A33915 — Encoder 3: Configuration error

The drive raises this message because the configuration for encoder 3 is incorrect. Which configuration problem was actually detected is reported as an alarm value in r2124, which the manual says to interpret as a decimal number. Depending on how the drive is configured, the same condition can also be output as a fault or with no reaction, and the reaction and acknowledgement then differ accordingly.

• The configuration for encoder 3 is incorrect; the specific configuration problem is given as the alarm value in r2124 (decoded in the message value section below).
• The manual for S120/S150 additionally lists two telegram-related alarm values (2 and 3) alongside 1 and 419; the manual for G130/G150 names only the values 1 and 419.

1. Read the alarm value in r2124 as a decimal number to identify which configuration problem the drive has detected.
2. Alarm value 1: do not re-parameterize encoder 3 between a fault and an alarm — the drive does not permit re-parameterization at that point.
3. Alarm value 419: if the complete multiturn range is not required, reduce the fine resolution set in p0419, or deactivate the monitoring via p0437.25.

• The drive puts the alarm value from r2124 into the message value; interpret it as a decimal number.
• 1 — Re-parameterization between fault/alarm is not permissible.
• 2 — The cyclic DQ receive telegram is too long and is limited.
• 3 — The cyclic DQ send telegram is too long and is limited.
• 419 — When the fine resolution Gx_XIST2 is configured, the encoder identifies a maximum possible absolute position actual value (r0483) that can no longer be represented within 32 bits.
• The alarm values 2 and 3 are described in the S120/S150 manual; the G130/G150 manual gives only the values 1 and 419.

• r2124 (Alarm value): read here, as a decimal number, to see which configuration problem encoder 3 has.
• r0483 (CO: Encoder actual position value Gn_XIST2): with alarm value 419 this is the maximum possible absolute position actual value that can no longer be represented within 32 bits.
• p0419 (Fine resolution absolute value Gx_XIST2, in bits): for alarm value 419, reduce the fine resolution here.
• p0437 (Sensor Module configuration extended): for alarm value 419, deactivate the monitoring via p0437.25 if the complete multiturn range is not required.

As an alarm, A33915 does not have to be acknowledged. If the drive is instead configured to raise this condition as a fault, the fault must be acknowledged before the drive can restart, and it can be acknowledged immediately once the configuration has been corrected; for the variant output with no reaction, no acknowledgement applies either.