Trouble Shooting - Drivectrl

Cosy in state Error

Symptom

• drivectrl and Cosy in state ERROR
• drivectrl and Cosy in state ARMED (when just the Tracking stopped accidently)

Solution

• DRIVECTRL/RESUME

The RESUME command will proceed the following steps (so only RESUME is necessary to solve the Drive Error):

• DRIVECTRL/STOP (now drivectrl shut be in state armed)
• DRIVECTRL/TRACK_SOURCE x y sourcename
  • last Tracking command: see output of dimctrl
  • see datatakingdetails#pointingpositions Current Pointing Positions

Not Helping

• all other

drivectrl in state ERROR

Symptom

• drivectrl in state ERROR
• sending a STOP via dim is ineffective

Solution

• go to /home/fact/operation
• restart drive control: "dimctrl —restart DRIVE_CONTROL"
• follow the command line output of drive control: "follow.sh drivectrl"

Remark

• Be patient and wait for the service to reboot !!!

drivectrl in state 3

Symptom

• drivectrl is in status LOCKED

Solution

• drivectrl goes in this status when the sun is rising, so if this "problem" occurs in the morning it is properly not a problem, it's only the way the telescope should behave, due to the rising sun
• if this problem occurs during startup, you have to unlock the telescope:
  • DRIVECTRL/UNLOCK

Not Helping

• DRIVECTRL/STOP
• killing / quiting drivectrl or cosy

Manual parking of the telescope

Symptom

• drivectrl and Cosy don't accept / react to commands, for example an error with the IndraDrives occur

Solution

• if it's not to late in the night, try to call an expert before you park manually
• Park the telescope manually:

0. Proceed all parts of the Shutdown procedure you can do in the current situation (see shutdown here)
   • be sure the bias voltage is OFF!
   • wear a helmet when going to the telescope
1. there are two bars near the door, to move the telescope in the azimuth and zenith direction:
   • long bar: zenith
   • short bar: azimuth
2. These bars, you can use for turning the telescope manually on the spots provided for this
   • azimuth: below the telecope
   • zenith: right of the mirrors
   • be aware that you don't turn in a way, that the cables get damaged
3. Turn the telescope in the Parking Position (pointing north, towards the old container)