Instruction manual
137
Alarm Display
Digital
Operator
RUN (Green)
ALARM (Red)
Inverter
Status
Explanation
Causes and
Corrective Actions
EF (Simultaneous FWD/
REV run commands)
When FWD and REV
run commands are
simultaneously input
for over 500ms, the
inverter stops according
to constant n005.
BB (External baseblock)
Baseblock command at
multi-function terminal is
active, the inverter output
is shut OFF (motor coasting).
Temporary condition is cleared
when input command is
removed.
STP (Operator function
stop)
STOP
RESET
is pressed
during running by the
control circuit terminals
FWD / REV command, or by
the run command from
communications
The inverter stops according
to constant n005.
STP(Emergency stop)
Inverter receives emergency
stop alarm signal.
Inverter stops according
to constant n005.
Check the external circuit
(sequence).
Check the external circuit
(sequence).
Check the external circuit
(sequence).
Open FWD/REV
command of control
circuit terminals .
FAN(Cooling fan fault)
Cooling fan is locked.
Check the following:
• Cooling fan
• Cooling fan wiring is not
connected.
CE (MEMOBUS)
communications fault
FBL (PID feedback loss
detection )
PID feedback value drops
below the detection level.
When PID feedback loss is
detected , the inverter
operates according to the
n136 setting.
Option card communications
fault.
Communication fault has
occured in a mode that run
command and frequency
reference are set from the
communication option card.
Check the communication
devices or communication
signals.
Check the mechanical
system and correct the cause
,
or increase the value
of n137.
Check the communication
devices or communication
signals.
or
Warning
Fault
contacts
do not
change
state.
OH3
No fault
output.
Automatic
reset after
cause
removed.
OH3 (Inverter overheat
alarm)
The inverter overheat alarm
(OH3) was input from a
multi-function input terminal
(S1 and S7).
Clear the multi-function
input terminal’s inverter
overheat alert input.
EF
Blinking
BB
Blinking
S P
Blinking
FRN
Blinking
CE
Blinking
BU5
Blinking
FBL
Blinking