Siemens SINUMERIK 840D sl Series Diagnostics Manual page 834

Overview of Alarms
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.
- The NC switches to follow-up mode.
- Channel not ready.
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
- Channel not ready.
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SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
© Siemens AG, 2005. All rights reserved
08/2005