4/28/2015 8:31 PM | |
Joined: 3/10/2015 Last visit: 4/8/2022 Posts: 1 Rating: (0) |
Hello, I have installed on a water treatment plant a 3R44 Soft Starter to start a water pump. However, after only 5 hours working this drive sends me a warning "Prewarning limit motor built-up". Here follows the motor plate data: I: 275A / V:460V Delta / 184kW / 0.88 cos Fi / 1788rpm As limits I have put: Low current limit: 18.75% Upper current limit: 150.00% Tripping Class: Class 10 Idle time: 0 Motor heating: 90% Remaining time for tripping: 0 There is no temperature sensor. The last time I have checked the motor actual values, was as follows: P: 179~180kW / Ir: 266A / Is: 274A / It 268A Motor built-up temperature: 90%, showing the prewarning temperature message. For me, the motor currents are normal, and in this case I shouldn't have been receiving the prewarning messages. Anyone has an idea? Thanks
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Last edited by: Min_Moderator at: 4/29/2015 4:08:48 PM |
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