Week 13 : Configuration of Voltage Range

 

The default program for power supply - Voltage Range 150 V.

•  For ATU/GATU , we need to supply 235 V to each phase. With the Voltage Range 150V is being set by default, the max voltage can only supply up to 150V. 

• Hence, we are required to configure the VOLTAGE RANGE to 300V.

 

This is the VI  that we use to configure the VOLTAGE RANGE.

 

This is how we connect the VI in the program to improve on it. 

 

 After we set the VOLTAGE RANGE to 300 V, the power supply put itself into HI RANGE mode which will activate its RELAY internally to support the flow of high voltage.

• The switching of the RELAY produces tremendous noise which interfere the communication and data acquisition between each instruments and therefore interrupt the program.

• Therefore, we decided to use this FLAT SEQUENCE STRUCTURE to arrange the flow of each part of programs.

• We arranged the program of power supply in the SEQUENCE 1,so that when the program runs,it will first finish initializing the power supply and switching of relay to HI RANGE, then only start to initialize other 3 instruments.

• In between, we added in some buffer time before the program start to initialize the 3 instruments.It is 5 seconds.

• Below is the VI and how we connect the TIME DELAY in the program.