Siemens 311711 fault code meaning
Siemens / 311711
Series: SIMODRIVE 611D
Motor measuring system SSI telegram length invalid
servo drive
Meaning: The configuration of the motor measuring system for an SSI encoder is incorrect: MD 5028 $MD_NO_TRANSMISSION_BITS (SSI frame length) is smaller than the number of all parameterized bits in MD 5021 $MD_ENC_ABS_TURNS_MOTOR (multiturn), MD 5022 $MD_ENC_ABS_RESOL_MOTOR (singleturn) and MD 5027 $MD_ENC_CONFIG bit 14 (alarm bit) and MD 5027 $MD_ENC_CONFIG bit 12 (parity bit).
Possible causes
Source: SINUMERIK 840D/840Di/810D Diagnostics Manual 11/2006 (EN, Siemens official site) 2.3 SIMODRIVE ALARMS