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9. Fault Diagnosis
209
Detected as
an alarm
only. Fault
contact out-
put is not ac-
tivated.
Waiting to receive data.
Check communications
devices.
Communications error
• Baud rate setting
error
Communications are
not established
because the baud
rate of the master
and the Inverter are
not the same.
⇓
Correct the baud
rate setting of either
the master or the
Inverter so that the
rates will be same.
• MAC ID duplicated
Check whether the
MAC ID is dupli-
cated in another
device in the
DeviceNet network.
⇓
Correct the MAC ID
setting so that it is
not the same as that
of another device
and turn ON the
Inverter's power
again.
dE1(I/O message length
disagreement)
Inverter is not operating
correctly because the I/O
data was not sent cor-
rectly from the master.
The length of the polled
I/O message registered
in the master and the
length of the connection
path set in n148 and
n149 do not match.
⇓
Change the settings so
that the length of the
polled I/O registered in
the master will be the
same as the length of
the connection path set
in n148 and n149.
If the Run command is
ON when a fault is reset,
"rUn" will flash.
"rUn" stops flashing if the
Run command is turned
OFF.
Inverter will not operate
while "rUn" is flashing.
Alarm Display
Inverter
Status
Description
Causes and Correc-
tive Actions
Digital
Operator
RUN (Green)
ALARM (Red)
Flashing
Flashing
Flashing