text: <s>[INST] 700S F129 We have two VSDs (PF 700S) that are configured for sugar centrifugals we are using here at our factory. Both applications run with and active regeneration units,(1336 R) which activate when slowing the centrifugal down after its high speed cycle. Both machines have been running well for approximately 8 months with no problems.Today for no reason one of the machines VSD stopped on a fault F [/INST] Hi, the Fault F129 *is* in the manual, page 4-11 ....:smileywink: It is just an indication that the Faults have been cleared... just check if F11 is an old indication or it maybe the cause of your stop... Anyway the Green status led just indicate the drive is ready to work ..., so right now no faults are present... :smileysurprised: Hope this helps, - fuzzy logic \\n </s>