170
(4) Encoder Trouble
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Display
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Description of detected alarm
】
There is a fault in the encoder built in the servo motor.
1. Et1: Single revolution position detection fault of encoder.
2. Et2: Encoder memory data reading fault.
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Causes and Solutions
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Causes
Solutions
Fault in data sent from encoder
Use shielded cables to eliminate noise effects.
Failure of encoder
Replace the servo motor.
(5) Circuit Trouble
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Display
】
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Description of detected alarm
】
There is a fault in the source control power voltage inside the servo
motor drive. There may be a failure in the internal circuit.
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Causes and Solutions
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Causes
Solutions
Failure of servo motor drive
Turn the power off then on again. If restoration is not obtained,
replace the servo motor drive.
(6) Memory Error
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Display
】
【
Description of detected alarm
】
The parameter data stored in the servo motor drive is damaged.
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Causes and Solutions
】
Causes
Solutions
Failure of stored data
• Initialize parameters and postioning data.
• If restoration is not obtained with the actions above, replace the
servo motor drive.
The parameter overwriting frequency
has exceeded 100,000 cycles.
Replace the servo amplifier.
(Store the parameters which are overwritten frequently to P2.80 to 85,
parameter in RAM 1 to 6.)