Agatige Signal Generator Analog Signal Generator 4-20mA Generator Adjustable Analog Quantity Current Signal Generator Module

Specifications: Type: Current generator Model: 4-20mA Potentiometer Installation Hold Diameter: 10mm SizeL*W*H: 73*54*30mm/2.9*2.1*1.2in Hole Spacing: 61mm/2.4in Suitable Screws: M3 NOT included Weight: 74gapprox. Wiring: 3-32V: DC power supply positive GNDleft: Power supply negative GNDright: 4-20mA output current negative 4-20mA-OUT: 4-20mA output current positive Potentiometer: Adjust output range of 4-20mA clockwise to increase counterclockwise to reduce Instruction: About Output Impedance Matching: Output signal resistance must meet the following requirements According to the formula:I=U/Rcurrent = voltage/resistance So the maximum current that signal receiving end can generate is equal to dividing power supply voltage by signal resistance. In this way current generator still has some resistance. Thus concludes to a formula: Power supply voltage/signal internal resistance + current generator internal resistance = output constant current Our 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