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Multi-Axis Systems — Combining Linear Axes
This page explains how to combine NILAB linear axes into multi-axis systems (2D, 3D, gantry, pick-and-place) and how to coordinate them. Use it when your machine needs motion on more than one axis, or when you want a compact, high-dynamics system built from integrated motors.
Multi-axis configurations
| Configuration | Description | Typical NILAB axes |
| 2D (X-Y) | Two axes, coordinated motion in a plane | GDM, LM, ULCO, NLi |
| 3D (X-Y-Z) | Two planar axes plus a vertical Z axis | GDM + LM + LMA/NELA, or NLi |
| Gantry | Two parallel axes carrying a cross-carriage (off-axis payload) | GDM (multi-carriage), LM |
| Pick-and-place (2D) | Parallel kinematic robot for fast handling of small parts | NLiP |
Which axes for a multi-axis system
GDM — the module version of the Green Drive motor with a carriage and an integrated linear guide. It is available in a multi-carriage configuration and is designed for off-axis payload and multi-axis systems. Ideal for gantry and 2D systems.
LM — long-stroke, high-force stage on an aluminium profile. Suitable for the long-travel axis (X) of a gantry, with a wide choice of encoders and fieldbuses.
ULCO — modular belt-driven linear units with unified T-slots. Easy to combine into self-supporting multi-axis systems for small to medium power.
NLiP — a 2D pick-and-place robot based on two miniature integrated-drive linear motors using parallel kinematics. Handles parts up to 2 kg with high acceleration in a small space; it is programmed with NILAB Starter.
NLi / NLi-EtherCAT — integrated motors with a very compact form factor and low cabling effort; suitable for daisy-chain connection.
How to coordinate the axes
| Option | Description | Link |
| NILAB Starter Software | Configures the motion parameters of the integrated drives, offers application GUIs and auto-teach for single and parallel motion | NILAB Starter |
| EtherCAT (integrated) | NLi-EtherCAT combines the integrated drive with an EtherCAT interface for interpolated motion | NLi-EtherCAT |
| EtherCAT (gateway) | The NILAB EtherCAT Bus Interface connects up to 10 NLi motors (CANopen profile positioning, or Modbus RTU) to the EtherCAT fieldbus | EtherCAT Bus Interface |
| Fieldbuses on LM axes | LM axes are delivered ready for EtherCAT, ProfiNET or CANopen and common servo drives | LM Linear Stage |
System design considerations
- Mechanical structure — keep the moved mass low and the rigidity high; see the Machine design requirements (mass reduction, stiffness, natural frequencies ≥ ~200 Hz). - Off-axis payload — use GDM (or a dedicated cross-carriage) when the load is off the axis centreline. - Environment — choose the bellows version (GDM) or IP-rated axes for washdown / dust / food-grade applications. - Cabling — integrated motors (NLi, NLi-EtherCAT) reduce cabling effort; use daisy-chain where supported.
How to proceed
1. Define the motion task — 2D, 3D, gantry, pick-and-place; stroke, speed, acceleration, payload. 2. Select the axes — use the Axis selection page. 3. Select the coordination — NILAB Starter, EtherCAT, or a fieldbus. 4. Design the machine — see the Machine design requirements. 5. Commission — use NILAB Starter (single and parallel motion, auto-teach, diagnostics).