text: <s>[INST] Powerflex755 Fault 20 TorqPrv Spd Band One of our 755 drives keeps giving Fault 20 the TorqPrv Spd Band fault. As the system its engaging its coming down or up it slows down. We have changed the encoder cards and the brake relays which fixes the fault for a couple of days but then it faults out again. Is it necessary to switch out the entire drive completely or is there another troubleshooting step to take? thanks [/INST] Hello Sigala, Have you seen technote QA15459 There are some adjustments that can be made explained in the technote that might help. Thanks \\n </s>