4/30/2012 8:31 PM | |
Posts: 767 Rating: (69) |
Hello Main reason to use a SINAMICS S120 Smart Line Module (SLM) or an Active Line Module (ALM) in a servo motor drive system is that both of these are infeed sections (line module)which can provide tranformation of 3 phase input supply power to a dc common bus voltage level for one or multiple servo drives. In addition, both the SLM and the ALM can return regenerative energy to the supply system. The other type of line module is a Basic Line Module (BLM), which can not return regenerative energy to the supply system. With a BLM any regenerative energy from overhauling load needs to be dissipated in a braking controller and braking resistor. Concerning why to choose between BLM, SLM,and ALM following are basic differences. Basic Line Module (BLM) - Provides a dc bus voltage which is unregulated at approximately 1.35 * input voltage (i.e. as input voltage increases or decreases then dc bus voltage will change linearly) Regenerative energy must be dissipated in an external braking controller and braking resistor. Smart Line Module (SLM) - Provides a dc bus voltage which is unregulated at approximately 1.35 * input voltage (i.e. as input voltage increases or decreases then dc bus voltage will change linearly) Regenerative energy can be returned to supply. Active Line Module (ALM) - When operated in Active Mode can supply a regulated dc bus voltage to multiple drives at approximately 1.5 * input voltage level. Regenerative energy can be reurned to supply. Active Line Modules draw a virtually sinusoidal current from the supply system, which limits and harmful harmonics. - Main practical advantage to a customer for a regulated and higher dc bus voltage is to be able to achieve higher speeds/torque outputon servo motors along with more precise control ofboth speed and positioning even when supply system input voltage changes. Please refer to attachment for Drive System Properties which comes from SIZER Selector forSiemens Drives Help Menu. AttachmentAdd Drive System.pdf (1666 Downloads) |
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6/7/2019 2:25 AM | |
Joined: 4/24/2012 Last visit: 5/29/2024 Posts: 5 Rating: (2) |
Here attached is an extract from the " S120 Chassis power units Equipment Manual" with explainations and block diagrams , which may be very helpful to learn the differences between Basic, Smart and Active Line Modules. Regards AttachmentChassis power units - Line Modules.pdf (749 Downloads) |
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6/12/2019 12:10 AM | |
Joined: 4/24/2012 Last visit: 5/29/2024 Posts: 5 Rating: (2) |
Hi, Just in case you're still interested, you can get a more in-depth knowledge about different types of INFEED LINE MODULES reading through the attached extract from the "SINAMICS Engineering Manual", and comparing the tables at the end of that document . Regards AttachmentFratto.zip (564 Downloads) |
Last edited by: fratto at: 06/12/2019 00:12:28Last edited by: fratto at: 06/12/2019 00:53:34Last edited by: fratto at: 06/12/2019 00:54:32Last edited by: The Helping Hand at: 06/26/2019 12:28:22Zipped attachments |
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10/29/2019 12:27 AM | |
Joined: 4/24/2012 Last visit: 5/29/2024 Posts: 5 Rating: (2) |
Here attached is a presentation by SIEMENS explaning some very basic concepts about conversion types used in regenerative infeed units, such as : F3E ( Fundamental Frecuency Front End ) a.k.a. "Smart Line Modules" and AFE ( Active Front Ends ) a.k.a. "Active Line Modules " Thought some of you may appreciate it, Regards! AttachmentBasics_of_AC_Drives.pdf (621 Downloads) |
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