Woodward 3522-1004 是 EM-Driver 系列比例阀 / 伺服驱动器，专为发动机、燃气轮机的燃油 / 燃气比例阀与执行器设计，提供高精度电流驱动与闭环反馈，适配苛刻工业与发电场景，具备快速响应与完善保护机制。
核心参数与硬件规格
| 参数 | 详情 |
|---|---|
| 模块类型 | 比例阀 / 伺服驱动器（EM-Driver） |
| 驱动输出 | 4–20mA 标准电流环，可扩展 0–20mA/20–160mA |
| 控制输入 | ±10V 模拟指令，4–20mA 反馈信号接口 |
| 反馈适配 | LVDT/RVDT 位置传感器，电位计（可选） |
| 输出精度 | ±0.25% FS（25°C，标准配置） |
| 响应时间 | ≤5ms（阶跃指令 0–100%） |
| 供电电压 | 24VDC（±10%），功耗≤15W |
| 保护功能 | 过流、过压、短路、过热、反馈丢失 |
| 工作温度 | -40°C~+85°C（宽温工业级） |
| 防护等级 | IP20（面板安装），IP40（可选密封套件） |
| 安装方式 | DIN 导轨或面板安装 |
| 重量 | 约 0.8kg |
核心功能与技术特点
- 高精度电流驱动：为比例阀 / 执行器提供稳定电流环，适配 Woodward ProAct 系列执行器，确保阀门定位精度与重复性，满足发动机调速、燃气流量控制需求。
- 闭环反馈控制：支持 LVDT/RVDT 位置反馈，实时校正输出，抑制负载扰动与漂移，提升动态响应与控制稳定性。
- 灵活指令适配：兼容 ±10V 模拟指令与 4–20mA 反馈，可通过 DIP 开关配置输入 / 输出范围，适配不同控制器接口。
- 完善保护机制：内置过流、过压、短路、过热与反馈丢失告警，故障时自动限流或关断输出，保护驱动器与负载设备。
- 工业级可靠性：宽温设计，抗振动 / 冲击（符合 IEC 60068），适配发动机舱、电站等恶劣环境。
应用场景与适配系统
- 核心应用
- 发电设备：燃气轮机 / 柴油机的燃油调节阀、燃气控制阀驱动，适配 Woodward 505/501 调速器。
- 工业动力：压缩机、泵组的流量控制比例阀驱动，支持闭环调节。
- 船舶与海事：船用发动机燃油系统，适配恶劣海洋环境。
- 适配系统：Woodward ProAct 系列执行器、EM-800 系列电动执行器，兼容 505/501/2301A 等调速控制器，可直接替换同系列旧款驱动器。
- 替代与兼容：替换时需匹配供电电压、输出电流范围与反馈类型，更换后校验指令 - 反馈匹配度与响应时间。
安装与维护要点
- 安装规范
- 24VDC 供电需冗余配置，避免电压波动影响输出稳定性。
- 反馈线缆采用屏蔽线，与动力线分离敷设，减少电磁干扰。
- 导轨 / 面板安装需预留散热空间，确保通风良好。
- 调试与配置
- 通过 DIP 开关设置输入指令范围（±10V/4–20mA）与反馈类型（LVDT/RVDT）。
- 通电前校验接线极性，避免反接损坏驱动器。
- 微调增益与偏置，确保输出与指令线性匹配，无超调或振荡。
- 维护与故障排查
- 定期检查供电电压、输出电流与反馈信号，异常时排查接线或负载。
- 故障告警时查看 LED 指示灯（Power/Alarm/Ready），对照手册定位问题。
- 清洁散热通道，避免积尘导致过热保护触发。
与同系列模块差异
| 对比项 | 3522-1004（EM-Driver） | 3522-1005（EM-800 执行器） |
|---|---|---|
| 核心功能 | 比例阀 / 执行器电流驱动 | 高扭矩齿轮电机执行器 |
| 输出类型 | 4–20mA 电流环 | 机械输出轴（扭矩 14–27J） |
| 反馈适配 | LVDT/RVDT/ 电位计 | 内置位置传感器 |
| 应用场景 | 阀门驱动、执行器控制 | 直接驱动阀门 / 风门 |
Woodward 3522-1004 is an EM Driver series proportional valve/servo driver designed specifically for fuel/gas proportional valves and actuators in engines and gas turbines. It provides high-precision current drive and closed-loop feedback, suitable for harsh industrial and power generation scenarios, with fast response and comprehensive protection mechanisms.
