Altivar 31 pump control, current surging

[Anonymous user]

I got to work with an Altivar 31 model ATV31HU75M3X, supposed to contol a booster pump in a high-rise building, as a backup/make-up pump. It has a pressure transducer 4 - 20 mA connected to AI3, reading imho around 11mA. Its supplied by a 3ph 220V protected by a time-delay 30A fuses ( I know its not the best or optimal, but it just is, there).

The motor is 10HP 230/460V 3500rpm capable of 23A @ 230V. However, when the 'run forward' signal is given, drives is surging 35A currents and the motor (uncoupled) is crawling, easily spinned by hand, otherwise. I used the SoMove to get the parameter file out and took a picture of the AI3 input to make sure its sending valid signal. In the config I intentionally lowered some values, so that the fuses do not blow.

The intention is to control the motor based on the pressure reference (ultimately reversed logic: CrL3=20, CrH3=4).

My question is, can I get help with the parameters, please?

Thank you,

[BJacqz · Accepted solution]

Despite this is an old request, let me give some explanation. First point is to ensure the motor name plate has been well set in the drive settings (I means motor data such as power (or cos phi), speed, current,...) as indicated in the user's manual (see document joined). Another possibility is to share the soMove configuration file in your post, that would be helpful for analysis. In addition, electrical drawings of your installation would be helpfull too.