Yaskawa Matrix Converter - Manual (Page 337)

7
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‹ Errors During Auto-Tuning
The errors that can occur during Auto-Tuning 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.
Table 7.4 Errors During Auto-Tuning
Display Meaning Probable Causes Corrective Actions
Data Invalid Motor data error
There is an error in the data input for
Auto-Tuning.
There is an error in the relationship
between the motor output and the motor
rated current.
The is an error between the no-load cur-
rent setting and the input motor rated
current (when Auto-Tuning for only
line-to-line resistance is performed for
vector control).
• Check the input data.
• Check the capacity of the MxC and
motor.
• Check the motor rated current and no-
load current.
Minor Fault Alarm
A minor fault occurred during Auto-
Tuning (
††† ).
• Check the input data.
• Check wiring and the machine.
• Check the load.
STOP key STOP key input
The STOP key was pressed to cancel
Auto-Tuning.
Resistance
Line-to-line resis-
tance error
Auto-Tuning was not completed in the
specified time.
The results of Auto-Tuning has exceeded
the setting range for a parameter. • Check the input data.
• Check motor wiring.
• If the motor is connected to the
machine, disconnect it.
No-Load Current No-load current error
Rated Slip Rated slip error
Accelerate
Acceleration error
(detected only for
rotational Auto-Tun-
ing)
The motor did not accelerate in the spec-
ified time.
• Increase C1-01 (Acceleration Time 1).
• Increase L7-01 and L7-02 (Forward
and Reverse Torque Limits) if they are
low.
• If the motor is connected to the
machine, disconnect it.
PG Direction Motor direction error
The connection between the MxC and
the PG (A or B phase) or the MxC and
Motor (U,V, or W) is faulty.
• Check the PG wiring.
• Check the motor wiring.
• Compare the rotational direction of
the PG with the setting of F1-05 (PG
Rotation Selection).
Motor Speed
Motor speed error
(detected only for
Rotational Auto-Tun-
ing)
The torque reference was too high
(100%) during acceleration (for Open
Loop Vector Control only).
• 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).
I-det. Circuit
Current detection
error
The current flow exceeded the motor
rated current.
Check the current detection circuit,
motor wiring, current detector, and
installation methods.
The detected current sign was the oppo-
site of what it should be.
There is a phase fault for U, V, or W.
Leak Inductance
Leakage inductance
error Auto-Tuning was not completed in the
specified time.
Check motor wiring.
PG Open
PG Disconnection
Detected No pulse from the PG although power
was being generated. Check motor wiring, and correct the dis-
connected parts.