Auto-Tuning Fault Detection; Auto-Tuning Fault Detection; Auto-Tuning Codes, Causes, And Possible Solutions - YASKAWA FSDrive-MV1000 Instructions Manual

5.7

Auto-Tuning Fault Detection

◆ Auto-Tuning Codes, Causes, and Possible Solutions

The Auto-Tuning faults are shown below. When the following faults are detected, the fault is displayed on the digital
operator and the motor coasts to a stop. Auto-Tuning faults do not trigger a sequence terminal set for fault or alarm
output.
An End error (where
discrepancy in the calculations the drive made. If there is found to be no problem on checking the cause, use the tuning
value as it stands. If there is judged to be a problem, implement countermeasures and then perform Auto-Tuning again, or
set (input) the motor parameters manually.
Digital Operator Display
End1
Cause
The torque reference exceeded 20% during
Auto-Tuning.
The results from Auto-Tuning the no-load
current exceeded 80%.
Digital Operator Display
End2
Cause
Motor data or data entered during Auto-
Tuning was incorrect.
Results from Auto-Tuning are outside the
parameter setting range, assigning the iron-
core saturation coefficient (E2-07, E2-08) a
temporary value.
Digital Operator Display
End3
Cause
The correct current rating printed on the
nameplate was not entered into T1-04.
Digital Operator Display
End4
Cause
In Stationary Auto-Tuning, the slip value
resulted in 0.2 Hz or less.
The slip that was calculated is outside the
allowable range.
The value after the compensation in E2-08
(Motor Iron-Core Saturation Coefficient 2)
exceeds the upper and lower limits.
The measured value of secondary resistance is
negative.
Digital Operator Display
End5
Cause
The resistance value that was calculated is
outside the allowable range.
YASKAWA ELECTRIC EZZ010928 FSDrive-MV1000 Instructions
is a numeric character) indicates that although Auto-Tuning has been completed, there is some
Table 5.16 Auto-Tuning Codes, Causes, and Possible Solutions
Excessive V/f Setting (detected only during Rotational Auto-Tuning, and displayed after
Auto-Tuning is complete)
• Before Auto-Tuning the drive, verify the information written on the motor nameplate and
enter that data to T1-03 through T1-05.
• Enter proper information to parameters T1-03 to T1-05 and repeat Auto-Tuning.
• If possible, disconnect the motor from the load and perform Auto-Tuning. If the load
cannot be uncoupled, simply use the Auto-Tuning results as they are.
Motor Iron Core Saturation Coefficient Error (detected only during Rotational Auto-
Tuning and displayed after Auto-Tuning is complete)
Make sure the data entered to the T1 parameters match the information written on the
motor nameplate.
⇒Enter the correct information and restart Auto-Tuning.
⇒Check and correct faulty motor wiring.
⇒Disconnect the motor from machine and perform Rotational Auto-Tuning.
Rated Current Setting Alarm (displayed after Auto-Tuning is complete)
Check the setting of parameter T1-04.
⇒Check the motor data and repeat Auto-Tuning.
Adjusted Slip Calculation Error
⇒Check the value input for T1-
⇒Execute Rotational Auto-Tuning instead.
Resistance Tuning Error
⇒Double check the data that was entered for the Auto-Tuning process.

5.7 Auto-Tuning Fault Detection

Error Name
Possible Solution
Error Name
Possible Solution
Error Name
Possible Solution
Error Name
Possible Solution
.
Error Name
Possible Solution
5
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