Bryce5102 (Customer) asked a question.
DURApulse GS23-45P0 Instantaneous DC-BUS Voltage Parameter
I have an application where I need to monitor the instantaneous dc bus voltage in the onboard plc program. I cannot locate any drive parameters that store this value. My next thought is to output the voltage on the AO 4-20mA and pick it up on the AI pin in the PLC although this seems quite silly. Do anyone know of alternative means to doing this?
Thanks!
I monitor the DC buss voltage of a GS20, just because. It flies all over the place. You will need to determine when to take the sample and move the value to a data file.
Add: I have an ethernet card installed in the drive and read the parameter via it.
Good morning.
In the drive manual in Appendix B: Option I/O and Communication Cards on Page B-17 shows a couple of registers for the DC Bus Voltage that are read only status registers using Modbus TCP. Try register 48708 DC bus voltage XXX.X V if that's the type of value that you're looking to get back into your PLC.
The same register could be read through Ethernet/IP and is also outlined in the Appendix B: Optional I/O and Communication Cards on Page B-24 which shows the Class, Instance, and Attribute of the DC bus voltage XXX.X V as Explicit Class 0x300, Instance 34 (0x22), Attribute 0x03.
Here's the link to the full GS20 series drive manual: https://cdn.automationdirect.com/static/manuals/gs20m/gs20m.pdf