7.7 Auto-Tuning Errors
304 SIEPYEUOQ2A01G AC Drive Q2A Technical Manual
Code Name Causes Possible Solutions
Er-17 Reverse Prohibited Error
b1-04 = 1 [Reverse Operation Selection = Reverse
disabled] has been set.
Note:
You cannot do Inertia Tuning if the drive cannot
rotate the motor in reverse.
1. Enable reverse in the target machine.
2. Set b1-04 = 0 [Reverse enabled].
3. Do Inertia Tuning again.
Code Name Causes Possible Solutions
Er-18 Back EMF Error
The result of the induced voltage tuning was not in
the applicable range.
1. Make sure that the input motor nameplate data is correct.
2. Do Auto-Tuning again and correctly set the motor nameplate
data.
Code Name Causes Possible Solutions
Er-19 PM Inductance Error
The Auto-Tuning results of the PM motor
inductance were not in the applicable range.
1. Make sure that the input motor nameplate data is correct.
2. Do Auto-Tuning again and correctly set the motor nameplate
data.
Code Name Causes Possible Solutions
Er-20 Stator Resistance Error
The Auto-Tuning results of the PM Motor Stator
Resistance were not in the applicable range.
1. Make sure that the input motor nameplate data is correct.
2. Do Auto-Tuning again and correctly set the motor nameplate
data.
Code Name Causes Possible Solutions
Er-21 Z Pulse Correction Error
The motor is wired incorrectly.
The encoder is wired incorrectly.
1. Repair motor and encoder wiring errors.
2. Do Z Pulse Offset Tuning again.
Auto-Tuning was performed when the motor was
coasting.
1. Make sure that the motor has stopped completely.
2. Do Z Pulse Offset Tuning again.
The setting for the direction of the encoder motor
rotation is incorrect.
1. Set the direction of motor rotation of the encoder in F1-05
[Enc1 Rotat Selection] correctly.
2. Do Z Pulse Offset Tuning again.
The number of encoder pulses is incorrect. 1. Set the number of encoder pulses in F1-01 [Enc1 Pulse
Count (PPR)] correctly.
2. Do Z Pulse Offset Tuning again.
The encoder is damaged. • Examine the signal output from the encoder.
• Replace the encoder.
Code Name Causes Possible Solutions
Er-25 HighFreq Inject Param Tuning Err
The motor data is incorrect. Do Stationary Auto-Tuning again.
Note:
If the drive detects Er-25 after doing Stationary Auto-Tuning,
the motor may not be able to use high frequency injection
control. For details, contact the manufacturer or your nearest
sales representative.
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