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5415-856

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5415-856
May 18, 2026

5415-856

The Woodward 5415-856 is a digital microprocessor‑based controller and electro‑hydraulic (I/H) converter module for 505 / 505E / 505XT turbine governor systems. It integrates closed‑loop speed/load control, valve positioning, and hydraulic drive electronics into a single rack‑mount unit, serving as the primary interface between the governor and steam/gas turbine actuators.

Description

5415-856.jpg

The Woodward 5415-856 is a digital microprocessor‑based controller and electro‑hydraulic (I/H) converter module for 505 / 505E / 505XT turbine governor systems. It integrates closed‑loop speed/load control, valve positioning, and hydraulic drive electronics into a single rack‑mount unit, serving as the primary interface between the governor and steam/gas turbine actuators.

2. General Description

The 5415-856 combines a high‑precision analog output stage, dual solenoid drivers, MPU speed input, and field‑programmable control logic. It accepts 4–20 mA / 1–5 Vdc commands from the 505‑series governor, processes speed/position feedback, and drives hydraulic proportional or on‑off valves to regulate turbine speed, load, and overspeed protection. Designed for redundant, hot‑swap operation, it ensures high reliability in power generation, oil & gas, and industrial turbine applications.

3. Key Features

  • Integrated Controller & I/H Converter: Combines governor logic and hydraulic drive in one module

  • Dual Solenoid Outputs: For main throttle and governor valve control

  • MPU Speed Input: Magnetic pickup input for direct turbine speed sensing

  • 16‑bit Analog I/O: High‑resolution command/feedback signals (4–20 mA / 1–5 Vdc)

  • Closed‑Loop Control: Built‑in PID for valve position and speed regulation

  • 2500 V Galvanic Isolation: Protects against EMI/RFI and ground loops

  • Extended Temperature: −40 °C to +85 °C operating range

  • Hot‑Swap & Redundancy: Online replacement and redundant system support

  • Comprehensive Diagnostics: LED status + non‑volatile fault logging

  • Short‑Circuit/Overload Protection: On all I/O and drive channels

4. Technical Specifications

  • Model: 5415-856

  • Manufacturer: Woodward (USA)

  • Compatible Governors: 505, 505E, 505XT

  • Speed Input: 1 × MPU (magnetic pickup), 0–10 kHz

  • Analog Inputs: 2 ch (4–20 mA / 1–5 Vdc), 16‑bit

  • Analog Outputs: 2 ch (4–20 mA), 16‑bit

  • Digital Outputs: 2 × solenoid drivers (24 Vdc, 2 A max)

  • Communication: Modbus TCP/IP, PROFIBUS DP (diagnostics)

  • Power Supply: 24 Vdc ±10% (18–32 Vdc), 40 W max

  • Operating Temperature: −40 °C to +85 °C

  • Storage Temperature: −40 °C to +85 °C

  • Dimensions (W×H×D): 180 × 120 × 50 mm

  • Weight: Approx. 1.2 kg

  • Mounting: 19” rack or panel mount

  • Certifications: CE, RoHS, MIL‑STD‑810G

5. Applications

The 5415-856 is used as a complete control and drive package for Woodward governor systems in:

  • Power Generation: Steam/gas turbine speed/load control, main steam valve regulation, overspeed protection

  • Oil & Gas: Compressor drives, gas turbine generators, pipeline pumping stations

  • Industrial Turbines: Combined‑cycle plants, CHP systems, mechanical drive applications

  • Retrofits: Upgrading legacy turbine controls with integrated digital I/H converters

6. Ordering Information

  • Part Number: 5415-856

  • Description: Woodward 5415-856 Integrated Turbine Controller & I/H Converter Module


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