Sinumerik Alarm 300505 Axis %1 drive %2 measuring circuit error of absolute track, code %3

Sinumerik Alarm 300505 Axis %1 drive %2 measuring circuit error of absolute track, code %3

Parameters:
%1 = NC axis number
%2 = Drive number
%3 = Fine error coding

Definitions:
• Incremental encoder (ERN 1387)
• The absolute motor track (C/D track) is monitored for wire-breaks.
• Absolute encoder (EQN 1325)
• Monitoring of the encoder hardware and the EnDat interface
• Accurate diagnostics via error code MD 1023 $MD_ENC_ABS_DIAGNOSIS_MOTOR (diagnostics for measuring system absolute track) on motor measuring systems or MD 1033 $MD_ENC_ABS_DIAGNOSIS_DIRECT (diagnostics for direct measuring system absolute track) for direct measuring systems:
• Overview of bit nos., significance, note:
• Bit 0 Lighting failed
• Bit 1 Signal amplitude too small
• Bit 2 Code connection error
• Bit 3 Overvoltage
• Bit 4 Undervoltage
• Bit 5 Overcurrent
• Bit 6 Battery change necessary
• Bit 7 CRC error (evaluate bit 13) see below, SW 4.2 and higher, synchronous linear motor
• Bit 8 Encoder cannot be used, Assignment of absolute track to incremental track not allowed, SW 4.2 and higher, synchronous linear motor
• Bit 9 C/D track for ERN1387 encoder incorrect (see below) or EQN encoder connected
• Bit 10 Log cannot be aborted
• Bit 11 SSI level detected in data cable
• Bit 12 TIMEOUT while reading measured value
• Bit 13 CRC error
• Bit 14 Wrong IPU submodule for direct measuring signal, only with 611D expansion
• Bit 15 Encoder defective
• CRC error bit 7 and bit 13:
• Bit 7: 0, bit 13: 1 CRC error from SIDA-ASIC
• Bit 7: 1, bit 13: 0 Control check byte error
• Bit 7: 1, bit 13: 1 Error on correction of absolute track by incremental track
• Bits 12 and 15: Zero level monitoring SSI
• Bits 14 and 15: Idle level monitoring SSI
• Note on bit 9:
• Incorrect parameterization (e.g. not on EQN MD 1011: $MD_ACTUAL_VALUE_CONFIG (actual value sensing configuration IM) or MD 1030: $MD_ACTUAL_VALUE_CONFIG (actual value sensing configuration IM)
• or old hardware (not suitable for EQN)
• or no encoder connected
• or incorrect encoder cable (for ERN instead of EQN)

Reactions:
– Mode group not ready.
– Channel not ready.
– Channel not ready.
– NC Start disable in this channel.
– NC Stop on alarm.
– The NC switches to follow-up mode.
– Alarm display.
– Interface signals are set.

Remedy:
• Check encoders, encoder lines and connectors between drive motor and 611D module. Check for temporary interruptions (loose contact) caused, for example, by movements in trailing cable. If necessary, replace the motor cable.
• Incorrect cable type
• Closed-loop control module defective or not suitable for EnDat interface (e.g. closed- loop control module with EPROM)

Program Continuation:
Switch control OFF – ON.