98
Detected as
an alarm only.
Fault contact
output is not
activated.
CAL (MEMOBUS
communications
waiting)
Correct data has not been
received from the PLC
when the constants n02
(RUN Command Selec-
tion) is 2 or n03 (Frequen-
cy Reference Selection)
is 6, and power is turned
ON.
Check communications
devices and transmission
signals.
OP
(Constant set-
ting error when con-
stants are set
through MEMOBUS
communications)
O
P1: Two or more val-
ues are set for
multi-function in-
put selection.
(constants n36 to
n39)
OP2: Relationship
among V/f con-
stants is not cor-
rect. (constants
n09, n11, n12,
n14)
OP3: Setting value of
motor rated cur-
rent exceeds
120% of Inverter
Rated Current.
(constant n32)
OP4: Upper/lower limit
of frequency refer-
ence is reversed.
(constants n30,
n31)
OP5: Setting values of
jump frequencies
1 and 2 are not ap-
propriate.
(constants n49,
n50)
Check the setting values.
OL3 (Overtorque de-
tection)
Motor current exceeded
the preset value in con-
stant n60.
Reduce the load, and in-
crease the acceleration/
deceleration time.
SER (Sequence er-
ror)
Inverter received LOCAL/
REMOTE command or
communications/control
circuit terminal changing
signals from the multi-
function terminal while the
Inverter output is ON.
Check the external circuit
(sequence).
Alarm Display
Inverter
Status
Description
Causes and
Corrective Actions
Digital
Operator
RUN (Green)
ALARM (Red)
Flashing
Flashing
Flashing
Flashing
