0-10V / 4-20mA
Analog reference method is very commonly used method of control. In this method, the control unit is a true voltage rectifiers ranging from 0-10V or 4-20mA current sends a ranging. Rectifier, located on the voltage / current measurement channel measures the signal of this control from over.More pre-defined settings to scale the output current according to the size of the incoming signal. In this process the size of the output reference signal is used with the highest value ratio the largest value. For example, the output current of 1000A 0-10V control voltage applied to a rectifier in the rectifier, the signal measured by each unit evaluates 1000/10 = 100A.Reference is 4.5V signal rectifier output current is 450A. Current is used as the reference case, the reference current change interval will be between 4-20mA. Rectifier output current of 4mA, and not lower than, the full output current of 20mA will come.4000A output current with a rectifier unit of reference for the current 4000/16 = 250A'e 4mA'den each will correspond to the next. For example, the reference current of 14mA output current is applied, will be 2500A. Most plating process flow control should only be used in a measurement channel is good enough. The ratio of signal to the output stream from the rectifier applies to the program and the device automatically performs the necessary regulation.Both the voltage and current independently control two separate measurement channels can be used in applications desired. In this case, charger, and another one of the channels output current with output voltage regulation ensures the desired proportioning. This condition usually occurs in the range of coating processes, the process is certain current voltage.For example, the process allows a maximum value of 5V 500A rectifier in both channels are sent to the appropriate reference. Regulates the desired value in each of two variable Rectifier. |