Core parameters and hardware specifications
Parameter details
Module Type Proportional Valve/Servo Driver (EM Driver)
Drive output 4-20mA standard current loop, expandable 0-20mA/20-160mA
Control input ± 10V analog command, 4-20mA feedback signal interface
Feedback adaptation LVDT/RVDT position sensor, potentiometer (optional)
Output accuracy ± 0.25% FS (25 ° C, standard configuration)
Response time ≤ 5ms (step instruction 0-100%)
Supply voltage 24VDC (± 10%), power consumption ≤ 15W
Protection functions include overcurrent, overvoltage, short circuit, overheating, and feedback loss
Working temperature -40 ° C~+85 ° C (wide temperature industrial grade)
Protection level IP20 (panel installation), IP40 (optional sealing kit)
Installation method: DIN rail or panel installation
Weight approximately 0.8kg
Core functions and technical features
High precision current drive: provides a stable current loop for proportional valves/actuators, compatible with Woodward ProAct series actuators, ensuring valve positioning accuracy and repeatability, meeting engine speed control and gas flow control requirements.
Closed loop feedback control: supports LVDT/RVDT position feedback, real-time correction output, suppresses load disturbance and drift, and improves dynamic response and control stability.
Flexible instruction adaptation: compatible with ± 10V analog instructions and 4-20mA feedback, can configure input/output range through DIP switches, and adapt to different controller interfaces.
Improve protection mechanism: built-in overcurrent, overvoltage, short circuit, overheating, and feedback loss alarms, automatic current limiting or output shutdown in case of faults, to protect the driver and load equipment.
Industrial grade reliability: wide temperature design, vibration/shock resistance (compliant with IEC 60068), suitable for harsh environments such as engine compartments and power stations.
Application scenarios and adaptation systems
core application
Power generation equipment: Fuel control valve and gas control valve drive for gas turbine/diesel engine, compatible with Woodward 505/501 governor.
Industrial power: Flow control proportional valve drive for compressors and pump units, supporting closed-loop regulation.
Ship and Maritime: Marine engine fuel system, suitable for harsh marine environments.
Adaptation system: Woodward ProAct series actuators, EM-800 series electric actuators, compatible with speed controllers such as 505/501/2301A, can directly ｒｅｐｌａｃｅ old drives of the same series.
Substitution and compatibility: When replacing, it is necessary to match the supply voltage, output current range, and feedback type. After replacement, verify the command feedback matching degree and response time.
Key points for installation and maintenance
Installation specifications
Redundant configuration is required for 24VDC power supply to avoid voltage fluctuations affecting output stability.
The feedback cable adopts shielded wire and is laid separately from the power line to reduce electromagnetic interference.
The installation of guide rails/panels requires reserved heat dissipation space to ensure good ventilation.
Debugging and Configuration
Set the input command range (± 10V/4-20mA) and feedback type (LVDT/RVDT) through DIP switches.
Before powering on, verify the polarity of the wiring to avoid damaging the driver due to reverse connection.
Fine tune the gain and bias to ensure that the output matches the command linearly without overshoot or oscillation.
Maintenance and troubleshooting
Regularly check the power supply voltage, output current, and feedback signal, and troubleshoot wiring or loads in case of abnormalities.
When a fault alarm occurs, check the LED indicator light (Power/Arm/Ready) and refer to the manual to locate the problem.
Clean the heat dissipation channel to avoid dust accumulation that may trigger overheating protection.
Differences from modules in the same series
Comparison item 3522-1004 (EM Driver) 3522-1005 (EM-800 actuator)
Core function: Proportional valve/actuator, current driven high torque gear motor actuator
Output type 4-20mA current loop mechanical output shaft (torque 14-27J)
Feedback adaptation LVDT/RVDT/potentiometer with built-in position sensor
Application scenarios: Valve drive, actuator control, direct drive of valves/dampers
