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MELSEC-Q
15 TROUBLESHOOTING
Related buffer memory address
Axis 1 Axis 2 Axis 3 Axis 4
Error
check
timing
Error
process-
ing
Check point Corrective action
Load inertia ratio
30147 30347 30547 30747
Increase acceleration/deceleration
time constant.
Acceleration time
12, 13 162, 163 312, 313 462, 463
36, 37 186, 187 336, 337 486, 487
38, 39 188, 189 338, 339 488, 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.124
load inertia
moment ratio";
or
(2) Reexamine acceleration/
deceleration time constant.
No. of pulses per rotation
2, 3 152, 153 302, 303 452, 453
Movement amount per rotation
4, 5 154, 155 304, 305 454, 455
Unit setting
1 151 301 451
Confirm whether "
Pr.2
No. of
pulses per rotation" and
"
Pr.3
Movement amount per
rotation" is applied to the machine
specification.
— — — —
Change the servomotor.
— — — —
Correct the wiring.
— — — —
Servo amplifier error (2032)
occurs if power is switched on
after disconnection of the U, V,
W phase power cables.
Change the servo amplifier.
Correct the U, V, W phase wiring of
the servo amplifier.
— — — —
Always
Imme-
date stop
Take noise suppression measures.
:
The error check timing is shown below.
• When servo amplifier is power ON.
• When the QD75MH detects the rising edge (OFF
ON) of the PLC READY signal [Y0].
• When servo amplifier is reset.
• When the QD75MH is power ON.