Mountable:‌ 73×54×30mm design with M3 screw holes without screw (61mm spacing) for secure panel installation
• ‌Multi-Device Testing:‌ Universal power supply for validates sensors, servos, and control systems requiring 4-20mA input signals