📄Description

The Woodward 9907-1106 is a digital/analog I/O terminal module designed for use in Woodward’s SPC(System Protective Control),MicroNet+,and legacy 2301A/505E-based turbine and engine control systems.It serves as the field wiring interface between the central controller and critical plant sensors/actuators—such as speed probes,pressure transmitters,servo valve drivers,and trip solenoids.

Unlike simple terminal blocks,the 9907-1106 integrates precision signal conditioning,galvanic isolation,overvoltage protection,and real-time diagnostics to ensure reliable operation in electrically noisy environments like power plants,oil rigs,and marine propulsion systems.

This module typically supports a mix of:

Analog inputs(e.g.,4–20 mA from pressure or temperature transmitters)

Analog outputs(e.g.,4–20 mA to hydraulic servo valves or fuel racks)

Discrete I/O(for alarms,trips,or status feedback)

It mounts into a standard SPC or MicroNet+chassis and communicates with the main CPU via a high-speed backplane bus,enabling millisecond-level response for critical control loops like speed regulation,load sharing,or emergency shutdown.

⚠️Note:The 9907-1106 is part of Woodward’s modular I/O ecosystem—it requires a compatible chassis(e.g.,9907-1001)and controller(e.g.,SPC II/III,MicroNet+CPU)to function.It is not a standalone device.

🏭Application Scenario

At a natural gas compressor station in Texas using Woodward 505E controllers with an SPC II protective system,frequent false trips were disrupting pipeline throughput.Root-cause analysis revealed degraded analog input modules causing drift in lube oil pressure readings.The site replaced aging 9907-1101 units with new 9907-1106 modules.The upgraded modules’enhanced common-mode rejection and dual-stage filtering eliminated noise from nearby VFDs.During commissioning,technicians used the onboard LEDs to verify live 4–20 mA signals without multimeters—cutting loop-check time by 40%.Over the next 18 months,zero nuisance trips occurred,and the station achieved 99.98%availability—critical for meeting FERC-mandated delivery contracts.

⚙️Technical Parameters

Parameter Value/Description

Model 9907-1106

Manufacturer Woodward Inc.(Fort Collins,Colorado,USA)

Platform Compatibility SPC II,SPC III,MicroNet+,2301A,505E(with I/O expansion)

Function Mixed-signal I/O terminal module(typically 8 channels)

Analog Input 4–20 mA or 0–10 VDC(configurable),16-bit resolution

Analog Output 4–20 mA sourcing/sinking(e.g.,for servo valves)

Discrete I/O 24 VDC inputs/outputs(isolated,wetted or dry contact)

Isolation Galvanic isolation per channel(≥1500 VAC)

Backplane Interface Proprietary Woodward high-speed bus(via SPC chassis)

Status Indication Per-channel LED(green=active,red=fault/off)

Field Terminals Screw-clamp,accepts 14–22 AWG stranded/solid wire

Shield Termination Integrated ground bar for cable shields

Operating Temperature-20°C to+70°C(industrial grade)

Certifications CE,UL,CSA,IEC 61000-6-2/6-4,RoHS

Dimensions~200 mm H×35 mm W×220 mm D(standard SPC module size)

Redundancy Support Yes–in dual-redundant SPC III/MicroNet+systems

💡Key Features&Advantages

Precision Control:High-resolution analog I/O ensures accurate fuel valve positioning and speed regulation.

Noise Immunity:Ideal for environments with large motors,switchgear,or RF sources.

Diagnostic Transparency:LEDs enable rapid troubleshooting during outages.

Backward Compatibility:Drop-in replacement for earlier 9907-110x series modules.

Safety Ready:Used in SIL2-rated overspeed and trip circuits when configured properly.

🔄Commonly Paired Components

Chassis:9907-1001(SPC base unit)

CPU:SPC III Controller,MicroNet+CPU Module

Power Supply:9907-1201 or 9907-1202

Communication:9907-1301(Modbus/RS-485 module)

Specialty I/O:9907-1110(High-Speed Counter),9907-1120(Thermocouple Input)

Actuators:Woodward PGA,E-GOV,or ProTech-M overspeed systems

🔧Installation&Maintenance Best Practices

Use shielded twisted-pair cable for all analog signals;ground shield at controller end only.

Torque terminal screws to 0.5 N·m to prevent intermittent connections.

Validate 4–20 mA loops with a HART communicator or precision calibrator during startup.

Keep spare 9907-1106 modules in inventory—these are mature but still supported.

Perform annual loop calibration to maintain turbine efficiency and emissions compliance.

✅Conclusion

The Woodward 9907-1106 exemplifies the company’s decades-long commitment to robust,precision-engineered control hardware for prime movers.While newer platforms like MicroNet+and ProTech GII offer advanced features,the 9907-1106 remains indispensable for sustaining thousands of gas turbines,steam turbines,diesel engines,and compressors worldwide—many operating in remote or safety-critical locations.

As legacy systems approach end-of-life,access to tested,verified spares and expert support becomes essential to avoid unplanned downtime or unsafe operating conditions.

🔎Migration Path:Consider upgrading to Woodward MicroNet+or EGCP-3 for enhanced cybersecurity,Ethernet connectivity,and IIoT integration—while reusing field devices where possible.

📞Contact us for new,refurbished,or tested 9907-1106 modules,cross-reference support,or assistance with turbine control system modernization.All units undergo full functional validation,isolation testing,and include a 24-month warranty.

选择深圳长欣，选择放心，售后无忧 大量现货，当天顺丰发货！！！