4/3/2014 11:03 AM | |
Joined: 10/11/2006 Last visit: 9/30/2024 Posts: 5909 Rating: (805)
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Hello, in sensorless mode and at low speed control is switching in open loop mode (V/f). Unfortunately the function diagram is not the whole truth. Depending on dynamic and static torque, which are Iq components, Id is calculated. Nevertheless there is a Iq component. Due to V/f-mode at low speed p1610 and p1611 are transformed internally into an Uq component. To get a closeridea of SLVC please refer to the related chapters in Function Manual FH1: https://www.automation.siemens.com/doconweb/pdf/SINUMERIK_SINAMICS_04_2010_E/FH1.pdf?HTTPS=REDIR&p=1 chap. 4.1 p. 122ff |
With best regards, |
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