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MELSEC-Q
15 TROUBLESHOOTING
Related buffer memory address
Axis 1 Axis 2 Axis 3 Axis 4
Check point Corrective action
Load inertia ratio
30112 30212 30312 30412
Increase acceleration/ deceleration time constant.
Acceleration time
12, 13 162, 163 312, 313 462, 463
36, 37 186, 187 386, 387 486, 487
38, 39 188, 189 338, 389 488, 489
40, 41 190, 191 340, 341 490, 491
Deceleration time
14, 15 164, 165 314, 315 464, 465
42, 43 192, 193 342, 343 492, 493
44, 45 194, 195 344, 345 494, 495
46, 47 196, 197 346, 347 496, 497
• Reset servo gain to proper value.
• If servo gain cannot be set to proper value:
(1) Reduce "
Pr.112
load inertia moment ratio";
or
(2) Reexamine acceleration/ deceleration time
constant.
— — — —
Change servomotor.
— — — —
Correct the U, V, W phase wiring of the servo
amplifier.
— — — —
Alarm (A.32) occurs if power is
switched on after disconnection
of the CNP2 connector.
Change the servo amplifier.
Correct the U, V, W phase wiring of the servo
amplifier.
— — — —
Take noise suppression measures.
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