Schneider Electric User Guide

Faults and Warnings
975-0240-01-01 4–17
Fault Types
There are three types of fault messages: automatic faults, manual faults, and
escalating automatic faults. Table 4-4 describes how they differ in their behavior
and how you can respond to them when they appear on the Conext System
Control Panel.
Inverter Operation After Faults
Conext XW+ operation changes when a fault occurs. How the operation changes
depends on the operating state of the unit when the fault occurred—inverting,
charging, grid or generator support, AC bypass, and so on—and on which fault
has occurred.
Table 4 -4 Fault Types and Behaviors
Fault type Behavior
Automatic faults Clear automatically if the fault condition that generated the
message goes away. You can also acknowledge
automatic faults without waiting for them to clear
automatically. It is not possible to clear a fault if the cause
of the fault is still present.
Manual faults Require you to clear them by:
• selecting Clear Faults on the Main Conext XW+ menu
or on the menu for the Xanbus-enabled device that
generated the fault (if the fault condition still exists, the
fault message reappears).
• correcting the condition that caused the fault.
Escalating
automatic faults
Clear automatically if the fault condition goes away, just
like an automatic fault.
However, if an escalating automatic fault occurs several
times within a defined time period, the escalating
automatic fault becomes a manual fault, requiring user
intervention. For example, if an AC Overload fault occurs
three times in five minutes, it will no longer clear itself and
become a manual fault. Then you must identify the
problem, correct the fault condition, and clear the fault.
Table 4 -5 Inverter Operation After Faults
Faults
State when Faults
Occur Action After Faults
F1, F2: AC Output Inverting Unit stops inverting and waits
for nominal AC output voltage
level, or a manual clear from
user.
F17 to F22:
Relay Welded
Inverting Unit stops inverting and waits
for user to clear fault.
Conext XW+ Owner's Guide NA (975-0240-01-01).book Page 17 Monday, November 27, 2017 10:00 AM