GRMOT HS57C stepper motor driver—especially regarding signal, motor, encoder, and power terminals. This image aligns closely with what you’d find in related GRMOT models like HS1-57 or HSS57. HS57C—the following connections apply. 1. Power Input V+/AC → Positive of 24–50 V DC (or 18–36 V AC) V-/AC → Negative of the power supply 2. Motor Outputs A+ / A- → Coil A of the stepper motor B+ / B- → Coil B of the stepper motor 3. Control Signals (5–24 V DC, optically isolated) PU+ / PU- → Step (pulse) signal lines DR+ / DR- → Direction signal lines EN+ / EN- → Enable line—can be used to disable the motor or clear alarms Signal behavior: PU rising edge triggers stepping; pulse width should be at least 2.5 µs DR (direction) should be valid for at least 50 µs before a pulse is sent EN high (EN+ to high, EN- to low) puts driver in free (disabled) state—or clears alarms when necessary. 4. Encoder (Closed-Loop Feedback, if used) PA+ / PA-, PB+ / PB- → Encoder channels A and B VCC / GND → Encoder power supply (polarity must be correct. Summary Table Interface Driver Terminals Connection Purpose Power V+/AC, V-/AC 24–50 V DC (or 18–36 V AC) supply Motor A+, A- ; B+, B- Connect to the corresponding motor coils Control Signals PU+/PU- ; DR+/DR- ; EN+/EN- Step, Direction, Enable inputs Encoder (optional) PA+/PA- ; PB+/PB- ; VCC / GND Closed-loop feedback connections How to Integrate with Your Controller (e.g., Mach3, Arduino, Breakout Board) Connect Power Supply: Positive to V+/AC Negative to V-/AC Wire the Motor: Stepper coil A → A+ / A- Stepper coil B → B+ / B- Hook Up Control Signals: STEP+ → PU+ STEP- → PU- DIR+ → DR+ DIR- → DR- ENA+ / ENA- → EN+ / EN- (or leave open if not needed) Encoder (if applicable): Connect encoder lines to PA+/-, PB+/-, and provide power via VCC/GND Set DIP Switches (SW1–SW8): Configure microstepping, rotate direction, logic modes, and smoothing based on your setup. Final Notes This wiring is standard across GRMOT HS-series drivers, where the HS57C shares the same interface and functional design as its close relatives (e.g., HS1-57). Always double-check pin labels physically on your unit before powering up. And when in doubt, refer to the official manual or diagrams for your exact model
