Siemens 504 fault code meaning

Series: SIMODRIVE 611U

Measuring circuit error (motor measuring system)

servo drive

Meaning: The encoder signal level is too low, faulted (incorrect shielding), or the cable breakage monitoring function has responded. After separately shutting down the supply voltage at the drive, for SIMODRIVE 611 universal HRS with 1Vpp encoder or SIMODRIVE universalE HRS with 1Vpp encoder, this fault message can be output during the shutdown procedure without any significance for the control.

Possible causes

Source: SIMODRIVE 611 universal Function Manual FBU 05/2010 (EN, Siemens official site) 7.3