CHAPTER 7 MAINTENANCE AND INSPECTION
Troubleshooting Method
7-21
7
23. Command Pulse Frequency Error
[Display]
[Description of detected alarm]
AL.HF
-
The input frequency for pulse train input exceeds the maximum
input specification.
The output frequency for pulse train output exceeds the maximum
output specification.
2000 [MHz] or a higher frequency is detected at the inlet of the position
deviation counter inside the servo amplifier.
[Cause and remedy]
Cause
Remedy
The command pulse frequency is high.
Reduce the command pulse frequency.
The pulse reference value such as the input
electronic gear setting is high.
Change the pulse ratio setting to a correct
reference value.
The pulse train output frequency is high.
Review the output pulse division.
Set “0” (Disable) for the output pulse
frequency error (PA3_90) setting.
24. Overload 3
[Display]
[Description of detected alarm]
AL.oL3
OL3 = This is an alarm at output open-phase.
[Cause and remedy]
Cause
Remedy
The servomotor fails to rotate mechanically.
Check the wiring of power cables (U, V and
W) and correct faults.
Summary of Contents for ALPHA7
Page 1: ......
Page 3: ...ii...
Page 22: ...0 1 CHAPTER 0 INTRODUCTION 0...
Page 36: ...1 1 CHAPTER 1 INSTALLATION 1...
Page 47: ...CHAPTER 1 INSTALLATION 1 12 Servo Amplifier 1...
Page 48: ...2 1 CHAPTER 2 WIRING 2...
Page 163: ...CHAPTER 2 WIRING 2 116 Safety Function 2...
Page 164: ...3 1 CHAPTER 3 OPERATION 3...
Page 192: ...4 1 CHAPTER 4 PARAMETER 4...
Page 317: ...CHAPTER 4 PARAMETER 4 126 Extension Function 2 Setting Parameters 4...
Page 318: ...5 1 CHAPTER 5 SERVO ADJUSTMENT 5...
Page 353: ...CHAPTER 5 SERVO ADJUSTMENT 5 36 Special Adjustment Vibration Suppression 5...
Page 354: ...6 1 CHAPTER 6 KEYPAD 6...
Page 408: ...7 1 CHAPTER 7 MAINTENANCE AND INSPECTION 7...
Page 434: ...8 1 CHAPTER 8 SPECIFICATIONS 8...
Page 460: ...9 1 CHAPTER 9 CHARACTERISTICS 9...
Page 472: ...10 1 CHAPTER 10 PERIPHERAL EQUIPMENT 10...
Page 516: ...11 1 CHAPTER 11 ABSOLUTE POSITION SYSTEM 11...
Page 523: ...CHAPTER 11 ABSOLUTE POSITION SYSTEM 11 8 Calculation of Battery Life 11...
Page 524: ...12 1 CHAPTER 12 POSITIONING DATA 12...
Page 540: ...13 1 CHAPTER 13 MODBUS RTU COMMUNICATION 13...
Page 579: ...CHAPTER 13 MODBUS RTU COMMUNICATION 13 40 Communications Procedures 13...
Page 580: ...14 1 CHAPTER 14 PC LOADER 14...
Page 614: ...STANDARDS COMPLIANCE CHAPTER 15 15...
Page 628: ...CHAPTER 16 APPENDIXES 16...
Page 661: ...CHAPTER 16 APPENDIXES 34 Product Warranty 16 16 7 Product Warranty...
Page 662: ......