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Following are a series of Frequently Asked Questions relating to servomotors including AKM and AKM-H.
Frequently Asked Questions
DBL / DBK with Encoder | Feedback has no defined commutation offset. The commutation offset is determined with the help of the servo amplifier and stored in the encoder memory. |
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AKM with Hiperface encoder | Encoder is installed arbitrarily. The commutation offset is determined with the aid of the servo amplifier and stored in the encoder memory. |
AKM with BiSS encoder | Encoder is installed arbitrarily. Commutation offset is set to zero electronically. |
AKM with EnDat encoder | Commutation offset is mechanically set to zero. |
That is an AKM72M (480V). A list of all motor numbers can be found in the Motor Database, available from the Downloads page.
No, this is forbidden. Connecting a motor directly to the main supply will destroy the motor. Refer to the chapter "Use as directed" in the instructions manual.
Yes, for the Servostar line it is possible with S300 and S700. See page Cogging Suppression for details. For AKD drive family the feature is available in firmware version 1.15 See Cogging Compensation for details.
See the Reference table.
Low rotor inertia is the source for this problem, ironless linear motors show a similar behavior.
Solution for drives with S300/S700 servo amplifiers:
Increase the bandwidth of the current control loop with the Smith Predictor (FILTMODE = 2). Refer to page Tuning: Delay Time Compensation with Smith Predictor.
The Endat protocol has been changed by Heidenhain. The firmware used in older S601...620 does not support this protocol. Please use, depending on the serial number, the following firmware version:
Ser.No. < 220.000 : Firmware version 3.76
Ser.No. > 220.000 : latest or current firmware version