Siemens SED2 - Manual (Page 38)

SED2 AOP Operating Instructions
30 Siemens Building Technologies
Multiple Faults
If a SED2 VFD or network of VFDs reports more than one fault condition, the AOP displays all
fault messages by cycling through them until they are all cleared. See Fault Indication/Fault
Screen in this chapter to acknowledge each fault message.
Multiple Warnings
If a SED2 VFD or network of SED2 VFDs reports more than one warning condition, the AOP
displays all warning messages by cycling through them until the conditions causing the warning
messages cease to exist.
Simultaneous Faults and Warnings
If a SED2 VFD or network of VFDs reports a fault condition and a warning condition, the AOP
displays all messages by cycling through them. The AOP first displays a fault message and then
a warning message separated by a 2-second interval.
This cycle continues until all fault and warning messages display. The cycle repeats itself until all
fault messages are either acknowledged or cleared and the conditions causing the warning
messages cease to exist.
SED2 VFD Fault/Warning Record P0947
For a VFD that connects to an AOP, the diagnostic menu provides access to recent fault history.
In master mode, a two-digit USS slave address identifies each SED2 VFD.
NOTE: Regarding fault history, the AOP time display function is only available if the AOP
was connected to the SED2 VFD at the time of the fault.
Use the following procedure to access the AOP diagnostics facilities:
1. From the main menu, use and to scroll through the list of options and to highlight the
Diagnostics item.
Press
to confirm the selection.
2. If no fault history exists, press or to return to the main menu.
If fault history exists, use and to scroll through the fault history. Simultaneously press
and to display the help screen which contains details of the relevant corrective action.
Press and hold to return to the main menu.