Woodward 5501‑372 TMR High Density Analog Combo I/O Module
Product Description
Woodward 5501‑372 is a high‑density analog combo I/O module under the MicroNet TMR platform, developed for fault‑tolerant critical control systems of steam turbines and gas turbines. Adopting Triple Modular Redundancy architecture, the 5501‑372 processes analog signal acquisition and output. It is rack‑mounted and responsible for receiving field analog sensor signals and driving actuator outputs. The 5501‑372 is mainly applied for system renovation and spare‑part replacement scenarios. It exchanges data with the MicroNet TMR controller backplane and can connect 4‑20 mA and voltage‑type industrial analog signals without additional external conversion boards. Under single‑point hardware fault conditions, the 5501‑372 maintains continuous system operation via 2‑out‑of‑3 voting logic to reduce shutdown risks. It is widely deployed in non‑interruptible processes such as power generation and oil‑gas compression.
Technical Specifications
| Part Number | 5501‑372 |
| Product Type | TMR High Density Analog Combo I/O Module |
| Compatible System | Woodward MicroNet TMR Control System |
| Architecture | Triple Modular Redundancy, 2‑out‑of‑3 voting mechanism |
| Signal Types | 4‑20 mA analog current, analog voltage, supports field transmitter signals |
| Mounting | Rack backplane slot installation |
| Power Supply | Backplane DC power supply |
| Operating Temperature | ‑40℃ ~ +70℃ industrial wide temperature range |
| Communication | Interacts with TMR core via chassis backplane bus, no independent external serial port |
| Diagnostics | On‑board channel self‑test, fault flag reported to controller |
| Configuration Tool | GAP engineering configuration software |
Core Advantages
- Triple‑redundant hardware architecture. Single‑channel or partial module faults will not directly trigger system trip, ensuring high‑availability operation.
- Integrated multi‑channel analog input and output. One single module implements signal acquisition and valve actuator driving, reducing module quantity inside chassis and saving rack slot resources.
- Hot‑swap maintenance supported. Module can be replaced while the system is online without interrupting unit process.
- Built‑in channel fault diagnosis. Wire break and signal over‑range can be rapidly located to shorten on‑site troubleshooting time.
- Fully compatible with the complete MicroNet TMR hardware ecosystem. For retrofit projects, it matches existing controller hardware logic and minimizes program modification workload.
Product Features
- Fully compliant with MicroNet TMR backplane bus protocol. Three independent signal processing channels perform parallel sampling and calculation; outputs are sent to field devices after hardware voting.
- Analog channels adopt basic noise suppression, suitable for industrial sites with heavy electromagnetic interference.
- Status LEDs on module front panel directly indicate module operation and channel fault status.
- Signal loops support connection with industry‑standard transmitters and proportional actuators, adapted for turbine control valves and compressor anti‑surge loops.
- Reinforced anti‑vibration hardware design, applicable to high‑vibration equipment rooms in power plants and oil‑gas stations.
- Module fault information is uploaded to system event log for convenient historical fault review by operation & maintenance staff.
Application Fields
Gas turbine control & protection systems, steam turbine fault‑tolerant control systems, compressor drive and anti‑surge control, combined heat and power generating units, oil‑gas production and pipeline compression stations, offshore platform power control systems, industrial critical unit retrofit & upgrade projects, TMR fault‑tolerant control system spare‑part expansion.
Product Comparison
5501‑372 is the TMR triple‑redundant variant, corresponding to simplex version 5501‑376. The 5501‑376 is deployed in non‑safety‑critical ordinary control cabinets without 2‑out‑of‑3 voting capability. Compared with the older 5466‑253 HD‑Combo module, 5501‑372 is an FTM companion board focusing on redundant signal voting; 5466‑253 integrates speed input plus analog combo channels and is mostly used for legacy 5009FT unit configurations. The newer 5466‑1115 speed‑analog combo module is a subsequent replacement hardware with updated architecture, yet its on‑board actuator driving capability differs from 5501‑372. GAP configuration review is mandatory for retrofits; direct swap is not allowed.
