16 - 110
16. INDEXER POSITIONING OPERATION
Display Name
Definition
Cause
Action
(Note 2)
Alarm
detailed
information
A30
Regenerative
error
Permissible
regenerative
power of the
built-in
regenerative
resistor or
regenerative
option is
exceeded.
1.Wrong setting of parameter No. PA02
Set correctly.
1
2. High-duty operation or continuous regenerative
operation caused the permissible regenerative
power of the regenerative option to be exceeded.
<Check method>
Check the regenerative load ratio on the status
display.
1. Reduce the frequency
of positioning.
2. Use the regenerative
option of larger
capacity.
3. Reduce the load.
3. Power supply voltage is abnormal.
200V class: 260VAC or more
100V class: More than 135VAC
400V class: 535VAC or more
Check the power supply
4. Built-in regenerative resistor or regenerative
option is not connected.
Connect correctly
4
5. Built-in regenerative resistor or regenerative
option faulty.
Change the servo
amplifier or regenerative
option.
Regenerative
transistor fault
6. Servo amplifier fault. (Regenerative transistor is
faulty.)
<Check method>
1. The regenerative option has overheated
abnormally.
2. The alarm occurs even after removal of the
built-in regenerative resistor or regenerative
option.
Change the servo
amplifier.
7. Servo amplifier fault. (Regenerative circuit fault)
Change the servo
amplifier.
2
A31
Overspeed Speed
has
exceeded the
instantaneous
permissible
speed.
1. Small acceleration/deceleration time constant
caused overshoot to be large.
Increase
acceleration/deceleration
time constant.
2. Servo system is instable to cause overshoot.
1. Re-set servo gain to
proper value.
2. If servo gain cannot be
set to proper value.
1) Reduce load inertia
moment ratio; or
2) Reexamine
acceleration/
deceleration time
constant.
3. Electronic gear ratio is large
(parameters No.PA06, PA07)
Set correctly.
4. Encoder faulty.
Change the servo motor.
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 ...