Confirm STFxx-EC compatibility with the RMP EtherCAT Motion Controller
In an EtherCAT system, RMP serves as the MainDevice and coordinates supported EtherCAT SubDevices and machine I/O. Whether an STFxx-EC variant is supported depends on its exact model and configuration; contact RSI support with the complete part number before planning an RMP system.
The STFxx-EC combines a stepper drive with a built-in motion controller. Its EtherCAT models communicate over CoE and support CiA 402. Depending on the exact model, available drive modes include Profile Position (PP), Profile Velocity (PV), Cyclic Synchronous Position (CSP), and Homing (HM); supported EtherCAT variants can also run stored Q programs triggered by EtherCAT commands. Built-in anti-resonance and torque-ripple smoothing are designed to improve midrange stability and low-speed smoothness. Confirm the selected model’s capabilities and size the motor against the application’s load, speed, and acceleration requirements.
What stands out about STFxx-EC
Moons positions the STFxx-EC around integrated control, compact high-torque design, and efficient stepper motion with low vibration, noise, and heat. The features below show how the family supports those goals; actual results depend on the selected model, motor, load, and operating conditions.
- Intelligent built-in controller
The drive combines stepper control and motion functions. Supported EtherCAT models can store Q programs and start them from EtherCAT commands.
- Single-axis to multi-axis control
Select single-axis drives or two- and four-axis configurations. Dual-port RJ45 EtherCAT connections support daisy-chain layouts; axis and STO options depend on the model.
- Smoother, quieter motion
Anti-resonance damping helps reduce midrange vibration, while torque-ripple smoothing supports smoother low-speed operation. Moons also highlights low-noise, low-heat operation as a design goal.
- Compact, high-torque design
The family is designed for compact machines that need stepper torque and long service life. Check the motor’s torque-speed curve and thermal limits against the application duty.
- Flexible machine I/O
Standard single-axis models provide up to 8 digital inputs and 4 digital outputs. Other configurations have different I/O counts, as shown in the model table below.
- Setup and self-test onboard
Startup checks measure motor parameters and can detect open or short circuits, helping engineers identify wiring and motor issues during commissioning.
Model options at a glance
The STFxx-EC name covers several single-axis and multi-axis configurations. Use the full model number to confirm the ratings and I/O for your installation.
| Drive configuration | Output current | Input voltage | Configuration notes |
|---|---|---|---|
| STF03-ECX / STF06-ECX | 0.1–3.0 A / 0.1–6.0 A per phase (sine peak) | 12–48 VDC | Single-axis standard models; 8 digital inputs and 4 digital outputs |
| STF06-ECX-mini | 0.1–6.0 A per phase (sine peak) | 12–48 VDC | Compact single-axis model; 5 digital inputs and 2 digital outputs |
| STF05-ECX-H / STF10-ECX-H | 0.1–5.0 A / 0.1–10.0 A | 24–48 VDC / 24–60 VDC | Single-axis push-in I/O models; 5 digital inputs and 2 digital outputs |
| STF05/10-4X-ECX(-S) | 0.1–5.0 A/axis or 0.1–10.0 A/axis, by model | 24–60 VDC | Four horizontal axes; 5 digital inputs and 3 digital outputs per axis; STO on “-S” models |
| STF05/10-2XU-ECX(-S) | 0.1–5.0 A/axis or 0.1–10.0 A/axis, by model | 24–60 VDC | Two vertical axes; 3 digital inputs and 2 digital outputs per axis; STO on “-S” models |
| STF05/10-4XU-ECX(-S) | 0.1–5.0 A/axis or 0.1–10.0 A/axis, by model | 24–60 VDC | Four vertical axes; 3 digital inputs and 2 digital outputs per axis; STO on “-S” models |
The multi-axis table lists peak current per axis; MOONS’ brochure separately gives summed continuous-current ratings for certain configurations. Current, I/O count, connector style, axis count, and STO availability vary by exact ECX model and suffix. Confirm the part number and its hardware manual before choosing a power supply, wiring I/O, or finalizing motor sizing.
EtherCAT multi-axis configurations
Choose a horizontal or vertical two- or four-axis package to suit your machine layout. Select a tab to view its EtherCAT connection schematic.
Horizontal four-axis layout
One drive controls four stepper motors.
Vertical two-axis layout
A compact two-axis drive connects to two stepper motors.
Vertical four-axis layout
The vertical four-axis drive controls four stepper motors.
Compatible with the RMP EtherCAT Motion Controller
This page does not identify an STFxx-EC configuration verified with RMP. Before choosing an STF model for an RMP system, contact RSI support with the complete part number and confirm its capabilities in the hardware manual.