MDS-E/EH Series Instruction Manual
5 Servo Adjustment
280
IB-1501229-F
< HAS control >
If an output torque during acceleration/deceleration is close to the servo motor's maximum torque, the motor cannot
accelerate with a commanded time constant when the torque is saturated due to input voltage fluctuation, etc.
Generally, if an acceleration command is switched to a constant speed command, speed FB overshoots to
compensate a delay of position droop, making the machine operation unstable.
When the HAS control is enabled, a delay of position droop will be compensated by controlling the amount of speed
FB overshoot within 1% or less than maximum speed of the motor.
The controllable amount of position droop delay with HAS control HAS can be set at 1/4 or 1/2 of the excessive
error detection width.
【
#2234
】
SV034 SSF3 Servo function 3
bit 1 : has HAS control
This stabilizes the speed overshooting by torque saturation phenomenon.
0: Normal setting 1: Enable
【
#2284
】
SV084 SSF7 Servo function 7
bit F : h2c HAS control cancel amount
0: 1/4 (standard) 1: 1/2
POINT
1. During G1 drive, if HAS control is started, the compensation amount can not be compensated. Therefore, adjust the feed
speed cramp value or acceleration/deceleration time constant so that the current limit does not occur.
2. HAS control can not be used for axes in synchronous control since machine torsion may be occur.
3. Even if HAS control is enabled, adjust the acceleration/deceleration time constant so that the current limit does not
occur.
4. If setting half of error excessive encoder width to the droop compensation amount, error excessive alarm in acceleration
may occur more easily than if 1/4.
0[r/min]
0[r/min]
0[r/min]
0[r/min]
HAS control will catch up
the delay of position.
Speed feedback
1% or less than
maximum speed
Speed command
Overshoot will occur to
catch up the delay of position.
Speed command
Speed feedback
During current limit
During current limit
HAS control is disabled.
HAS control is enabled.
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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