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16. INDEXER POSITIONING OPERATION
Display Name Definition
Cause
Action
(Note 2)
Alarm
detailed
information
A10 Undervoltage Power
supply
voltage
dropped.
1. Power supply voltage is low.
<Check method>
Check that the power supply voltage is the following
value or more.
200V class: 160VAC
100V class: 83VAC
400V class: 280VAC
Check the power
supply.
2
2. Shortage of power supply capacity caused the
power supply voltage to drop at start, etc.
<Check method>
Check that the bus voltage is the following value or
more.
200V class: 200VDC
100V class: 158VDC
400V class: 380VDC
3. The bus voltage dropped to the following value or
less.
200V class: 200VDC
100V class: 158VDC
400V class: 380VDC
4. There was an instantaneous control circuit power
failure of 60ms or longer.
1
5. Faulty parts in the servo amplifier.
<Check method>
1. The alarm occurs even if the is switched on after
disconnection of all cables except the control
circuit power supply cables.
2. Check that the bus voltage is the following value or
more.
200V class: 200VDC
100V class: 158VDC
400V class: 380VDC
Change the servo
amplifier.
6. The power supply voltage is distorted.
When power impedance is high, the waveform of
power supply voltage may be distorted due to the
power regeneration current and recognized as
undervoltage.
1. Set parameter
No.PC27 to "0001".
2. Review the power
supply.
A12
Memory error 1
(RAM)
RAM memory
fault
Faulty parts in the servo amplifier.
<Check method>
The alarm occurs even if the power is switched on
after disconnection of all cables except the control
circuit power supply cables.
Change the servo
amplifier.
A13
Clock error
Printed board
fault
A15
Memory error 2
(EEP-ROM)
EEP-ROM
fault
1. Faulty parts in the servo amplifier.
<Check method>
The alarm occurs even if the power is switched on
after disconnection of all cables except the control
circuit power supply cable.
Change the servo
amplifier.
2. The number of write times to EEP-ROM exceeded
100,000.
3. The multi-revolution data, which is saved as a home
position, read from EEP-ROM is abnormal.
Execute a home
position setting.
8
Summary of Contents for Melservo-J3 Series MR-J3-B
Page 19: ...10 MEMO ...
Page 55: ...1 36 1 FUNCTIONS AND CONFIGURATION MEMO ...
Page 61: ...2 6 2 INSTALLATION MEMO ...
Page 179: ...4 58 4 SIGNALS AND WIRING MEMO ...
Page 241: ...5 62 5 OPERATION MEMO ...
Page 357: ...10 16 10 SPECIAL ADJUSTMENT FUNCTIONS MEMO ...
Page 385: ...11 28 11 TROUBLESHOOTING MEMO ...
Page 397: ...12 12 12 OUTLINE DRAWINGS MEMO ...
Page 755: ...17 70 17 SPEED CONTROL OPERATION MEMO ...
Page 793: ...App 38 APPENDIX MEMO ...
Page 799: ...MEMO ...