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5461-640 - 16-Channel Discrete Input Module is available in stock which ships the same day.
5461-640 - 16-Channel Discrete Input Module comes in UNUSED as well as REBUILT condition.
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TECHNICAL SPECIFICATIONS:
Part Number: 5461-640
Manufacturer: Woodward
Series: NetCon / MicroNet Architecture
Functional Designation: 16-Channel Discrete Input Module
Input Channel Density: 16 Independent Channels
Input Voltage Range: 18 to 32 VDC (24 VDC Nominal contact wetting)
Current Consumption: ~10 mA per channel at nominal voltage
Isolation Rating: 500 V RMS Channel-to-Chassis Optical Isolation
Input Filter Debounce Time: 4 to 8 milliseconds, hardware filtering
Enclosure Installation: Chassis rack system guide mount
Interfacing Connection: Backplane motherboard plug-in and front single multi-pin interface port
Environmental Protection: Standard industrial-grade circuit board assembly
Availability: In Stock
Country of Origin: USA
The 5461-640 is a high-density 16-Channel Discrete Input Module designed by Woodward for heavy-duty industrial governor tracking and turbine sequencing platforms, including the legacy NetCon and MicroNet control rack ecosystems. Populated with 16 independent, optically isolated channels, this board acts as an interface layer that reads digital On/Off status changes from field equipment, organizing these telemetry states directly into the central processing logic bus.
OPTICALLY ISOLATED CONTACT SENSING:
The primary function of the Discrete Input Module is to monitor external dry contact switches, pushbuttons, limit monitors, pressure states, and protective trip relays safely. The module utilizes an internal 24 VDC nominal wetting voltage to sense the state of each field contact. To shield sensitive central processor components from common-mode electrical noise and high-voltage field spikes, every channel features an optical isolation barrier rated up to 500 V RMS.
HARDWARE DEBOUNCE AND SIGNAL STABILIZATION:
To prevent electrical noise, contact chatter, or relay vibration from causing false status toggles in the central processing core, each channel on the 5461-640 is equipped with built-in hardware filtering networks. This integrated circuit array enforces a 4 to 8 millisecond debounce window, requiring an input state change to remain stable before it updates the processor memory register, ensuring reliable timing data during emergency event logs.
WHY BUY FROM WOC:
World of Controls is a specialized global authority in the lifecycle extension of legacy Woodward and GE turbine control equipment, providing the 5461-640 in both UNUSED and REBUILT conditions to eliminate operational latency. Our legacy quality-assurance protocol involves extensive multi-channel continuity checks, opto-isolator gate switching response validation, thermal load stability profiling, and static-safe industrial warehouse protection. By partnering with WOC, you secure reliable hardware solutions reinforced by 24/7 technical consultation and accelerated global logistics.
What is Woodward 5461-640?
The 5461-640 is a 16-channel Discrete Input Module developed by Woodward for NetCon and MicroNet control architectures. It acts as an interface that senses binary On/Off states from external field machinery, such as pressure switches, circuit breakers, and plant interlocks, and feeds that data to the main processor.
What is the purpose of the 500 V RMS isolation on this card?
High-voltage electrical plant fields are prone to inductive spikes, ground loops, and accidental shorts. The 500 V RMS optical-to-galvanic isolation ensures that electrical faults originating on external field wiring are stopped at the input terminal edge, preventing terminal damage to the backplane motherboard.
Does this module supply internal contact wetting voltage?
The Discrete Input Module is designed to operate with a 24 VDC nominal wetting loop to sense open or closed dry contacts in the field. When an external contact closes, current flows through the isolated channel opto-coupler circuit to register a logical "1" or "True" state.
Can this module directly process alternating current (AC) inputs?
The Discrete Input Module is built exclusively for direct current (18–32 VDC) input topologies. Monitoring 115 VAC or 230 VAC discrete switch loops requires an external relay interface board to step the line voltage down to a dry contact level before routing to this module.
