Field Voltage Too High
Beckhoff · EL2904 TwinSAFE Fail-Safe Output Terminal
What does Diag 2 Flash 6 mean?
The voltage supplied to the power contacts of the terminal is too high. This could be due to a consistent overvoltage on the power contacts or brief external influences such as switching off contactors causing voltage spikes. An overvoltage can damage internal components of the terminal and compromise its safe operation.
Complete Troubleshooting Guide
- 1
Reduce the voltage at the power contacts to within the specified range and reset the error display through a PowerOn Reset of the terminal.
- 2
Implement an R/C or diode-based protective circuit on connected actuators to suppress brief overvoltage spikes caused by external influences.
- 3
Take suitable EMC measures if electromagnetic interference is suspected to be causing voltage fluctuations.
- 4
If the issue persists despite voltage verification and protective measures, replace the terminal due to a suspected internal defect.