5461-769 - 4-channel MicroNet Actuator Driver Module

TECHNICAL SPECIFICATIONS:

Part Number: 5461-769
Manufacturer: Woodward
Series: MicroNet / MicroNet Plus
Module Type: Actuator Driver
Number of Channels: 4 Channels
Output Current: 0–20 mA or 0–200 mA (Software Selectable)
Resolution: 12-Bit
Accuracy: 0.2% of full scale
Update Rate: 5 ms (All 4 channels)
Max Load Resistance: 600 Ω (at 20 mA) / 45 Ω (at 200 mA)
External Power: 18–32 VDC (24 VDC Nominal)
Isolation: 500 Vdc
Operating Temp: -30 °C to +65 °C
Availability: In Stock
Origin: United States

FUNCTIONAL DESCRIPTION:

The 5461-769 is a 4-Channel Actuator Driver Module designed for the Woodward MicroNet and MicroNet Plus platforms. This module serves as the critical output interface between the control system's digital logic and the physical actuators that govern fuel flow, steam valves, or vane positions. By providing precise proportional current outputs, the 5461-769 ensures smooth and accurate positioning of high-performance industrial actuators.

PRECISION ACTUATION AND CONTROL

Each of the four independent channels is capable of driving various industrial loads, from standard 4–20 mA positioners to higher-current 200 mA actuators. The 12-bit resolution provides the fine-grained control necessary to maintain tight tolerances in turbine speed and load regulation. This precision is essential for optimizing combustion efficiency and ensuring the stable operation of large-scale power generation units.

ROBUST PROTECTION AND NOISE IMMUNITY

Designed for the demanding electrical environments of power plants and industrial facilities, the 5461-769 features 500 Vdc of galvanic isolation. This barrier protects the MicroNet central processing unit and backplane from electrical noise, ground loops, and inductive spikes generated by actuator coils. The module's robust output stage is engineered to maintain high accuracy even across its full operating temperature range.

INTEGRATED DIAGNOSTICS AND SAFETY

The Actuator Driver Module includes comprehensive self-diagnostic capabilities. It continuously monitors the health of its internal circuitry and the integrity of the output loops. The module can detect Open Load or Short Circuit conditions in the field wiring, immediately reporting these faults to the CPU. This allows the control system to initiate failsafe routines or switch to redundant actuators, preventing unexpected downtime or equipment damage.

WHY BUY FROM WOC:

World of Controls is a leading provider of Woodward MicroNet components, offering the 5461-769 in both UNUSED and REBUILT conditions. Every driver module is rigorously tested on specialized MicroNet test benches to ensure precise current output and full diagnostic functionality across all four channels. Supported by a global logistics network and 24/7 technical expertise, WOC is your trusted source for high-integrity actuator control hardware.

FREQUENTLY ASKED QUESTIONS:

What is the Woodward 5461-769?

The 5461-769 is a 4-channel Actuator Driver module for the MicroNet system, used to provide the proportional current needed to drive fuel valves and other critical actuators.

What output ranges does this module support?

The module is software-selectable for either low-current (0–20 mA) or high-current (0–200 mA) applications, making it compatible with a wide variety of industrial actuators.

How does the module handle a disconnected actuator?

The internal diagnostics monitor the output loop; if a wire breaks or an actuator coil fails, the module detects an Open Load and flags a fault to the central processor.

Can this module be used for redundant actuator control?

Yes, in a MicroNet Plus architecture, these modules can be part of a redundant control scheme where multiple drivers manage critical fuel paths to ensure high system availability.