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Alarm Display
Digital
RUN (Green)
Operator
ALARM (Red)
Flashing
Flashing
Flashing
or
Flashing
Flashing
Flashing
Inverter
Description
Status
Detected as
BB (External baseblock)
an alarm
BASEBLOCK command
only. Fault
at multi-function termi-
contact out-
nal is ON and the Invert-
put is not ac-
er output is OFF (motor
tivated.
coasting). Condition is
cleared when input com-
mand is removed.
EF (Simultaneous FWD/
REV RUN commands)
When FWD and REV
RUN commands are si-
multaneously input for
over 500 ms, the Inverter
stops according to con-
stant n005.
STP (Operator function
stop)
was pressed
during running via a con-
trol circuit terminal FWD/
REV command, or by a
RUN command from
communications. The In-
verter stops according to
constant n005.
STP (Emergency stop)
Inverter received emer-
gency stop alarm signal.
Inverter stops according
to constant n005.
FAN (Cooling fan fault)
Cooling fan is locked.
FBL (PID feedback loss
detection)
PID feedback value
dropped below the de-
tection level. When PID
feedback loss is detect-
ed, the Inverter operates
according to the n136
setting.
A communications fault
occurred.
9. Fault Diagnosis
Causes and Correc-
tive Actions
Check the external cir-
cuit (sequence).
Check the external cir-
cuit (sequence).
Check the external cir-
cuit (sequence).
Check the external cir-
cuit (sequence).
Check the following:
•
Cooling fan
•
Cooling fan connec-
tion
Check the mechanical
system and correct the
cause, or increase the
value of n137.
Check communications
signals.
211
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