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ErrorLib — Industrial Fault Code Library

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AF88

Season configuration warning

ABB · ACS580

What does AF88 mean?

The drive's season configuration for scheduled operations contains an error where a season is set to start before a previous one. This logical inconsistency will prevent proper execution of time-based functions, potentially causing the system to operate outside of desired schedules.

Common Causes

  • Incorrect date and time entry for a season's start or end, creating an overlap or inversion of seasonal periods in the P96.xx or P97.xx parameter groups.
  • Manual programming error during setup of multiple season configurations, leading to a logical conflict where a season's start date is after its end date or overlaps with another season.
  • Time zone setting (P96.01) or daylight saving configuration (P96.02) not correctly accounted for when defining season start/end times, causing apparent overlaps.
  • Software bug or data corruption in the drive's non-volatile memory affecting the stored season configuration parameters.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    1. Access the drive's season configuration parameters, typically in parameter groups P96.xx (Time & Date) and P97.xx (Season settings).

  2. 2

    2. Review the Start Date and End Date parameters for each configured season (e.g., P97.01-P97.04 for Season 1 Start/End, P97.05-P97.08 for Season 2 Start/End).

  3. 3

    3. Correct any overlapping or inverted date ranges where a season's start date is prior to the end date of a preceding season, or a season's start is after its own end date.

  4. 4

    4. Verify the current drive time and date (P96.03, P96.04) and ensure the time zone (P96.01) and daylight saving (P96.02) settings are accurate for the locale.

  5. 5

    5. Re-apply the corrected season parameters and monitor the drive for recurrence of the warning.

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Verified technical data. Last updated: April 2026

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Source: ABB ACS580
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