Incorrect wiring of an inverter causes problems
Problem description
- Immediately after commissioning an inverter-driven CHP unit, several bus systems failed in the customer’s system. M-Bus, Profibus and Modbus modules were affected.
- As a result of the bus malfunctions, there were constant error messages and false alarms in the process control and thus also failures of the entire plant.
- Analyses of the system suppliers of the control equipment as well as complaints to the supplier of the CHP with subsequent inspection by the manufacturer did not lead to any results.