TL;DR
After a collision, stop the machine, inspect the nozzle and protective glass, check beam centering, and do not restart cutting until beam centricity is verified on the nozzle hole.
What you might see
- machine E-stops with collision fault
- nozzle visibly bent or off-center
- cut quality noticeably worse after resuming
- head crash alarm on the TruTops control
Likely causes
Sheet material lifted or warped during cutting causing a nozzle strike
Incorrect Z-height setting on a thick material part program
Capacitive sensing fault causing incorrect standoff height
Sheet metal remnant left in the cutting area during a new sheet load
Required tools
- Replacement nozzles (set of sizes used in production)
- Replacement protective glass cartridge
- Ceramic tile or beam centricity test medium
- Laser safety goggles rated for fiber laser wavelength (1064 nm)
- LOTO kit
Safety first
- Never inspect or work on the cutting head without following the full TRUMPF laser lockout procedure.
- Fiber laser wavelength is invisible. Beam centricity testing requires the TRUMPF-approved method and laser safety eyewear.
- Do not restart cutting on production sheets until beam centricity is confirmed after any collision event.
Procedure
- 1
Acknowledge the E-stop fault on the TruTops control and note the fault log entry time.
- 2
Lock out the cutting head before inspecting it.
Warning: Follow the full TRUMPF laser lockout procedure before opening any beam path components. - 3
Remove and inspect the nozzle. Replace any nozzle that is bent, dented, or has a non-round or off-center bore.
- 4
Remove the protective glass cartridge and inspect for impact spatter or cracks. Replace if any damage is visible.[1]
- 5
Perform the TRUMPF beam centricity check (fire a low-power pulse onto a ceramic tile or tape over the nozzle). The burn mark must be centered in the nozzle bore.[1]
- 6
If the beam is off-center, the cutting head internal alignment has shifted. Contact TRUMPF service to realign the beam path. Do not attempt internal beam alignment without proper training and tooling.
- 7
Check the capacitive height sensor by running a slow manual traverse over a clean sheet surface and monitoring the Z offset.
- 8
Make a test cut on scrap before returning to production. Inspect the test cut edges for quality and the protective glass for any new spatter after cutting.
Sources
TRUMPF TRUMPF TruLaser 3030 / 5030 Laser Cutting Machine (Fiber) general technical documentation, TRUMPF
TRUMPF TruLaser 3030 / 5030 operator manual, collision recovery and beam centricity check procedures (general)
More guides for TRUMPF TRUMPF TruLaser 3030 / 5030
How to fix chiller overtemperature on a TRUMPF TruLaser 3030 / 5030
Chiller overtemperature stops the laser to protect the source. Check coolant level, clean the chiller condenser, and verify ambient temperature is within specification before restarting.
How to restore cut quality on a TRUMPF TruLaser 3030 / 5030 fiber laser
Degraded cut quality on a fiber laser is most often contaminated or damaged cutting optics, incorrect focus position, or inadequate assist gas pressure. Clean the protective glass first.
Stop fixing the same fault twice.
Dovient turns guides like this into your team's shared playbook, with AI that catches recurring issues before they break the line.