Alarm code
hex
Name Overview
17,18 (0L1,0L2) Motor 1, 2 overload
The motor temperature is calculated from the output
current of the inverter, and the motor temperature
has reached the trip level.
23 (ER5)
EtherCAT communications error
EtherCAT communications error occurs one or more
times
2F (ErE)
Speed mismatch (Excessive
speed deviation)
The deviation in the speed adjuster (deviation be-
tween the speed command and speed estimated val-
ue/detected speed) continued for more than the set
time (d22) outside the set range (d21).
38 (Ero) Position control error
During a servo lock, the position error becomes four
rotations or more by motor shaft conversion due to
insuf
ficient gain of the position control system
Minor Alarm Selectable Events
The following events can be set to minor alarms.
Alarm code Name Overview
65 (0L) Motor overload early warning
Early warning before the occurrence of motor over-
load alarm.
66 (0H)
Cooling fin overheating early
warning
Early warning before the occurrence of cooling fin
overheat tripping.
67 (LiF) Lifetime alarm
Any one of the main circuit capacitor used in the in-
verter
, the capacitors on the printed circuit board,
and the cooling fan has reached the end of its life
68 (rEF) Reference loss The analog frequency reference is disconnected.
69 (PiD) PID warning output
W
arning related to PID control (Absolute value warn-
ing/Deviation warning).
6A (UTL) Low output torque detection
The output torque continued to be below the low tor-
que detection level for more than the time set in the
timer
.
6B (PTC)
Motor overheat detected by ther-
mistor (PTC)
T
emperature detection by the PTC thermistor of the
motor.
6C (rTE)
Inverter life (Cumulative operation
time of motor)
The cumulative operation time of motor has reached
the set maintenance time.
6D (CnT)
Inverter life (Number of startups)
The number of startups has reached the set number
of maintenance.
Method of selecting light alarm causes
The causes of the light alarm that can be selected are allocated to 0 to 15 bits as shown below, and
are set and displayed in hexadecimals. By setting the bit corresponding to the cause to be selected
to 1, the concerned cause can be treated as a light alarm.
Light Alarm Selection 1 (3008Hex-52Hex)
Bit Alarm code Description Bit Alarm code Description
15 46 (0H6)
Inrush current prevention
resistor overheat
7 - -
14 - - 6 18 (0L2) Motor 2 overload
13 - - 5 17 (0L1) Motor 1 overload
8 Other Functions
8-96
M1 Series EtherCAT Type User’s Manual (I670)
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