Woodward 8280-500 Digital Control Module

Overview

The Woodward 8280-500 is part of the powerful 723 Digital Control series. Engineers designed it to manage speed and load in large prime movers such as gas turbines, steam turbines, and reciprocating engines. It ensures reliable, safe, and efficient control in critical industrial applications. This controller excels in demanding environments. It integrates advanced I/O, robust communication protocols, and intelligent diagnostics for smooth operation and maintenance. Furthermore, it supports hot-swappable modules, allowing quick replacement without downtime.

Technical Specifications

Model

• 723 Digital Control (Model: 8280-500)

Power Supply

• Low Voltage: 18–40 VDC (nominal 24 or 32 VDC)

• High Voltage: 90–150 VDC (nominal 125 VDC)

• Power Consumption: 40 W nominal

Inputs

• Multiple digital inputs

• Analog inputs: 4–20 mA or 1–5 VDC (application-dependent)

Outputs

• Analog Outputs: 0–1 mA, 4–20 mA, 0–20 mA, or 0–200 mA

• Max Load:

• 600 Ω for 0–1 mA, 4–20 mA, and 0–20 mA

• 70 Ω for 0–200 mA

• Accuracy: ±0.5% of full scale

• Relay Contact Outputs:

• 2.0 A @ 28 VDC resistive

• 0.5 A @ 125 VDC resistive

Communication Interfaces

• Serial Ports: 2 ports (Modbus® and Servlink supported)

• Programming Port: Watch Window or handheld programmer

• Protocols Supported: Modbus, RS-232, RS-422, RS-485, LON

Environmental Ratings

• Operating Temp: –40°C to +70°C (–40°F to +158°F)

• Storage Temp: –55°C to +105°C (–67°F to +221°F)

• Humidity: 95% RH @ +20 to +55°C

• Vibration: Meets Lloyd’s Register Spec Test 1

• Shock: US MIL-STD 810C, Method 516.2, Procedures I, II, V

• EMI/RFI: Complies with industrial EMC standards

Mechanical

• Dimensions: 16.25" W × 11.5" L × 2.375" H
  (41.28 cm × 29.21 cm × 6.04 cm)

• Weight: 3.2 kg

Certifications

• SIL-3 (IEC61508) certified

• API 670 / 612 compliant

Additional Features

• Redundant Trip Relays: Ensures fail-safe shutdown

• Hot-Swappable Design: Replace modules without stopping the system

• Self-Diagnostics: Monitors system status and logs faults

• Flexible I/O: Adapts to wide industrial needs

• Digital Speed Control: Maintains precise engine speed