ABB inverter issues
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Our company has installed a new plunger pump. The 11-kilowatt motor is controlled by a 22-kilowatt ABB inverter. During no-load testing, everything worked fine, but when the pump was connected to the system under load, the frequency could only reach 30 hertz before dropping again. Could someone please help identify the reason for this?
Let’s take a look at the changes in current; there aren’t enough conditions to conduct an accurate analysis! Can you try running the motor without connecting an inverter?
This post was last edited and replied to by zhaohh3211 on 2011-2-24 at 19:40. Reply 2#: With the load connected, the current reading appears high; however, the current measured with a clamp meter is normal. The motor is an inverter-driven motor.
The process wasn’t described clearly: test the motor individually or conduct inspections to ensure there are no issues. If the inverter’s hardware is fine, but the internal parameters are set incorrectly, simply adjust them according to the instructions. If the parameters are confirmed to be correct, check whether there are any issues with the circuit boards in the inverter’s control system. Also, determine whether the inverter is new or used; it would be best to find identical inverter circuit boards for comparison and testing.
I don’t understand it either. To what voltage level does the inverter need to be raised in order to meet your requirements?
The parameters are set according to those of the in-use frequency converter. It’s a new frequency converter; after switching to the Wegener frequency converter, everything is working properly and the load can be handled as well.
Which series? Is it the ACS550? Could it be that the macro settings in your application aren’t set correctly?
The ACS interface is user-friendly; you can see the prompts to help you decide whether to use open-loop control or closed-loop control In open-loop mode, with the panel setting specified, it will provide protection if no load is connected; it will not reduce its frequency on its own
There must be an issue with the parameter settings.
It’s okay to use a 22KW unit for 11KW; it’s probably a setting issue on your end! Add Q787801445
First, confirm that both the motor and the inverter are in good condition. Next, check the model of the inverter you are using. Different model settings may vary slightly. It is possible to download and copy the settings of other properly functioning inverters for use.