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Cinebot Max Won't Re-Engage After a Power Outage — Arm Dropped Position

Summary

Studio power failed mid-shoot on a Cinebot Max. After power returned, the robot would not re-engage: motors could be heard trying to engage, then Flair reported a safety fault. A full shutdown/reset of the network did not help, and only the Track axis alone could be enabled without the rest of the robot. The root cause was that the arm had physically dropped position while unpowered during the outage — the fix was to remote into the UR controller and manually support the arm's weight while re-engaging.

Symptoms

  • Studio power cuts out mid-move on Cinebot Max.
  • After power is restored, the robot will not engage — motors audibly attempt to engage, then a safety fault is reported.
  • Full shutdown and reset of the network/system does not resolve it.
  • The Track axis alone can be enabled without the rest of the robot engaging.
  • No obvious blown fuse or visible damage.

Community Guidance

[RESOLVED] Remote Into the UR Controller and Manually Support the Arm While Re-Engaging

Community — 22-23 July 2026

"Today the power went out in studio during our shoot. I've been unable to get the cinebot max to engage. Tried full shutdown and reset of the network and I can hear motors trying to engage, then i get a safety fault."

Multidyne/MRMC support asked whether remote access to the UR (Universal Robots) software was available, and flagged a blown UR-controller fuse as a possible cause:

"Are you able to access the UR software through VNC or Remina? Could be a blown fuse on the UR controller."

The actual root cause, confirmed via Remina (remote desktop into the UR controller):

"Remina revealed that robot moved out of position while powered off (likely a drop in the arm during the power out). We manually applied some upward pressure on the arm while engaging the robot and it successfully engaged. All systems working well now."

Steps:

  1. If Cinebot Max won't re-engage after any power interruption and a full reset doesn't resolve it, remote into the UR controller via VNC or Remina rather than only working from Flair's side.
  2. Check for a blown fuse on the UR controller as a first-pass hardware check.
  3. If the controller shows the robot out of position, the arm likely dropped under its own weight while unpowered during the outage.
  4. With a second person if possible, manually apply upward support to the arm while re-engaging from the UR side — this lets the controller re-establish position without the drop fighting the engage sequence.
  5. Once engaged, verify Track and all other axes independently before resuming the shoot.

confidence_score: 0.78