Omron VARISPEED L7 User Manual

7-15
7
Leakage Induc-
tance Fault
The leakage inductance measurement
caused an error.
Auto-tuning was not completed in the
specified time.
• Check the motor wiring.
• Check the motor rated current
input value
Auto-tuning result is outside the
parameter setting range.
The leakage inductance tuning current
was too high or too low (Closed Loop
Vector for PM only)
Reduce or increase the current level
for leakage inductance tuning by
changing parameter n8-46.
Z_SRCH_ERR
(PM motor tuning only)
All encoders
The motor speed exceeded 20 rpm at
the auto tuning start.
The magnetic pole position tuning
could not be performed in the specified
time.
• Remove the ropes and repeat the
tuning
• Check the encoder rotation direc-
tion and if necessary change
F1-05.
Encoder with Z-pulse
The difference between two measure-
ments of the magnet pole position was
higher than 3°.
Serial encoders
The difference between two measure-
ments of the magnet pole position was
higher than 5°.
An encoder serial communication error
has occurred during the tuning.
• Check the encoder wiring (order,
shield etc.)
• Check the encoder power supply.
• Replace the encoder.
LD_ERR
(PM motor tuning only)
Inductance error
The inductance could not be measured
in the specified time during the motor
rotation.
Check the motor wiring
RS_ERR
(PM motor tuning only)
Line-to-line resistance error
The resistance could not be measured
in the specified time during the motor
rotation or the calculated value was out
of range.
• Check the motor wiring
• Check the motor input data
KE_ERR
(PM motor tuning only)
Voltage constant error
The voltage constant could not be mea-
sured in the specified time during the
motor rotation.
Check the motor wiring
End - 1
V/f Over Setting
V/f Settings Alarm
Displayed after auto-tuning is complete
The torque reference exceeded 100%
and the no-load current exceeded 70%
during auto-tuning.
Check and correct the motor set-
tings
If the motor and the machine are
connected, disconnect the motor
from the machine.
End - 2
Saturation
Motor Core Saturation Fault
Displayed after auto-tuning is com-
plete.
Detected only for rotating autotuning
During auto-tuning, the measured val-
ues of motor iron-core saturation coef-
ficient 1 and 2 (E2-07 and E2-08)
exceeded its setting range.
Check the input data.
Check the motor wiring.
If the motor and the machine are
connected, disconnect the motor
from the machine.
End - 3
Rated FLA Alm
Rated Current Setting Alarm
Displayed after auto-tuning is complete
During auto-tuning, the measured value
of motor rated current (E2-01) was
higher than the set value.
Check the motor rated current
value.
Table 7.5 Auto-tuning Faults
Display Meaning Probable causes Corrective Actions

Omron VARISPEED L7 Specifications

General

Brand	Omron
Model	VARISPEED L7
Category	Inverter
Language	English