Published: 07/18/2007
| Question: | UV1 -- Fault Code Description |
| Answer: | Digital Operator Display Text:UV1 DC Bus Undervolt
Description:DC Bus Undervoltage: The DC bus voltage is less than or equal to L2-05
208-240Vac: Trip point is less than or equal to 190Vdc 480Vac: Trip point is less than or equal to 380Vdc.
Causes:Low input voltage at R/L1, S/L2 and T/L3 - - - The acceleration time is set too short
- - - Voltage fluctuation of the input power is too large
Corrective Actions:Check the input circuit and increase the input power to within specifications - - - Extend the time in C1-01 - - - Check the input voltage.
There is other related information on this FAQ, see "Link to related files" below. |
Product Information:
| Product Group: | Inverters/Drives |
| Product: | E7 Drive, E7B Drive Bypass, E7C Drive Configured, E7E Drive Engineered, E7L Drive Bypass, E7N Narrow Bypass Package, E7S Slim Configured Package, F7 Drive, P7 Drive |
| Applications: | |
| Category: | Fault Code Description |
Other Information:
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Please read and understand the product instruction manual before installing, servicing or operating Yaskawa products. FAQ content and illustrations are provided as technical advice to augment the information in manual, not superceed it. It is not possible to give detailed instructions for all types of installation or support activities. The information described in the FAQs are subject to change without notice to improve the product or FAQ. Yaskawa assumes no responsibility for errors or omissions or damages resulting from the use of the information contained in any FAQ.
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