Errors During Autotuning - YASKAWA Varispeed G7 Instruction Manual

Errors During Autotuning

The errors that can occur during autotuning are given in the following table. If an error is detected, the motor
will coast to a stop and an error code will be displayed on the Digital Operator. The error contact output and
alarm output will not function.
Display
Data Invalid
Minor Fault
STOP key
Resistance
No-Load Current
Rated Slip
Accelerate
PG Direction
Motor Speed
I-det. Circuit
Leak Inductance
PG Open
V/f Over Setting
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7
Table 7.5 Errors During Autotuning
Meaning
There is an error in the data input for
autotuning.
There is an error in the relationship
between the motor output and the motor
rated current.
Motor data error
The is an error between the no-load cur-
rent setting and the input motor rated
current (when autotuning for only line-
to-line resistance is performed for vector
control).
A minor fault occurred during
Alarm
autotuning (xxx).
The STOP Key was pressed to cancel
STOP key input
autotuning.
Line-to-line resis-
Autotuning was not completed in the
tance error
specified time.
No-load current error
The results of autotuning has exceeded
the setting range for a user constant.
Rated slip error
Acceleration error
The motor did not accelerate in the spec-
(detected only for
ified time.
rotational autotuning)
There is a faulty connection between the
Motor Direction
Inverter and PC (A or B phase) or the
Error
Inverter and Motor (U, V, or W).
Motor speed error
The torque reference was too high
(detected only for
(100%) during acceleration (for open-
rotational autotuning)
loop vector control only).
The current flow exceeded the motor
rated current.
Current detection
The detected current sign was the oppo-
error
site of what it should be.
There is a phase fault for U, V, or W.
Leakage inductance Autotuning was not completed in the
error specified time.
PG Disconnection PG pulses were input when the Inverter
Detected was outputting a frequency.
The torque reference exceeded 100%
V/f settings exces-
and the no-load torque exceeded 70%
sive
*
during autotuning.
Probable causes Corrective Actions
• Check the input data.
• Check the capacity of the Inverter and
motor.
• Check the motor rated current and no-
load current.
• Check the input data.
• Check wiring and the machine.
• Check the load.
• Check the input data.
• Check motor wiring.
• If the motor is connected to the
machine, disconnect it.
• Increase C1-01 (Acceleration Time 1).
• Increase L7-01 and L7-02 (Reverse
Torque Limits) if they are low.
• If the motor is connected to the
machine, disconnect it.
• Check the PG wiring.
• Check the motor wiring.
• Check the PG rotation direction and
F1-05 (PG rotation).
• If the motor is connected to the
machine, disconnect it.
• Increase C1-01 (Acceleration Time 1).
• Check the input data (particularly the
number of PG pulses and the number
of motor poles).
Check the current detection circuit,
motor wiring, current detector, and
installation methods.
Check motor wiring.
Fix the broken/disconnected wiring.
• Check and correct the settings.
• Disconnect the load from the motor.