Description

1. Professional Selection & Installation: Installation must be performed by certified elevator technicians with expertise in inverter systems. Before starting, shut off the elevator’s main power supply and follow lockout-tagout protocols to eliminate electrical hazards. Select the correct model based on the traction motor’s power rating: UD1 for 3.7-5.5kW motors, UD2 for 7.5-11kW, and UD3 for 15-18.5kW. Mount the inverter drive board in the control cabinet’s designated position using heat-dissipating brackets (to prevent overheating) and secure it with corrosion-resistant screws. Connect high-voltage power wiring (input/output terminals) and low-voltage control wiring (signal lines to main controller, encoders, and safety sensors) — adhere to the manufacturer’s official service manual for precise wiring diagrams and torque specifications. After installation, verify wiring polarity and tightness (loose connections can cause arcing or component damage) and power on the system to initialize the inverter.

2. Parameter Configuration & Calibration: Use the elevator’s main controller or manufacturer-approved programming software to configure key parameters: motor rated voltage/current, speed range, acceleration/deceleration time, PID control parameters, and safety protection thresholds (overvoltage, overcurrent, overheating). Calibrate the encoder signal to ensure accurate speed feedback and synchronization with the main controller. Nanjing Zhuye Elevator Parts recommends conducting a no-load test first to verify motor rotation direction and speed regulation performance, then a load test to confirm stable operation under rated passenger/cargo capacity.

3. Routine Inspection & Maintenance: Maintenance teams should conduct regular inspections semi-annually. Visually check for physical damage (burnt components, swollen capacitors, loose connectors) and signs of overheating (discolored heat sinks, abnormal fan operation). Inspect high-voltage terminals for corrosion or arcing marks. Clean the board’s surface, heat sinks, and cooling fans with a dry, anti-static cloth to remove dust and debris (dust accumulation reduces heat dissipation efficiency). Use professional testing equipment to monitor input/output voltage/current, frequency conversion accuracy, and temperature rise (should not exceed 85℃ under full load). Document inspection results, including model-specific power performance data, to track trends and identify potential issues early.

4. Troubleshooting Operational Issues: If the elevator experiences erratic speed changes, failure to start, overcurrent/overvoltage alarms, or sudden stops, troubleshooting the inverter drive board is essential. First, verify the input power supply (voltage stability, phase sequence) and check wiring connections for damage or looseness. Use diagnostic software to retrieve error codes and analyze fault logs (common issues include encoder signal loss, IGBT module failure, or parameter mismatches). For model-specific issues (e.g., UD3’s high-power load glitches or UD1’s low-voltage instability), inspect corresponding power modules and protection circuits. For persistent problems like internal circuit short circuits or uncorrectable error codes, contact Nanjing Zhuye Elevator Parts’ technical support team for expert guidance tailored to OVF30 AFA26800UD3/UD2/UD1 systems.

5. Safety Precautions: Never handle the inverter drive board without proper high-voltage electrical training. Do not attempt maintenance while the system is powered on—allow residual energy to discharge for at least 15 minutes after shutting off power. Wear insulating gloves, safety goggles, and anti-static wristbands during installation or inspection. Avoid modifying the board’s circuitry, power modules, or parameter settings—such alterations compromise safety, void the warranty, and may lead to catastrophic system failures.

1. Standard Replacement Cycle: Under normal operating conditions (8-12 hours of daily use in medium-traffic buildings), the AFA26800UD3/UD2/UD1 has an average service life of 8-10 years. Nanjing Zhuye Elevator Parts recommends a comprehensive performance audit every 4 years to assess power conversion efficiency, IGBT module aging, and thermal stability.

2. Factors Shortening Lifespan: High-traffic environments (airports, malls, transit hubs) with 14+ hours of daily operation or frequent full-load operation (especially UD3 in high-capacity elevators) may require replacement every 6-7 years. Harsh operating conditions such as extreme temperatures (below -5℃ or above 40℃), high humidity, poor ventilation in control cabinets, or frequent power surges can accelerate component degradation. Poor maintenance (infrequent cleaning, ignored error codes) also shortens service life by causing cumulative damage to power modules.

3. Key Signs for Replacement: Replace the inverter drive board immediately if you observe persistent power-related errors (overcurrent/overvoltage alarms), reduced speed regulation accuracy, abnormal heat emission, burnt components, failed load tests, or if the board has exceeded the 10-year maximum service life. Delaying replacement can lead to sudden elevator stops, traction motor damage, and increased maintenance costs.

4. Replacement Best Practices: Always use a genuine Elevator OVF30 Inverter Drive Board AFA26800UD3/UD2/UD1 from a trusted supplier like Nanjing Zhuye Elevator Parts to ensure full compatibility and safety compliance. Before replacement, isolate the elevator power, document existing wiring configurations and parameter settings, and back up the main controller’s program. Install the new board following the manufacturer’s guidelines, reconnect wiring accurately, and reconfigure parameters to match the elevator’s specifications. Conduct comprehensive tests—including no-load speed calibration, load operation simulation, and safety protection verification—before returning the elevator to service. Dispose of the old board in accordance with local electronic waste regulations (high-voltage components require specialized recycling).