Adjusting the Power Rating of ABB VFDs: A Step-by-Step Guide

Adjusting the Power Rating of ABB VFDs: A Step-by-Step Guide

When it comes to flexibility in power rating adjustments, ABB’s ACS510/ACS550/ACS350/ACS355/ACH550 Variable Frequency Drives (VFDs) offer a seamless solution. Whether you need to upgrade from a 1.1KW to a 5.5KW VFD or make any other power adjustment, these drives provide the capability to adapt to your specific requirements. This is especially beneficial in scenarios where you have a limited number of VFD main boards, like the SMIO-01C, and need to utilize them across different power ranges. Below is a detailed guide on how to access and modify the power rating parameters of these VFDs.

Accessing and Modifying Parameters

1. Open the Parameter Table:
   • Navigate to the deepest level of parameters, which may include numbers like 0102 or any other displayed values.
   • If you see 9905, for instance, hold the UP (arrow up), DOWN (arrow down), and RETURN (button next to LOC on the upper left) buttons simultaneously for 3 seconds.
   • You will observe a flash on the screen, and the top line should display “PARAMETERS+”.
2. Expand Parameter Groups:
   • Exit and re-enter the parameter groups.
   • Notice that the number of parameter groups has increased from 99 to a maximum of 120.
   • Navigate to parameter group 105.

Modifying Power Capacity

Follow these precise steps to adjust the power capacity:

1. Find and Modify Parameter 10509:
   • Change 105.09 to the desired current value.
   • Ensure the corresponding power value matches the VFD label. For example:
     • For ACS510-01-017A-4, change to 0174H.
     • For ACS510-01-031A-4, change to 0314H.
2. Set 10502 to 1 and confirm.
3. Set 10511 to 4012 and confirm.

Note: The order of these modifications is crucial. Any mistake may require you to restart the process.

Verifying Parameter Changes

• Re-enter the parameter table.
• Check if parameter 3304 (transmission capacity) reflects the correct modifications.

Important Considerations

• The process outlined above modifies the power rating on the ABB drive motherboard (SMIO-01C). It does not alter the power of the drive board itself.
• Despite the appearance of expanded power capabilities, the actual output power of the VFD remains unchanged unless the power board is also modified.
• This guide is specific to ACS510/ACS550/ACS350/ACS355/ACH550 VFDs and is not applicable to the ACS800 series.

For assistance with power modification methods for ACS800 inverters, please reach out to us directly. Our team is here to help you navigate the intricacies of VFD power adjustments and ensure your equipment operates at its optimal capacity.