ABB FEN-21 Resolver Interface Quick Guide

ABB FEN-21 Resolver Interface Quick Guide

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The FEN-21 offers an interface for a resolver with PTC/KTY support and TTL encoder connection and a TTL encoder

emulation output. It also supports two digital inputs for position latching.

The FEN-21 is compatible with resolvers, which are excited by sinusoidal voltage (to the rotor winding), and which generate sine and cosine signals proportional to the rotor angle (to stator windings). Amplitude and frequency of the excitation signal can be adjusted in range 4Ö12 Vrms, 1Ö20 kHz. Transformation ratio of the resolver must be such that sine and cosine signals remains in range 2Ö7 Vrms.

ABB FEN-21 Technical drawing:

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