AuxTel Mount Control System Fails to Enable / E-Stop is Engaged

Overview

When attempting to enable ATCS from the ATScriptQueue with the script auxtel/enable_atcs.py, ATMCS goes into FAULT failing to transition to ENABLED.

Error diagnosis

ATMCS goes to FAULT and does not enable with the rest of ATCS when running the SAL script auxtel/enable_atcs.py.

Traceback for auxtel/enable_atcs.py
Fault event in ATMCS while in enable state (port).
Nasmyth 1 drive fault bit is ON.
../../../_images/AT_e-stop_is_engaged-traceback.png

Full traceback error received in LOVE

Procedure Steps

First step is to check if the E-stop is engaged. If it is engaged, release it using the procedure linked in step 2 and attempt to enable ATCS again.

  1. The only way to check if the E-stop is engaged is from the ATMCS EUI. The ATMCS EUI can be opened from a remote desktop connection or from the control computer at the first floor of the AuxTel dome. More detailed instruction in the access ATMCS EUI procedure.

    ../../../_images/EUI-ATMCS1.png

    ATMCS EUI

  2. Open the LSST Auxiliary Telescope MCS & Pneumatics window and under Mount tab, the Emergency Stop indicator will be red and reading E-stop, if the E-stop is engaged.

    ../../../_images/eui-estop-display.png

    Emergency Stop indicator

  3. Proceed to release the E-stop following the instructions in E-Stop disengage procedure.

  4. Confirm it is released, and re-run SAL script auxtel/enable_atcs.py from LOVE.