STM42-M (with Brake) Integrated Stepper Servo Motor
42mm flange integrated stepper servo motor with built-in brake – features built-in brake and control logic with no external connection required, suitable for a wide range of compact automation equipment.
Features
- CANopen/RS485
- Built-in absolute magnetic encoder
- Optional brake models available
Models & Specifications
| Specifications | STM4234B-485-M-0FSB | STM4234B-CANopen-M-0FSB | STM4240B-485-M-0FSB | STM4240B-CANopen-M-0FSB | STM4248B-485-M-0FSB | STM4248B-CANopen-M-0FSB | STM4260B-485-M-0FSB | STM4260B-CANopen-M-0FSB |
|---|---|---|---|---|---|---|---|---|
| Flange Size | 42mm | 42mm | 42mm | 42mm | 42mm | 42mm | 42mm | 42mm |
| Holding Torque | 0.28 N·m | 0.28 N·m | 0.4 N·m | 0.4 N·m | 0.5 N·m | 0.5 N·m | 0.7 N·m | 0.7 N·m |
| Brake | Built-in Brake w/ Logic | Built-in Brake w/ Logic | Built-in Brake w/ Logic | Built-in Brake w/ Logic | Built-in Brake w/ Logic | Built-in Brake w/ Logic | Built-in Brake w/ Logic | Built-in Brake w/ Logic |
| Encoder type | 2500-line single-turn absolute magnetic encoder | 2500-line single-turn absolute magnetic encoder | 2500-line single-turn absolute magnetic encoder | 2500-line single-turn absolute magnetic encoder | 2500-line single-turn absolute magnetic encoder | 2500-line single-turn absolute magnetic encoder | 2500-line single-turn absolute magnetic encoder | 2500-line single-turn absolute magnetic encoder |
| Rated Voltage | 24 VDC | 24 VDC | 24 VDC | 24 VDC | 24 VDC | 24 VDC | 24 VDC | 24 VDC |
| Voltage Range | 12-36VDC | 12-36VDC | 12-36VDC | 12-36VDC | 12-36VDC | 12-36VDC | 12-36VDC | 12-36VDC |
| Inertia | 3.4×10^-6 kg·m² | 3.4×10^-6 kg·m² | 5.4×10^-6 kg·m² | 5.4×10^-6 kg·m² | 6.8×10^-6 kg·m² | 6.8×10^-6 kg·m² | 8×10^-6 kg·m² | 8×10^-6 kg·m² |
| Rated Current | 1.3 A | 1.3 A | 1.7 A | 1.7 A | 1.7 A | 1.7 A | 2.0 A | 2.0 A |
| Body Length | 84.5 mm | 84.5 mm | 90.5 mm | 90.5 mm | 98.5 mm | 98.5 mm | 109.5 mm | 109.5 mm |
| Weight | 0.46 kg | 0.46 kg | 0.52 kg | 0.52 kg | 0.60 kg | 0.60 kg | 0.71 kg | 0.71 kg |
* Scroll horizontally within the table area when the content is wide.
Specifications
| Shaft Diameter | Φ5 |
| Number Of Phases | 2 |
| Step Angle | 1.8° |
| Encoder | 2500-line single-turn absolute magnetic encoder |
| Control Modes | CiA402 Mode,Manufacturer Mode |
| External Control Interface | DI – Non-isolated NPN Input,DI – Non-isolated PNP Input,DI – Non-isolated Switch Input,DI – Isolated Opto Single-Ended Input,DI – Isolated Opto Differential Input,DO – Isolated Open-Drain Output,DO – Non-isolated MOSFET Output,AI – 0–10V Analog Input,AI – ±10V Analog Input |
| CiA402 Mode | PP, VM, PV, PT, HM, IP, CSP, CSV, CST |
| DI (Digital Input) | Quantity: 3, Logic 1 signal: 5V or 24V, Logic 0 signal: 0-2V ;with a maximum PWM pulse frequency of 2MHz. Configurable functions: 1. Enable 2. Positive and negative limits 3. Origin switch 4. Alarm reset 5. Pause 6. Switch between multiple operation instructions |
| DO (Digital Output) | Quantity: 2 units, MOS open-drain output, maximum load current 100mA, maximum voltage 30V. Configurable functions: 1. Motor run/stop 2. Target reached 3. Alarm output. |
| AI (Analog Input) | Quantity: 1; Input method: single-ended input; Signal type: voltage signal; Resolution: 12-bit; Voltage: 0~10V; Accuracy: reference error ≤1%; Configurable functions: dead zone, filtering, offset, scaling, direction. |
| Operating Temperature | 0°C to 40°C |
| Operating Altitude | <1000m |
| Fault Alarm | Overvoltage, undervoltage, overheat, locked rotor |
| Servo Function | Soft limit, gain switching, S-curve planning, vibration suppression, parameter identification, online upgrade |
Product Details
The STM42M series of integrated stepper servo motors is a high-performance, low-power stepper servo product independently developed by NiMotion. Based on the excellent closed-loop control system and the integrated design concept, this product integrates the stepper motor, encoder and driver into one, adopts FOC (field-oriented control), supports communication buses such as RS485 and CANopen, and has the characteristics of compact size and simple wiring. The stepper servo motor has the dual functions of a servo motor and a stepper motor, and the price is only at the level of the stepper motor, which can provide a cost-effective solution for applications that require the performance of the servo motor.
Product Features
Highly integrated design
Integrates Stepper motors, encoders and drives into a single compact unit, so no external drive is required. Compared with conventional separated solutions it saves considerable installation space, needs less wiring, and makes commissioning and maintenance easier.
Advanced Drive Algorithm
Adopts FOC (field-oriented control) and SVPWM for smooth torque output, excellent low-speed performance and lower operating noise and vibration.
High Precision Encoder Feedback
Built-in 17-bit encoder (multi-turn absolute counting, automatic storage of power loss) provides real-time position and speed feedback for more accurate closed-loop control; multi-turn absolute counting and automatic position storage on power loss mean no re-homing is needed after power-up.
Multi-bus communication support
Supports CANopen and RS485 communication, allowing quick connection to mainstream PLCs, motion controllers and host systems, with flexible networking and easy expansion.
Standard CiA 402 Sport Mode
Supports CiA 402 standard motion modes (PP, PV, HM, CSP, CSV, etc.) as well as position mode, velocity mode and torque mode, ensuring compatibility with mainstream fieldbus motion-control architectures and making replacement and commissioning easier.
Wide Voltage Input
Wide input voltage range of 12 ~36 VDC, suitable for various power-supply environments and giving greater flexibility in system integration and retrofitting.
Application in AGV Equipment
This integrated stepper servo motor series is applicable to AGV drive wheels, steering actuators, lifting platforms, and fork positioning mechanisms. Its compact integrated design saves vehicle space, leaving more room for batteries and cargo. Built-in encoder enables full closed-loop control, adapting to floor irregularities and load variations. Multiple communication protocols are supported for compatibility with various navigation systems.
Downloads
Companion Products
USB to CAN converter with isolation, IP65 protection, and secondary development SDK support.
USB to RS485 converter with active termination, isolation, IP65 protection, and secondary development SDK support.
Communication cable for NiMotion integrated motors.
