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Pan / Tilt Bottleneck - Move Duration Or 800 Frame Error

Summary

An image-defined report showed axis move errors when move duration passed roughly 800 frames. The chat diagnosis was that pan/tilt were bottlenecking near limits or velocity limits even though the graph display looked acceptable.

Symptoms

  • Move errors appear when duration/frame count increases.
  • Graphs appear in range, but rig still trips.
  • Pan or tilt becomes the limiting axis.
  • Error can appear near pan/tilt limits or velocity limits.

Evidence

Timestamp User Media Evidence
2021-12-16 21:15 plamenbontchev Flair axis move error screenshot when move duration passed about 800 frames; pan or tilt bottleneck suspected., Flair graph or axis error screenshot for pan tilt bottleneck near duration or velocity limit. Image description: Axis move error/warning when move duration passed about 800 frames; pan/tilt bottleneck or velocity/limit issue suspected.
2021-12-16 21:15 - plamenbontchev: Image description: Axis move error/warning when move duration passed about 800 frames; pan/tilt bottleneck or velocity/limit issue suspected. 2021-12-16 21:15 - plamenbontchev: Image description: Axis move error/warning when move duration passed about 800 frames; pan/tilt bottleneck or velocity/limit issue suspected. [16/12/2021, 9:22:00 pm] ~ Grzegorz Najder: Guys, how can't mount Alexa mini LF on Bolt Junior Plus. Has it the saw mounting holes than Alexa Mini? [16/12/2021, 10:03:41 pm] ~ Peter Constan-Tatos: Looks like you’re good to go [16/12/2021, 10:07:06 pm] ~ . [16/12/2021, 10:07:12 pm] ~ . ▶

Media Text / Description

  • Media 1: 2021-12-16 21:15 - plamenbontchev: Image description: Axis move error/warning when move duration passed about 800 frames; pan/tilt bottleneck or velocity/limit issue suspected.
  • Media 2: 2021-12-16 21:15 - plamenbontchev: Image description: Axis move error/warning when move duration passed about 800 frames; pan/tilt bottleneck or velocity/limit issue suspected.
  • Media 3: [16/12/2021, 9:22:00 pm] ~ Grzegorz Najder: Guys, how can't mount Alexa mini LF on Bolt Junior Plus. Has it the saw mounting holes than Alexa Mini?
  • Media 4: [16/12/2021, 10:03:41 pm] ~ Peter Constan-Tatos: Looks like you’re good to go
  • Media 5: [16/12/2021, 10:07:06 pm] ~ .
  • Media 6: [16/12/2021, 10:07:12 pm] ~ .
  • Media 7: [16/12/2021, 10:12:06 pm] ~ .

WhatsApp Excerpts

Media Text / Description

  • 800 frames
  • axis move error
  • pan tilt bottleneck
  • tilt velocity limit
  • red axes rig model
  • Image description: Flair graph or axis error screenshot where the move fails around 800 frames because pan/tilt is likely near a travel or velocity limit.

[16/12/2021, 9:15:09 pm] ~ plamenbontchev: Hey everyone, has any of you experienced similar issue? I have a fairly lo g move which runs until 799 frames. As soon as I pass o er 800 frames duration I get axes move errors eventhoug the particular parts are with the limits? Here are two images og the current messages with the actual graphs of the axes in the background. Any help will be highly appreciated. It's not the first time I experience this situation.

[16/12/2021, 9:15:09 pm] ~ plamenbontchev:

[16/12/2021, 9:22:00 pm] ~ Grzegorz Najder: Guys, how can't mount Alexa mini LF on Bolt Junior Plus. Has it the saw mounting holes than Alexa Mini?

[16/12/2021, 9:25:51 pm] ~ Grzegorz Najder: #how can

[16/12/2021, 9:45:12 pm] ~ Peter Constan-Tatos: We normally mount the mini and mini LF using a decent cage on the camera and then finding holes line up to the 3/8 screws in the middle of the mrmc plate. That way you are supporting the camera from top and bottom.

[16/12/2021, 9:49:10 pm] ~ Grzegorz Najder: Thanks Peter, but I think this time we won't be able to get the cage, so I have to make sure that the holes spacing is the same

[16/12/2021, 9:53:59 pm] ~ Peter Constan-Tatos: Griszka I think they are the same but maybe someone else can confirm. I don’t want to mislead you 😬

[16/12/2021, 9:58:32 pm] ~ Grzegorz Najder: Thanks Peter, I'm also almost sure they r the same, but I have to have know that for 100% :)

[16/12/2021, 10:03:41 pm] ~ Peter Constan-Tatos: Looks like you’re good to go

[16/12/2021, 10:07:06 pm] ~ .:

[16/12/2021, 10:07:12 pm] ~ .:

[16/12/2021, 10:07:33 pm] ~ .: I still use cage

[16/12/2021, 10:12:06 pm] ~ .:

[16/12/2021, 10:18:34 pm] ~ .: This normaly i do , because only 1 camera body , and use for another shot

Community Solutions

[CONFIRMED] Inspect Rig Model And Red Axes

Browse/run slowly and inspect the rig model for axes highlighted in red or near limits. Do not rely only on curve graphs.

Confidence: 0.84

[LIKELY] Adjust Pan Limits Or Tilt Velocity Carefully

The reported fix was to tweak pan limits and slightly increase tilt velocity. Treat this as setup-specific and test at low speed.

Confidence: 0.72

[DANGEROUS] Do Not Simply Raise Limits To Mask A Real Collision

Confirm the physical axis has safe travel and cable clearance before increasing limits or velocity.

Confidence: 0.88

Official Documentation

Flair Classic Manual — Ch.5 Setups: Axis Setup — p.33

Flair Classic Manual — Ch.12 Job Type — p.199

Flair 7 Manual — Ch.5 Setups: Axis Setup — p.19

Flair 7 Manual — Ch.9 Job Storage: Job Type Configuration — p.163