BCS100 Calibration Guide for CNC Fiber Laser Cutting Machines
The BCS100 height control system is a key component in modern CNC fiber laser cutting machines, ensuring accurate distance measurement between the nozzle and the metal sheet. Through precise calibration, the system builds a reliable relationship between capacitive signals and actual nozzle height, enabling stable, high-quality cutting performance with advanced fiber laser cutting technology.
Servo Calibration
Purpose
Servo calibration sets the foundational reference point for the Z-axis and ensures the servo system synchronizes movement and feedback correctly. This step is essential for accurate height control in any CNC fiber laser cutting machine.
When Servo Calibration Is Required
After every machine startup
After replacing metal sheets
After replacing the nozzle
When the system shows drift or height errors
Steps
Place the sheet on the cutting table.
Move the cutting head above the sheet using the software or handheld controller.
Open the BCS100 menu → F1 Calibration → 1 Servo Calibration.
⚠ Because the servo calibration causes slight oscillation, ensure the Z-axis is positioned in the middle of its travel range.
Press <ENT> to start calibration.
The system will automatically oscillate and record servo drift, and then return to the previous interface.
Clearing Wrong Servo Drift Values
If a previous servo calibration was incorrect:
F4 Clear → <ENT> Confirm → Drift values cleared
Torch Head (Float Head) Calibration
Purpose
To establish an accurate height–capacitance curve. This is the core of stable following performance in fiber laser cutting technology.
When Float Head Calibration Is Needed
After replacing the nozzle
After changing sheet material
When height following becomes unstable
When the capacitance curve appears abnormal
Steps
Enter BCS100 → F1 Calibration → 2 Float Head Calibration.
Move the nozzle to 1–5 mm above the sheet surface.
Ensure the sheet surface is stable without vibration.
Press <ENT> to start.
The System Automatically Performs Three Stages
(1) Touch-Plate Detection
The nozzle slowly moves downward to detect the exact touching point.
(2) Stability Detection
The nozzle moves upward slightly to check the stability of capacitance signals.
(3) Smoothness Detection
The nozzle continues to rise to analyze capacitance curve smoothness.
Calibration completed
Press <ENT> to save the settings.
A Height–Capacitance Curve will be displayed.
Parameter Meanings
Stability: Reflects signal steadiness; poor results indicate vibration or strong interference.
Smoothness: Reflects dynamic capacitance behavior during movement.
Effective Range: Capacitance change from 0.5 mm to infinity; a larger range improves following accuracy.
Automatic Adjustment
Purpose
Automatic adjustment fine-tunes internal parameters for the best height-following performance, ensuring stable and precise cutting results on any CNC fiber laser cutting machine.
Requirements Before Automatic Adjustment
Servo calibration completed
Z-axis has returned to home position
Float head calibration completed
A metal sheet is placed under the nozzle for following detection
Steps
Enter 3 Automatic Adjustment.
The system performs micro-adjustments around the nozzle height.
Internal parameters are optimized automatically.
Save the results and close the BCS100 interface.
Calibration is now complete.
The three core adjustments of BCS10
| Adjustment Type | Main Function | Trigger Conditions | Automatic Execution |
| Servo Calibration | Calibrates servo zero point and mechanical feedback | Machine startup, sheet replacement, nozzle change, drift issues | Semi-automatic |
| Float Head Calibration | Establishes capacitance–height curve | Nozzle change, sheet change, unstable height following | Automatic |
| Automatic Adjustment | Optimizes following parameters for stable cutting | After completing servo + float head calibration | Automatic |
Conclusion
BCS100 calibration is essential for achieving high laser cutting precision and stable performance in all CNC fiber laser cutting machines. By correctly completing the three key steps—Servo Calibration, Float Head Calibration, and Automatic Adjustment—users can fully leverage the advantages of modern fiber laser cutting technology for cleaner cuts, smoother edges, and more reliable industrial performance.
