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PROTECTIVE FUNCTIONS
139
5.2.12 Inspecting display on parameter unit and status LED
In response to the occurrence of a fault, the display unit of the inverter automatically
displays the code of the detected fault and MNS Status LED shows the status of the
detected fault.
Display
FR-PU04
(Option)
LED
Possible Causes Check Corrective Action
E.OPT Blinking Red
Connection time-
out,
Master designated
inverter for
communication, but
sent no messages
within time limit=4
×
EPR.
Master station has
not been
disconnected from
network.
Reset the inverter,
Reconnect the
network,
Master is up and
running,
Master sends
messages within
time limit.
0.00 Steady Red
Duplicate node
address;
Network power off;
Network cable
offline;
Inverter is only
node, not even a
Master is present;
Network damaged.
No duplicate node
address;
Network power on;
No damage to
network;
All cables are in
proper connection;
Master is on
network.
Check required items
in the left box,
Reset the inverter,
Restart the network.