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99

IPOS Ramp Calculation Error

SEW Eurodrive · MOVIDRIVE compact System (MCF/MCV/MCS4_A)

What does 99 mean?

Immediate switch-off in IPOS operating mode if the positioning ramp is configured as sinusoidal or square, and an attempt is made to change ramp times or traveling velocities while the inverter is already enabled. These parameters cannot be modified dynamically with these specific ramp types during active operation.

Common Causes

  • Error in the IPOS ramp generation or calculation module.
  • Invalid input parameters for acceleration/deceleration ramps in IPOS.
  • Mathematical error during ramp profile computation.
  • IPOS application trying to set impossible ramp profiles.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Rewrite the IPOS plus® program logic to ensure that ramp times and traveling velocities are only altered when the inverter is inhibited (not enabled).

Browse all codes in this manual (78)
Verified technical data. Last updated: April 2026

Related Faults

00No error0000No error0010Illegal parameter index
Source: SEW Eurodrive MOVIDRIVE compact System (MCF/MCV/MCS4_A)
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