15 - 5
MELSEC-Q
15 TROUBLESHOOTING
(c) When a motor does not rotate at the set speed
Check item
Action
[When " Md.28 Axis feedrate" indicates the set speed]
• Check that the values in "
Pr.2
No. of pulses per
rotation", "
Pr.3
Movement amount per rotation", and
"
Pr.4
Unit magnification" meet the system.
• When the drive unit has the electronic gear function,
check that the settings meet the system.
Does the value in " Md.28
Axis feedrate" indicate the set
speed?
[When " Md.28 Axis feedrate" does not indicate the set
speed]
• Check that the speed is not limited by the value in
"
Pr.8
Speed limit value".
• In the JOG operation, Check that the speed is not
limited by the value in "
Pr.31
JOG speed limit value".
• In the JOG operation, check that Forward/Reverse run
JOG start signals (Y8 to YF) do not repeatedly turn ON
and OFF.
(d) When the set position is not reached
Check item
Action
[When "
Md.20
Current feed value" reaches the set
position]
• Check that the values in "
Pr.2
No. of pulses per
rotation", "
Pr.3
Movement amount per rotation", and
"
Pr.4
Unit magnification" meet the system.
• When the drive unit has the electronic gear function,
check that the settings meet the system.
Does the value in "
Md.20
Current feed value" indicate
the intended position when
the motor stops?
[When "
Md.20
Current feed value" does not reaches
the set position]
• Check that the motor is not stopped by Axis stop signals
(Y4 to Y7) or a stop signal (STOP). If a motor is stopped
by them, the value "1: Stopped" is stored in "
Md.26
Axis operation status".
Summary of Contents for Melsec-Q QD75D1
Page 1: ......
Page 2: ......
Page 22: ...A 20 MEMO ...
Page 24: ...MEMO ...
Page 41: ...1 17 MELSEC Q 1 PRODUCT OUTLINE MEMO ...
Page 48: ...1 24 MELSEC Q 1 PRODUCT OUTLINE MEMO ...
Page 60: ...2 12 MELSEC Q 2 SYSTEM CONFIGURATION MEMO ...
Page 137: ...5 33 MELSEC Q 5 DATA USED FOR POSITIONING CONTROL MEMO ...
Page 232: ...5 128 MELSEC Q 5 DATA USED FOR POSITIONING CONTROL MEMO ...
Page 252: ...6 20 MELSEC Q 6 SEQUENCE PROGRAM USED FOR POSITIONING CONTROL ...
Page 253: ...6 21 MELSEC Q 6 SEQUENCE PROGRAM USED FOR POSITIONING CONTROL ...
Page 278: ...6 46 MELSEC Q 6 SEQUENCE PROGRAM USED FOR POSITIONING CONTROL MEMO ...
Page 292: ...MEMO ...
Page 436: ...9 120 MELSEC Q 9 MAJOR POSITIONING CONTROL MEMO ...
Page 464: ...10 28 MELSEC Q 10 HIGH LEVEL POSITIONING CONTROL MEMO ...
Page 638: ...14 24 MELSEC Q 14 DEDICATED INSTRUCTIONS MEMO ...
Page 647: ...15 9 MELSEC Q 15 TROUBLESHOOTING MEMO ...
Page 686: ...15 48 MELSEC Q 15 TROUBLESHOOTING MEMO ...
Page 839: ...Appendix 153 MELSEC Q APPENDICES 6 QD75D4N 90 23 27 4 12 98 4 46 Unit mm ...
Page 840: ...Appendix 154 MELSEC Q APPENDICES 7 QD75P1 QD75P2 QD75P4 27 4 23 98 90 4 46 unit mm ...
Page 841: ...Appendix 155 MELSEC Q APPENDICES 8 QD75D1 QD75D2 QD75D4 27 4 23 90 12 98 4 46 unit mm ...
Page 842: ...Appendix 156 MELSEC Q APPENDICES MEMO ...
Page 857: ......
Page 858: ......