Product Overview
Woodward 5441‑413 is a dedicated relay interface hardware for Woodward 505 and 505E digital turbine governor control platforms. It serves as the electrical signal‑isolation interface between the main turbine controller and field‑level discrete devices. Low‑power logic signals from the main controller drive on‑board relay contacts to execute trip commands, alarm outputs and auxiliary‑equipment interlock control. It isolates sensitive controller internal circuits from harsh field‑side electrical noise and surge transients inside turbine‑control cabinets. Widely stocked as original spare‑part hardware for maintenance and retrofit of legacy steam‑turbine and gas‑turbine power‑generation control installations.
Series
5441‑413 belongs to Woodward 5441 auxiliary‑interface hardware family for the 505 / 505E turbine‑governor platform. Related part numbers include 5441‑409 and other relay‑interface variants. These interface modules extend discrete I/O capacity for turbine control systems, handling trip, alarm and auxiliary‑interlock signals without modifying the main controller core unit.
Product Features
‑ Multi‑channel electromechanical relay output for field solenoid valves, trip relays and alarm annunciators ‑ Galvanic electrical isolation between turbine‑controller internal circuits and field‑wiring loops ‑ Optimized for 24 VDC turbine‑control cabinet auxiliary‑supply environment ‑ High‑vibration industrial hardware design for continuous operation in power‑generation turbine‑cabinet conditions ‑ Chassis‑mount form factor for installation inside Woodward turbine‑control cabinet assemblies ‑ Interfaces with 505 / 505E main controller via proprietary internal system bus ‑ On‑board status LED indicators for channel‑level diagnostic feedback ‑ Protects main controller electronics against field‑side surge and noise interference ‑ Direct drop‑in replacement for original 5441‑413 units for field‑site maintenance work
Product Parameters
‑ Part Number: 5441‑413 ‑ Power Supply: 24 V DC (turbine‑control cabinet auxiliary supply) ‑ Signal Interface: Internal proprietary bus to 505 / 505E controller ‑ Output: Isolated relay contact outputs for field‑device switching ‑ Operating Temperature: ‑20 °C ~ +60 °C ‑ Storage Temperature: ‑40 °C ~ +85 °C ‑ Relative Humidity: 5‑95 %, non‑condensing ‑ Mounting: Chassis‑mount inside turbine‑control cabinet ‑ Protection Rating: IP20 (cabinet‑internal use only) ‑ Approvals: Designed for power‑generation turbine‑control applications
Product Specifications
‑ Form Factor: Full assembled chassis‑mount relay‑interface module ‑ Signal Processing: Relay‑contact isolation and switching for discrete turbine‑control signals ‑ Compatibility: Woodward 505 and 505E digital turbine governor systems ‑ Diagnostic: Front‑panel LED status indication ‑ Cooling: Natural convection ‑ Weight: Approx 1.5 kg ‑ Maintenance: Direct swap‑out spare module for turbine‑control‑system repair
Function
5441‑413 receives discrete control commands sent over the internal bus from the 505 / 505E main turbine controller. Internal relay coils are energized to switch dry‑contact outputs, which drive external field‑site devices such as trip relays, alarm lamps and solenoid valves for turbine protection and auxiliary‑interlock logic. Built‑in galvanic isolation blocks electrical surges and noise from field wiring, preventing damage to the main turbine‑governor electronics. LED indicators provide visual channel‑status feedback for on‑site troubleshooting during commissioning and fault‑handling events.
Purpose
Provide isolated relay‑contact interface between Woodward 505/505E turbine controllers and field‑side discrete equipment. Replace defective 5441‑413 modules to restore turbine trip‑output, alarm‑signal and auxiliary‑interlock functions. Used for spare‑part stocking and maintenance of legacy Woodward‑governor‑based power‑generation turbine installations.
Application Fields
Steam‑turbine and gas‑turbine power‑generation units, combined‑cycle power plants, industrial turbine gen‑sets, refinery prime‑mover control systems, turbine ESD auxiliary‑signal processing, legacy Woodward 505 / 505E control‑system maintenance and retrofit projects.
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