DCS Position Error

What does Position error mean?

A discrepancy in the elevator car's position was detected during the Door Check Sequence (DCS) at a specific level. This error indicates that the LCB_II control system's perceived car position does not match the actual physical position, affecting safety and sequence execution for the OTIS 2000 Controllers MCS120/MCS220.

• Faulty or misaligned position sensors (e.g., encoder, absolute position device).
• Issues with hoistway limit switches or their associated circuits.
• Incorrectly set position reference parameters.
• Slippage in the traction system affecting position feedback.

Click steps to track your progress.

1. 1

   Identify the specific level where the position error occurred from the GAA21750AK3 service tool.

2. 2

   Verify the calibration and functionality of the elevator's position sensors.

3. 3

   Inspect all hoistway limit switches for proper mechanical actuation and electrical integrity.

4. 4

   Check relevant position-related parameters for correct configuration within the service tool. Perform a hoistway learning or re-leveling sequence if applicable.