STM is a Drive+Motor unit that fuses step motor and drive technologies into a single device, offering savings on space, wiring and cost over conventional motor and drive solutions. The STM also fits with the ST product family of step motors and drives for a complete motion control system.
The STM Drive+Motor combines a stepper motor with an integrated drive, offering space, wiring and cost savings over conventional solutions. It fits within the Applied Motion ST product family and supports common programming languages and tools. The manual covers product overview, ordering information, and key features such as dynamic current control, anti‑resonance, and encoder options.
Technical details include power amplifier specifications, controller functions, input/output connections, communication interfaces (RS‑232/RS‑485), and safety approvals. The document also describes setup procedures, auto‑setup, self‑test, microstep emulation, torque ripple smoothing, and programming options using the ST Configurator and Q Programmer software.
| Input voltage range | 24‑75 VDC |
|---|---|
| Power supply requirement | External 12‑70 VDC |
| Output torque (STM23x‑2) | 125 oz‑in |
| Current control | 4‑state PWM at 20 kHz |
| Microstep resolution | 200‑51200 steps/rev (increments of 2) |
| Ambient temperature range | 0 °C to 40 °C |
| Humidity rating | 90 % non‑condensing |
| Communication interface | RS‑232 or RS‑485 |
The STM drive can communicate via RS‑232 or RS‑485 interfaces.
The drive operates with an input voltage between 24 VDC and 75 VDC.
Torque Ripple Smoothing adjusts the phase current waveform to lower low‑speed torque ripple.
Yes, an optional 1000‑line encoder can be integrated into the motor housing.