Woodward 5501‑365 Input‑Output Module
Product Introduction
Woodward 5501‑365 is a field terminal I/O interface module matched with the MicroNet TMR control system. As a signal conversion unit between the controller and field instruments, it is used to connect analog input and output signals, and is suitable for internal installation of control cabinets for steam turbines, gas turbines and compressor units. The Woodward 5501‑365 receives signals from the main control board to complete wiring conversion for field sensors and actuators. It supports single‑mode and triple‑redundant architecture configurations. Working with MicroNet series CPU boards, 5501‑365 completes the collection of process signals such as unit speed, pressure and valve position as well as servo drive output, and is widely deployed in key control loops of turbomachinery.
Technical Specifications
| Part Number | 5501‑365 |
| Product Type | Analog Input‑Output Field Terminal Module |
| Compatible Platform | MicroNet TMR, MicroNet Plus System Rack |
| Signal Type | Software configurable 4‑20mA / 0‑5VDC analog signal |
| Isolation Rating | 500Vrms galvanic isolation between field side and logic side |
| System Power Supply | Backplane 24VDC power supply, no separate external power required |
| Signal Refresh Cycle | Synchronized with CPU task cycle, minimum 5ms scanning |
| Operating Ambient Temperature | ‑10℃ ~ +60℃ (inside control cabinet) |
| Mechanical Mounting | Rack backplane mounting, compatible with MicroNet series chassis |
| Interface | High‑density Euro‑connector + screw terminal blocks |
| Weight | Approx. 0.4kg |
Core Advantages
- Redundant system compatibility: 5501‑365 natively supports MicroNet TMR triple modular voting architecture, and can also be used for standard non‑redundant MicroNet Plus systems. One single module fits two system configurations to reduce spare part types.
- Galvanic isolation protection: isolation between field loops and controller logic loops prevents surge interference from damaging main CPU boards and improves anti‑interference performance of the unit control system.
- Convenient maintenance: all field wiring terminates on this module’s terminals. Main I/O boards can be hot‑swapped without disconnecting field cables.
- Flexible signal configuration: analog channels switch between 4‑20mA and 0‑5V via software without hardware modification, compatible with transmitters for pressure, valve position and temperature.
- Synchronized system sampling: signal updates are aligned with CPU task cycles to guarantee timing consistency for turbine control loops and meet fast response requirements of steam turbine controls.
Product Features
- The Woodward 5501‑365 is a Field Termination Module (FTM). It performs no computation and only handles signal isolation and wiring distribution. Signal processing is completed by system I/O boards inside the rack.
- High‑density terminal layout integrates multiple analog input and output points, simplifies cabinet internal wiring and reduces cable quantity inside the cabinet.
- Euro‑style backplane connector plugs directly into the chassis backplane for high‑speed parallel bus communication with system I/O boards, without occupying external communication ports.
- Works with various Woodward acquisition boards, accepting inputs from magnetic pick‑up speed probes, servo actuators, pressure transmitters and other field devices.
Complies with industrial cabinet mounting standards, suitable for long‑term continuous operation of steam turbines and gas turbines in industrial cabinet environments.
Application Fields
- MicroNet TMR cabinets for speed and load control of steam turbines in thermal power / cogeneration plants
- Fuel valve actuator signal acquisition and output loops for gas turbine units
- Anti‑surge control of compressors in petrochemical industry with Vertex controller supporting systems
- Signal interface expansion for power generation turbine units and turbo expanders
Signal conversion inside complete Woodward MicroNet control cabinets for offshore platforms and factory captive power stations
Product Comparison
| Part Number | Product Name | Key Differences |
|---|---|---|
| 5501‑365 | Analog I/O Field Termination FTM | Analog signal, used for AI/AO board wiring & isolation, compatible with TMR / Plus racks |
| 5501‑372 | TMR High‑Density Analog FTM | Exclusively for TMR triple‑redundant high‑density I/O boards, higher channel count, cannot be used for standalone Plus systems |
| 5437‑523 | Speed Sensor FTM | Dedicated for MPU speed signals, no general analog processing, for speed input board wiring |
| 5501‑325 | Discrete Digital FTM | Handles DI/DO discrete signals, no analog channels, for relay and limit‑switch wiring |
Related Matching Products
- Chassis & Racks: 5453‑279 MicroNet TMR Chassis, 5453‑829 MicroNet Plus 8‑Slot Chassis
- CPU Modules: 5466‑1247 5200CPU MicroNet TMR; 5466‑1511 MicroNet Plus P1020 CPU
- Analog I/O Main Boards: 5466‑1105 High‑Density Combined I/O Board, paired with 5501‑365
- System Power Supply: 5501‑370 MicroNet TMR 24VDC Power Module
- System Cables: 5501‑502 MicroNet TMR Analog Signal Cable, for connection between I/O board and 5501‑365
- Software Tool: GAP programming software, for channel signal type configuration of 5501‑365
FAQ
Q: Can 5501‑365 work standalone without I/O main board?
