F31160 — Encoder 1: Analog sensor channel A failed

F31160 means that the input voltage of the analog sensor connected as Encoder 1 is outside the permissible limits on channel A. The actual position or speed value derived from this encoder is therefore incorrect or no longer available, and the encoder signal is taken out of closed-loop control. Which of the limits was actually violated is stored as a numeric fault value in r0949 and must be read as a decimal number. Depending on how the drive is configured, the same condition can also be signalled as an alarm or as a message without any reaction instead of as a fault.

• The input voltage of the analog sensor is outside the permissible limits on channel A of Encoder 1.
• Depending on which limit is violated, the fault value in r0949 is 1 (voltage outside the detectable measuring range), 2 (voltage outside the measuring range set in p4673) or 3 (absolute value of the voltage above the range limit in p4676).

1. Read the fault value in r0949 as a decimal number to see which limit the drive tripped on: 1, 2 or 3.
2. For fault value 1, check the output voltage of the analog sensor.
3. For fault value 2, check the voltage setting for each encoder period in p4673.
4. For fault value 3, check the range limit setting in p4676 and increase it if necessary.
5. Once the cause has been removed, acknowledge the fault and restart the drive.

• 1: Input voltage outside detectable measuring range.
• 2: Input voltage outside the measuring range set in (p4673).
• 3: The absolute value of the input voltage has exceeded the range limit (p4676).

• r0949 — displays the fault value for F31160; read it as a decimal number to determine whether the drive tripped with 1, 2 or 3.
• p4673 — voltage of analog sensor channel A per encoder period; check this setting when the fault value is 2.
• p4676 — threshold of the analog sensor range limit; check it and increase it if necessary when the fault value is 3.

The fault is acknowledged with pulse inhibit, so the pulses must be inhibited when the acknowledgment is issued; afterwards the drive can be enabled again. If the condition has been configured as an alarm or as a message without reaction, no reaction takes place and no acknowledgment is required.