Mitsubishi Electric QD75MH1 User Manual page 698

15 TROUBLESHOOTING
Related buffer memory
address
Axis 1 Axis 2 Axis 3 Axis 4
78 228 378 528
74 224 374 524
75 225 375 525
74 224 374 524
75 225 375 525
74 224 374 524
75 225 375 525
79 229 379 529
80 230 380 530
81 231 381 531
74 224 374 524
75 225 375 525
1500 1600 1700 1800
1500 1600 1700 1800
— — — —
— — — —
— — — —
— — — —
— — — —
Set range
(Setting with PLC program)
<OPR retry>
0, 1
<OPR speed>
1 to 50000000 [PLS/s]
1 to 2000000000 [mm/min or others]
<OPR dwell time>
0 to 65535
<Movement amount setting after
near-point dog ON>
0 to 2147483647
<OPR speed>
1 to 50000000 [PLS/s]
1 to 2000000000 [mm/min]
<Positioning start No.>
1 to 600
7000 to 7004
9001 to 9004
<Positioning start No.>
1 to 600
7000 to 7004
9001 to 9004
—
—
—
—
—
• Validate the home position return (OPR) retry function
(set value: 1). (Refer to Section 12.2.1)
• Move the workpiece from the current position (on
home position (OP) ) using the manual control
operation (refer to chapter 11), then carry out an
original position return again.
• Lower the home position return (OPR) speed.
• Increase the dog signal input time.
(Refer to Section 8.2.3)
• Lower the home position return (OPR) speed.
• Input external zero signals during the movement at a
creep speed.
(Refer to Section 8.2.5)
• Lower the home position return (OPR) speed.
• Increase the OPR dwell time.
(Refer to Section 8.2.4)
• Calculate the movement distance using a speed limit,
home position return (OPR) speed, and deceleration
time, and set the movement amount after near-point
dog ON so that the distance becomes a deceleration
distance or longer.
• Lower the home position return (OPR) speed.
• Adjust the near-point dog position so that the
movement amount after near-point dog ON becomes
longer. (Refer to Section 8.2.4, 8.2.5)
Execute the machine home position return (OPR)
(positioning start No. 9001). (Refer to Section 8.2)
Start the machine home position return (OPR)
(positioning start No. 9001) again. (Refer to Section
8.2)
Turn the motor more than one revolution using JOG or
positioning operation.
Execute the home position return (OPR) again.
Execute the home position return (OPR) again.
• Review the wiring. (Refer to Section 12.6)
• Review the PLC program.
• Review the wiring. (Refer to Section 12.6)
• Review the PLC program.
• Review the dedicated instruction parameters.
(Refer to Section 14.3)
15 - 9
MELSEC-Q
Remedy