A: No. The 5501‑365 is a field termination FTM functioning only as wiring and isolation interface. It must be used together with MicroNet‑series I/O main boards. It contains no signal‑processing chips and cannot acquire or output signals independently.
Q: Can 5501‑365 directly replace 5501‑372 inside TMR cabinets?
A: No. 5501‑372 is a dedicated high‑density FTM for TMR systems with different backplane pin definitions. Hardware compatibility does not exist. Please strictly follow manual for board‑FTM pairing selection.
Q: Does 5501‑365 support hot‑swap for channels?
A: The module itself supports rack hot‑swap without system shutdown. However, do NOT plug/unplug external field analog cables under powered condition; hot‑disconnecting field cables may introduce surge interference.
Q: Can analog channels of 5501‑365 accept thermocouple or RTD signals?
A: Not supported. Thermocouple and RTD inputs require dedicated RTCnet/RTD modules. 5501‑365 only processes standard 4‑20mA and 0‑5V analog signals.
Q: What parameters should be confirmed when purchasing 5501‑365?
A: Confirm whether your existing control system is MicroNet TMR or MicroNet Plus; confirm part‑number of paired I/O main board; confirm chassis model; verify field signal type is 4‑20mA or 0‑5V.
Q: Partial analog channels show no signal on faulty 5501‑365, how to troubleshoot?
A: Step1: Verify tight insertion of backplane connector; Step2: Measure 24VDC backplane supply voltage; Step3: Inspect field‑side loop wiring; Step4: Swap with another working 5501‑365 of same model to distinguish whether fault lies in FTM or upstream I/O main board.
Q: Is 5501‑365 applicable for 505 / 505XT controllers?
A: Not applicable. 5501‑365 is a component for large MicroNet rack‑based systems. 505/505XT are panel‑mount standalone controllers with completely different hardware architecture.
Popular Woodward Part Numbers
- 5466‑1247 5200CPU MicroNet TMR CPU Module
- 5466‑1511 MicroNet Plus P1020 CPU Module
- 5453‑279 MicroNet TMR Chassis
- 5453‑829 MicroNet Plus 8‑Slot Chassis
- 5501‑370 MicroNet TMR 24VDC Power Module
- 5466‑1105 High‑Density Combined I/O Board
- 5437‑523 Speed Sensor FTM Terminal Module
- 5501‑325 Discrete FTM Terminal Module
- 8200‑1200 LinkNet‑HT RTD Input Module
- 8273‑1013 2301E‑ST Steam Turbine Controller
- 8200‑1300 505 Steam Turbine Controller
- 8237‑2594 ProTech‑GII Overspeed Protection Device
- 8200‑1370 Vertex Compressor Controller
- 8440‑1855 easYgen‑2200 Generator Paralleling Controller
- 5501‑372 TMR High‑Density Analog FTM
Important Notes
- Take ESD protection and wear anti‑static wrist strap before installation of 5501‑365. Static discharge may cause latent internal circuit damage.
- Shield layers of all external analog field cables shall be single‑ended grounded. Do NOT ground both ends of shield, to avoid ground loop current degrading channel sampling accuracy of 5501‑365.
- 5501‑365 must be installed inside enclosed industrial control cabinets. Do not expose directly to outdoor environment, heavy dust or corrosive gas atmosphere.
- When replacing 5501‑365, disconnect external field signals first before backplane plug‑in / out operation to minimize system disturbance.
- Channel signal configuration requires GAP software; signal mode cannot be modified via hardware. Please complete configuration referring to Manual25182.
Product Tags
Woodward 5501‑365, 5501‑365, FTM Field Termination Module, MicroNet TMR, I/O Terminal Module, Analog Input‑Output Module, Steam Turbine Control Spare Parts, Gas Turbine Control System Parts, Turbomachinery Control Spare Parts, Woodward MicroNet Plus, Industrial Turbine Spare Parts
