text: <s>[INST] Setting parameter 445 on 753 Summary: Sensitive level in terms of %Good day, I wish to activate the phase loss on the 753 drive and I have a few questions 1. What is the correct setting of output phase loss level ( parameter 445) 2. The default setting is 200, and 200 is equal to what percentage of phase loss? 3. The sensitivity is based on voltage? M. Mahao [/INST] https://rockwellautomation.custhelp.com/app/answers/detail/a_id/719367/page/1 According to this knowledgebase article: F21 is Output Phase Loss, which means that the current in one or more phases has been lost or remains below the threshold set in Parameter 445 [Out PhaseLossLvl] for one second. Decreasing the threshold in Parameter 445 [Out PhaseLossLvl] will make the drive less sensitive to tripping. This is usually necessary when the motor is smaller than the drive rating. Check for an open output contactor or any loss of connection between the drive and motor. However, I'm pretty sure that the value in P445 is NOT in units of current; otherwise, why would the default value be 200? I don't think it's percentage either. However, no where I can I find a good definition or method to set this value properly. To activate output phase loss, you need to set parameter 444 to something that is useful to you (either alarm or fault). Default setting is ignore. You should be able to view the knowledgebase article; it is tagged as being for everyone. \\n </s>