A32411 — Encoder 2: Absolute encoder signals internal alarms

A32411 reports that the absolute encoder connected as Encoder 2 has set alarm bits in its own fault word. The drive does not detect the condition itself; it passes on what the encoder signals, and the alarm value in r2124 shows which internal encoder condition is behind the message. Depending on how the drive is configured, the same condition can also be issued as a fault or with no drive reaction at all.

• The fault word of the absolute encoder connected at Encoder 2 includes alarm bits that have been set; the drive reports the encoder's internal alarm condition.

1. Read the alarm value in r2124 and interpret it in binary as yyyyxxxx (hex): xxxx gives the fault cause, yyyy the supplementary information — the decoding below shows which internal encoder condition each bit stands for.
2. Replace the encoder. This is the only remedy the manual gives for this message.

The drive puts the fault cause in binary into the first placeholder of the message value and the supplementary information into the second. The same information is stored as the alarm value in r2124; interpreted in binary it reads yyyyxxxx (hex), where yyyy is the supplementary information and xxxx the fault cause:

• yyyy = 0
  • Bit 0: Frequency exceeded (speed too high).
  • Bit 1: Temperature exceeded.
  • Bit 2: Control reserve, lighting system exceeded.
  • Bit 3: Battery discharged.
  • Bit 4: Reference point passed.
• yyyy = 1
  • Bit 0: Signal amplitude outside the control range.
  • Bit 1: Error multiturn interface.
  • Bit 2: Internal data error (singleturn/multiturn not with single steps).
  • Bit 3: Error EEPROM interface.
  • Bit 4: SAR converter error.
  • Bit 5: Fault for the register data transfer.
  • Bit 6: Internal error identified at the error pin (nErr).
  • Bit 7: Temperature threshold exceeded or fallen below.

• r2124 — alarm value: read it in binary as yyyyxxxx (hex) to see which alarm bit the encoder has set; xxxx is the fault cause and yyyy the supplementary information.

The drive takes no automatic action on this message, and as an alarm it requires no acknowledgement — it ends once the encoder no longer reports the alarm bits. If the drive configuration issues the same condition as a fault, acknowledge it immediately.