Instruction manual

136
Alarm Display
Digital
Operator
RUN (Green)
ALARM (Red)
Inverter
Status
Explanation
Causes and
Corrective Actions
Warning
Fault
contacts
do not
change
state.
OL3
Blinking
OP?
Blinking
SE
Blinking
OP? (Constant setting
error when the constant
setting is performed
through the MEMOBUS
communications)
OP1: Two or more values
are set for multi-
function input
selection.
(constants n050 to
n056)
OP2: Relationship among
V / f constants is not
correct.
(constants n011,
n013, n014, n016)
OP3: Setting value of
motor rated current
exceeds 150% of
inverter rated current.
(constant n036)
OP4: Upper / lower limit
of frequency
reference is reversed.
(constants n033,
n034)
OP5: (constants n083 to
n085)
Check the setting values.
OL 3 (Overtorque
detection)
Motor current exceeded
the preset value in
constant n098.
Reduce the load, and
expand the accel / decel
time.
SER (Sequence error)
Inverter receives
LOCAL / REMOTE select
command or
communication / control
circuit terminal changing
signals from the multi-
function terminal while the
inverter is outputting.
Check the external circuit
(sequence).
No fault
output.
Automatic
reset after
cause
removed.
UL3
UL3 (Undertorque detection)
When V/f mode is selected:
The inverter’s output current
was less than the undertorque
detection level (n118).
When vector mode is selected:
The output current or output
torque was less than the
detection level (n097 or n118).
Operation when undertorque
is detected will be determined
by the setting in n117.
• Check the setting in n118.
• Check the operating
conditions, and remove
the cause.