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CHAPTER 7 MAINTENANCE AND INSPECTION
Troubleshooting Method
7-17
7
15. External Regenerative Resistor Overheat
[Display]
[Description of detected alarm]
AL.rH2
The external regenerative resistor overheat signal (normally closed
contact signal) is turned off.
[Cause and remedy]
Cause
Remedy
Excessive source voltage
(immediately after power-on)
Check if the source voltage is within the specification limits.
Due to vertical transfer or
winding purpose, etc. the
regenerative, power cannot be
consumed.
Increase the deceleration time.
Decrease the servomotor rotation speed.
Increase the cycle time and decrease the operation frequency.
Connect an external regenerative resistor.
Install a counterweight.
Wrong wiring of external
regenerative resistor overheat
signal
Connect correctly.
16. Braking Transistor Error
[Display]
[Description of detected alarm]
AL.rH3
The regeneration handling transistor built in the servo amplifier is
damaged.
[Cause and remedy]
Cause
Remedy
The braking transistor is short
circuited or damaged.
Turn the power off then on again. If the alarm persists,
replace the servo amplifier.
If the braking transistor is short circuited or damaged, fire may be caused. If the braking
transistor fault alarm signal is output, turn the power off immediately.
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: ......