Related Matching Products
- 5466‑1247 MicroNet TMR CPU5200 Controller Module
- 5466‑1049 Kernel Expansion Rack Module
- 5501‑380 TMR System 120V Power Supply Board
- 5501‑381 TMR System 220V Power Supply Board
- 5466‑1250 Direct Expansion Interface Module
- 8200‑1250 CAN‑RTN Gateway Module
- 5466‑1347 Shared RTN Communication Board
FAQ
Q: Can 5501‑372 directly replace 5466‑253 module?
A: Direct hardware swap is not allowed. 5501‑372 is an FTM companion board while 5466‑253 is an HD‑Combo main module. Hardware definition and channel mapping differ. Please refer to hardware manual and modify GAP project configuration before replacement.
Q: Does 5501‑372 support hot‑swap?
A: Hot‑swap is available under complete MicroNet TMR fault‑tolerant system configuration; module replacement can be performed without unit shutdown. Hot‑swap is prohibited under simplex system environment.
Q: What configuration software applies to 5501‑372?
A: Woodward GAP software is used for channel parameter setup and logic download. Matching firmware version is required; communication errors may occur with version mismatch.
Q: How to troubleshoot when channel fault LED is lit on 5501‑372?
A: First, check wiring loops of field transmitters and actuators for short‑circuit or wire break. Second, check controller event log to locate fault points. Consider hardware wear‑out only if wiring status is normal.
Q: Can 5501‑372 be used in non‑TMR standard MicroNet Plus cabinet?
A: Not recommended. This module is hardware‑designed for triple‑redundant TMR architecture. Simplex cabinets cannot realize 2‑out‑of‑3 voting and will trigger abnormal functions.
Q: Does 5501‑372 come with terminal block?
A: No terminal block is included with the module body. Corresponding series terminal accessories are required for field cable connection.
Q: What are the core differences between 5501‑372 and 5501‑376?
A: 5501‑372 is for TMR triple‑redundant fault‑tolerant systems with three‑channel voting capability. 5501‑376 is a simplex high‑density analog module without redundant voting, deployed for ordinary non‑critical control loops.
Same‑Brand Product Part Numbers
- 5501‑376 Simplex High Density Analog Module
- 5501‑380 TMR Power Supply 120V Board
- 5501‑381 TMR Power Supply 220V Board
- 5466‑1247 MicroNet TMR CPU5200 Module
- 5466‑1250 Direct Expansion Module
- 5466‑1049 Kernel Expansion Rack Module
- 5466‑1115 Speed Analog Combo Module
- 5466‑1347 Shared RTN Communication Module
- 8200‑1250 CAN to RTN Gateway Module
- 5466‑253 HD‑Combo Analog I/O Module
- 5466‑316 Simplex HD‑Combo Module
- 5466‑1511 MicroNet Plus P1020 CPU Module
- 5466‑1246 Remote Transceiver Module
- 5501‑409 MicroNet Motherboard
- 8200‑1200 RTD Input Module
Precautions
- Take ESD protection during installation of 5501‑372; static electricity may damage on‑board chips.
- The module fits only designated slot positions of MicroNet TMR chassis; do not install into racks of other brands.
- Always verify REV hardware revision for spare‑part replacement; minor hardware differences exist across revisions.
- Fully back up original GAP project files for system upgrade & retrofit projects. Perform full‑channel signal test after replacement.
- The module cannot run standalone without TMR controller; joint commissioning with complete system is mandatory.
- Control temperature and humidity for long‑term storage to avoid circuit‑board moisture and oxidation.
Product Tags
Woodward 5501‑372,5501‑372 TMR module,High Density Analog Combo I/O Module,MicroNet TMR I/O board,Woodward turbine control module,5501‑372 analog input output,Triplex redundant I/O module,gas turbine control spare parts,steam turbine I/O module,5501‑372 FTM board
