WOODWARD 3522-1004 Electronic Speed Controller

WOODWARD 3522-1004 Electronic Speed Controller

Specific Parameters​

• Electrical Parameters​

Supply Voltage: 18-32V DC wide-range power supply, rated voltage 24V DC​

Speed Input: Supports 2 channels of magnetic pickup signals (0.5-10kHz frequency range), 1 channel of Hall-effect sensor signals (5-20kHz frequency range), input impedance ≥10kΩ​

Control Output: 1 channel of 4-20mA current output (drives fuel actuator, load impedance 0-500Ω), 2 channels of dry contact outputs (fault alarm, operation ready, rating 5A/250V AC)​

Communication Interface: 1 channel of RS485 serial port (supports Modbus RTU protocol, baud rate adjustable 9600-115200bps, 8 data bits, 1 stop bit, optional parity bit)​

Power Consumption: ≤15W under normal operation, ≤20W under full-load control​

Isolation Level: Electrical isolation between power supply and signal circuit (2.5kV AC/1 minute), optoelectronic isolation between input and output circuits (1kV AC/1 minute)​

Protection Functions: Overvoltage protection (36V DC threshold, self-recovery), overcurrent protection (cuts off when output current ≥25mA, restarts after fault elimination), overspeed protection (configurable threshold, cuts off fuel output when triggered)​

Control Accuracy: Speed control accuracy ±0.1% rated speed, load regulation accuracy ±0.5% rated load​

• Environmental Parameters​

Operating Temperature: -40°C to 70°C (non-condensing, no derating during startup from -40°C to 0°C)​

Storage Temperature: -55°C to 85°C​

Relative Humidity: 5% to 95% (non-condensing, continuous operation for 72 hours at 90% humidity and 40°C without failure)​

EMC Immunity: Complies with EN 61326-1 industrial standard, ESD protection ±15kV (air discharge), ±8kV (contact discharge), RF radiation protection ≤54dBμV/m (30MHz-1GHz)​

Vibration Resistance: 10-500Hz, 2g acceleration (IEC 60068-2-6 standard, sinusoidal vibration, each axis tested)​

Shock Resistance: 30g acceleration, 11ms duration (IEC 60068-2-27 standard, half-sine shock, 3 times per axis)​

Protection Class: IP20 (module itself, requires power equipment control cabinet for overall protection)​

Certification Standards: CE (EMC and safety), UL 508C (industrial control equipment), ATEX Zone 2 (requires safety barriers for explosive areas)​

• Mechanical Parameters​

Dimensions: 150mm (L) × 100mm (W) × 50mm (H, including terminals)​

Weight: Approximately 0.6kg​

Mounting Method: 35mm DIN rail snap-on mounting (compliant with EN 60715 standard) or flat surface screw fixing (M4 screw, torque 0.8N·m)​

Housing Material: Flame-retardant reinforced plastic (UL 94 V-0 grade, oil-resistant, weak chemical corrosion-resistant)​

Terminal Type: Spring-loaded crimp terminals (compatible with 16-24 AWG wires, tool-free wiring)​

Indicators: Power Status (PWR, green, steady on for normal), Operation Status (RUN, green, 1Hz blinking for normal), Fault Status (ERR, red, steady on for fault), Communication Status (COM, yellow, blinking for normal communication), Overspeed Warning (OVER, orange, steady on when approaching overspeed threshold)​

Product Performance​

The speed control response time is ≤100ms (from speed deviation occurrence to actuator action), which can quickly suppress speed drift caused by load fluctuations; under 18-32V DC wide-voltage power supply, the output signal accuracy maintains ±0.1% full scale, adapting to unstable power supply scenarios (e.g., vehicle-mounted, marine power supplies).​

Supports three-stage speed control of “idle speed-rated speed-overspeed protection”; idle speed setting range 500-2000rpm, rated speed range 1000-3000rpm, overspeed protection threshold configurable between 110%-120% rated speed; load regulation adopts feedforward + PID composite control, speed overshoot ≤5% when load changes suddenly (±20% rated load), recovery time ≤2 seconds.​

The fault diagnosis module can identify 12 types of faults such as sensor disconnection, actuator jamming, and power undervoltage, with diagnostic coverage ≥98%; fault information is uploaded to the monitoring system in real time via RS485, and dry contact alarm is triggered simultaneously; the module’s Mean Time Between Failures (MTBF) is ≥500,000 hours (MIL-HDBK-217F, 25℃ environment), adapting to 24/7 continuous operation of power equipment scenarios.​