MDS-E/EH Series Instruction Manual
6 Spindle Adjustment
329
IB-1501229-F
(2) Measuring the acceleration/deceleration waveforms
Measure the speed feedback and current feedback output by setting the monitor output data on "Time-series data
measurement" with NC Analyzer, and check if theoretical acceleration/deceleration time is within ±15%. Refer to
"NC Analyzer Instruction Manual (IB-1501086)" for details on setting the monitor output data.
When acceleration/deceleration time does not match the theoretical value (an error rate 15% or more), check the
following items.
[1] There may be an error in calculating load inertia for the motor axis conversion used when calculating the
theoretical acceleration/deceleration time. Check the load inertia again.
[2] When acceleration time is long and deceleration time is short, friction torque is thought to be large. Check load
meter value at the maximum speed (spindle monitor screen). If the load is 10% or more, friction torque is
thought to be relatively large. Mechanical friction, such as bearing friction or timing belt friction, is assumed to
be large. Measure the acceleration/deceleration time again following trial run.
[3] Even if the problems above are not found, when acceleration/deceleration time does not match, there may be
a possibility of using spindle motor and spindle drive unit that are not specified, or using wrong parameters.
Check the spindle motor type and spindle drive unit type again, as well as the spindle parameter settings.
POINT
There are cases where acceleration/deceleration waveforms change depending on the spindle temperature.
Check the waveforms when the spindle temperature is high (after continuous operation) and when it is low.
CAUTION
Vibration or sudden acceleration/deceleration may occur during adjustment. When performing measurement with a
workpiece or tool installed, pay careful attention for the safety during adjustment.
Current feedback
Speed feedback
Acceleration
time:ta
Deceleration
time:td
Acceleration/deceleration characteristics of spindle motor
Measure the time from current rise
to current fall.
Summary of Contents for MDS-E
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Page 32: ...1 IB 1501229 F 1 Installation ...
Page 76: ...45 IB 1501229 F 2 Wiring and Connection ...
Page 132: ...101 IB 1501229 F 3 Safety Function ...
Page 142: ...111 IB 1501229 F 4 Setup ...
Page 277: ...MDS E EH Series Instruction Manual 4 Setup 246 IB 1501229 F ...
Page 278: ...247 IB 1501229 F 5 Servo Adjustment ...
Page 351: ...MDS E EH Series Instruction Manual 5 Servo Adjustment 320 IB 1501229 F ...
Page 352: ...321 IB 1501229 F 6 Spindle Adjustment ...
Page 404: ...373 IB 1501229 F 7 Troubleshooting ...
Page 455: ...MDS E EH Series Instruction Manual 7 Troubleshooting 424 IB 1501229 F ...
Page 456: ...425 IB 1501229 F 8 Maintenance ...
Page 475: ...MDS E EH Series Instruction Manual 8 Maintenance 444 IB 1501229 F ...
Page 476: ...445 IB 1501229 F 9 Power Backup System ...
Page 494: ...463 IB 1501229 F 10 Appx 1 Cable and Connector Assembly ...
Page 504: ...473 IB 1501229 F 11 Appx 2 D A Output Specifications for Drive Unit ...
Page 514: ...483 IB 1501229 F 12 Appx 3 Protection Function ...
Page 523: ...MDS E EH Series Instruction Manual 12 Appx 3 Protection Function 492 IB 1501229 F ...
Page 524: ...493 IB 1501229 F 13 Appx 4 Compliance to EC Directives ...
Page 528: ...497 IB 1501229 F 14 Appx 5 EMC Installation Guidelines ...
Page 540: ...509 IB 1501229 F 15 Appx 6 Higher Harmonic Suppression Measure Guidelines ...
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