CHAPTER 7 MAINTENANCE AND INSPECTION
7-6
Troubleshooting Method
7
7.3 Troubleshooting Method
1. Overcurrent
[Display]
[Description of detected alarm]
[Cause and remedy]
Cause Remedy
Wrong servomotor output wiring
Short circuit or grounding fault in
servomotor output wiring
Correct the wiring of power cables (U, V and W).
Check cables visually or through continuity check
and replace the defective cable.
Servomotor insulation fault
Measure the insulation resistance. (Several M
Ω
or
over to ground)
Failure of servomotor
Measure the resistance across cables. (Several
Ω
between cables)
Incorrect resistance of braking resistor
Replace with the braking resistor within the rating.
Current imbalance caused by an encoder
fault
Replace the servomotor.
Unconnected grounding cable
Connect the grounding cable.
2. Overspeed
[Display]
[Description of detected alarm]
[Cause and remedy]
Cause Remedy
Wrong servomotor output
wiring
Correct the wiring of power cables (U, V and W).
The rotation speed of the
servomotor overshoots.
Check the speed waveform during acceleration with the PC
Loader or similar (see the figure below) and take the following
countermeasures.
Increase PA1_37 (acceleration time).
Increase PA1_52 (S-curve time constant).
Increase PA1_56 (speed loop gain 1).
The output current of the servo amplifier exceeds the rated value.
OC1:
Direct detection by internal transistor of servo amplifier
OC2:
Indirect detection with software of servo amplifier
The rotation speed of the servomotor exceeds 1.1 times the maximum
speed.
最高回転速度
時間
オーバーシュート
Max. rotation speed
Overshoot
Time
Summary of Contents for ALPHA 5 RYT-SX
Page 1: ...MEHT301a FUJI SERVO SYSTEM USER S MANUAL RYT SX type ...
Page 19: ...0 1 CHAPTER 0 INTRODUCTION 0 ...
Page 34: ...CHAPTER 0 INTRODUCTION 0 16 Combination between Servomotor and Servo Amplifier 0 ...
Page 35: ...1 1 CHAPTER 1 INSTALLATION 1 ...
Page 45: ...2 1 CHAPTER 2 WIRING 2 ...
Page 142: ...CHAPTER 2 WIRING 2 98 Description of I O Signals 2 ...
Page 143: ...3 1 CHAPTER 3 OPERATION 3 ...
Page 197: ...4 1 CHAPTER 4 PARAMETER 4 ...
Page 296: ...CHAPTER 4 PARAMETER 4 100 Output Terminal Function Setting Parameters 4 ...
Page 297: ...5 1 CHAPTER 5 SERVO ADJUSTMENT 5 ...
Page 329: ...6 1 CHAPTER 6 KEYPAD 6 ...
Page 371: ...7 1 CHAPTER 7 MAINTENANCE AND INSPECTION 7 ...
Page 389: ...8 1 CHAPTER 8 SPECIFICATIONS 8 ...
Page 414: ...CHAPTER 8 SPECIFICATIONS 8 26 Dimensions of Servo Amplifier 8 ...
Page 415: ...9 1 CHAPTER 9 CHARACTERISTICS 9 ...
Page 425: ...10 1 CHAPTER 10 PERIPHERAL EQUIPMENT 10 ...
Page 463: ...11 1 CHAPTER 11 ABSOLUTE POSITION SYSTEM 11 ...
Page 473: ...12 1 CHAPTER 12 POSITIONING DATA 12 ...
Page 482: ...CHAPTER 12 POSITIONING DATA 12 10 Response Time 12 ...
Page 483: ...13 1 CHAPTER 13 PC LOADER 13 ...
Page 513: ...14 1 CHAPTER 14 APPENDIXES 14 ...
Page 545: ...CHAPTER 14 APPENDIXES Service Network 14 33 14 14 8 Service Network ...
Page 546: ...CHAPTER 14 APPENDIXES 14 34 Service Network 14 ...