Solutions for Motor Management
Get support to configure, troubleshoot, update or upgrade your motor management solution built with Altivar variable speed drives and Tesys devices to start, control, protect and monitor Low Voltage and Medium Voltage motors and loads, covering direct start, soft start and variable speed control.
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Posted: 2022-10-21 08:43 AM . Last Modified: 2023-06-09 02:54 AM
What is the difference between the motor control type SVC I and SVC V in ATV71?
When do I need to select SVC I ?
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Posted: 2022-10-25 12:39 AM
I always wondered the same thing. I think manual said something like SVC I is equal to the behaviour of the older ATV58 drives. But it does not say exactly what this "behaviour" is. As they decided to keep this "legacy" mode it has to have some positive effects too on some loads but I guess it's usage is probably very limited as SVC V was chosen as default.
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Posted: 2 weeks ago
svci is used when you have high demand load with fluctuation, if the motor doesn't have encoder feedback the vfd will manage the current to keep the motor in working as much possible in the optimum current and torque based on motor standard specs . while svcv is only used to keep frequency and voltage control of simple applications like fans , conveyors , ...
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Posted: 1 week ago
Sounds like you are referring SVC U like a scalar mode but it is not, both are vector modes. But you might be right that SVC I has advantages in demanding applications. The manual that not say anything about that, only that SVC I mimics the behaviour of older ATV58 drives.
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