คำอธิบาย
Stepper Driver SH-20504
- ไฟเลี้ยง: 24–50VDC (0.2KVA)
- กระแสสูงสุด: 4.0A/phase (เลือกได้ 2.5 / 3.0 / 3.7 / 4.0A ผ่าน DIP switch)
- โหมดขับ: Constant current PWM
- ไมโครสเต็ป:
- Type A → 4, 8, 16, 32
- Type B → 5, 10, 20, 40
- อินพุตสัญญาณ: TTL compatible, Opto-isolated
- ความถี่สัญญาณ: รองรับ 50kHz (option ถึง 200kHz)
- ฟังก์ชันพิเศษ:
- Dynamic optimization (auto tune, init ~5s)
- Auto half-current mode (ลดกระแสเมื่อ idle)
- Offline mode (shaft free run)
- Protection: Over-current, over-voltage, phase error
- สิ่งแวดล้อมใช้งาน:
- Temp: -5℃ ~ +40℃
- Humidity: <80%RH
- Cooling: Forced air
- ขนาด/น้ำหนัก: 133×77×46 mm / 0.52 kg
- การติดตั้ง: ต้องระบายอากาศดี, เว้นระยะ ≥5cm หากติดตั้งหลายตัว, แนะนำแยกสายไฟแรงดัน/สัญญาณ
SH-20504 2-Phase Hybrid Stepper Motor Microstepping Driver
- Electrical Specifications (at Tj = 25℃)
- Power Supply: 24V – 50VDC, capacity 0.2KVA
- Output Current: Peak 4.0A/phase (Max), adjustable via DIP switch
- Drive Method: Constant current PWM control
- Excitation Modes:
- Type A: 4, 8, 16, 32 microsteps
- Type B: 5, 10, 20, 40 microsteps
- Insulation Resistance: >100MΩ (normal temperature & pressure)
- Dielectric Strength: 0.5KV, 1 min (normal temperature & pressure)
Environmental Parameters
- Cooling Method: Forced air cooling
- Operating Environment: Avoid dust, oil mist, corrosive gases
- Temperature (Operation): -5℃ ~ +40℃
- Humidity (Operation): <80%RH, no condensation or frost
- Vibration: 5.9m/s² Max
- Storage Temperature: -40℃ ~ +55℃
- Storage Humidity: <93%RH, no condensation or frost
Physical Parameters
- Dimensions: 133 × 77 × 46 mm
- Weight: 0.52 kg
Features
- New bipolar constant-current microstepping control mode
- Innovative dynamic optimization circuit for performance tuning
- Up to 40 microstepping modes available
- 24V–50V DC power input
- Max drive current 4.0A/phase
- TTL-compatible, opto-isolated input signals
- Convenient output current setting
- Over-current, over-voltage, and phase error protection
- Offline (free-running) holding function
- Compact size, easy installation
- CE certified
Function and Usage
- Power Supply Input voltage: 24V–50VDC, indicated by red LED.
- Ripple peak voltage must not exceed 50V.
- Transformer secondary output recommended <30VAC (no-load).
- Lower voltage reduces torque at high speed but improves smoothness and lowers heating.
- Pay attention to polarity; never reverse connect!
Output Current Selection
- Maximum 4.0A/phase (peak).
- Selectable via DIP switch (2.5A / 3.0A / 3.7A / 4.0A).
- For bipolar motors: select 120%–140% of rated current.
- For 6-lead unipolar motors: select 70% of rated current.
Microstep Selection
- Type A: 4, 8, 16, 32 steps/rev.
- Type B: 5, 10, 20, 40 steps/rev.
- Set before power-on (driver only checks microstep mode at startup).
Single/Dual Pulse Selection
- Set via DIP switch:
- Single pulse: Direction controlled by logic level of DIR input.
- Dual pulse: CW pulse = forward, CCW pulse = reverse.
Automatic Half Current
- When enabled, driver enters half-current mode if no pulse is received for 1s.
- Current reduces to 50%, saving energy and reducing heating.
Offline Function
-
When OFFLINE signal is active, phase current is cut off → free shaft rotation.
Protection & Optimization
- Dynamic Optimization: Adjusts drive automatically, requires ~5s initialization.
- Phase Error Protection: Wrong wiring won’t damage driver, but motor torque drops sharply.
Signal Inputs
- Opto-isolated pulse, direction, and offline inputs.
- Compatible with common-cathode, common-anode, and differential signals.
- Pulse frequency response: up to 50kHz (can be customized to 200kHz).
- Minimum low-level pulse width: 5µs.
- Direction signal must lead pulse by at least 10µs.
- Use current-limiting resistors if input >5V (e.g., 1kΩ for 12V, 2kΩ for 24V).
Mechanical & Installation
- Ensure good ventilation; check cooling fan regularly.
- Maintain at least 5 cm spacing between multiple drivers in the cabinet.
- Separate power and signal wiring, or use shielded cable if interference sources exist.
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