Reliance Electric 57411-2F Resolver Input Module

Reliance Electric 57411-2F Resolver Input Module (also cataloged as 57C411 AutoMax Resolver Input Module) is a backplane-mounted I/O card for Baldor/Reliance AutoMax servo systems used to accept resolver feedback. It interfaces with a resolver’s SIN and COS signals, providing approximately 11.8 Vrms input on the -SIN+ and -COS+ terminals and a -TRIG+ reference connection. The module includes on‑board indicators to help verify resolver input health as part of the AutoMax backplane, supporting reliable closed‑loop motion control. Variants of this part number—0-57411-2F and 57C411—refer to the same legacy resolver input module used in Baldor-Reliance control architectures.