Micromatik MPWR-136

Core Technical Specifications

• Input Power: Three-phase 380–480 VAC 50/60 Hz
• Rated DC Bus Output: 540 VDC
• Continuous Output Current: 136 A (MPWR-136 model naming basis)
• Peak Overload Current: 204 A (150% overload for 60 seconds)
• Cooling Method: Forced air cooling with built-in high-speed axial fan
• Overall Dimensions: L 590 mm × W 250 mm × H 450 mm
• Net Weight: 65 kg
• Protection Grade: IP20 cabinet internal installation
• Operating Ambient Temperature: -10 °C ~ +45 °C
• Communication Interface: RS485 Modbus RTU for real-time monitoring

Function & Performance Features

1. High-capacity IGBT rectifier bridge, low conduction loss, high energy conversion efficiency
2. Built-in active braking chopper circuit to absorb regenerative energy from servo motors during deceleration
3. Multi-stage hardware protection: three-phase input phase loss, overvoltage, overcurrent, overheat, DC bus short circuit
4. Digital real-time monitoring of bus voltage, output current, internal temperature and fan operating status
5. Support parallel expansion of multiple MPWR series units to meet ultra-large power multi-axis motion control demands
6. Soft-start charging circuit to eliminate instantaneous surge current when power on, protect upstream transformer and circuit breakers

Working Principle

1. Three-phase industrial AC input passes EMI filter and soft-start pre-charge circuit to charge DC bus capacitor group
2. IGBT full-wave rectifier converts AC to stable high-voltage DC bus power for servo drive group
3. Regenerative energy generated by motor braking is consumed via built-in braking resistor and chopper switch
4. Digital sampling chip collects real-time voltage, current and temperature signals, execute protection logic once threshold is breached
5. Modbus communication port uploads all operating parameters to upper industrial PLC/HMI for centralized monitoring

Material Composition & Structural Characteristics

• Main Cabinet: Thick galvanized steel sheet welded frame, anti-rust and vibration-resistant
• Power Semiconductor: Industrial-grade IGBT power modules with independent aluminum water-cooled heat sink
• Cooling System: Dual high-temperature resistant axial fans with dust filter screen
• Internal Capacitor Bank: High ripple current withstand aluminum electrolytic DC bus capacitors
• Control Board: Anti-interference multilayer PCB with conformal coating for humid workshop environments

Installation Requirements

1. Install inside sealed industrial electrical cabinet, reserve ≥300 mm front and rear ventilation space for fan air circulation
2. Cabinet must be equipped with air conditioner or heat exchanger to control internal temperature below 45 °C
3. Three-phase input cable must adopt shielded power cable, shielding layer single-point grounding
4. DC bus output wiring requires copper busbar connection to reduce line impedance and heat generation
5. Fix unit with M12 foundation bolts to avoid vibration loosening during long-term heavy load operation

Application Scenarios

• Heavy-duty metal stamping production lines
• Large CNC gantry machine tool multi-axis drive systems
• Metallurgical rolling mill servo control equipment
• Port container crane motion control
• Large packaging automated assembly lines
• Hydraulic press servo electric drive reconstruction projects

Usage Precautions

1. Regularly replace fan filter screens every 2 months in dusty metal processing workshops to avoid heat dissipation failure
2. Do not operate under 150% overload state for more than 60 seconds, otherwise IGBT module will overheat and burn
3. Cut off main power supply and wait 15 minutes before opening cabinet cover for maintenance to release DC bus residual high voltage
4. Avoid installation in environments with corrosive gas such as acid pickling workshops
5. If multiple units work in parallel, the cable length between each DC bus must be consistent to prevent current imbalance