Honeywell 16644994-001 | Digital I/O Module

Product Overview

The Honeywell 16644994-001 Digital Input/Output Module is engineered to interface discrete field signals with the Honeywell C300 controller platform within the Experion PKS distributed control system. The module enables dependable acquisition of digital status signals and execution of discrete control commands in mission-critical process environments.

Designed for continuous industrial operation, this module delivers electrically isolated I/O channels, robust diagnostics, and seamless mechanical and electrical compatibility with Honeywell C300 I/O assemblies. It is suitable for applications where reliability, signal integrity, and long-term availability are essential.

Functional Description

The Honeywell 16644994-001 supports configurable digital input and output functionality, allowing system designers to efficiently connect field devices such as limit switches, push buttons, proximity sensors, solenoid valves, and relay coils to the control system. The module communicates directly with the C300 controller backplane, ensuring deterministic signal processing and fast response times.

Integrated LED indicators provide immediate visual feedback on module health and individual channel status, simplifying commissioning, diagnostics, and maintenance activities.

Technical Specifications

Model / Part Number
16644994-001

Manufacturer
Honeywell

Module Type
Digital Input / Digital Output Module

Control System Compatibility
Honeywell Experion PKS with C300 Controller

I/O Channel Capacity
16 discrete channels
Channel allocation dependent on associated terminal assembly

Digital Input Characteristics
Nominal input voltage: 24 VDC
Input type: Sourcing / sinking (assembly dependent)
Debounce and filtering supported at controller level

Digital Output Characteristics
Nominal output voltage: 24 VDC
Output type: Discrete transistor or relay (assembly dependent)
Suitable for driving relays, solenoids, and discrete actuators

Electrical Isolation
Channel-to-channel isolation
Channel-to-backplane isolation

Diagnostics and Indication
Per-channel LED status indicators
Module health and communication LEDs

Environmental Ratings
Operating temperature: -40 °C to +70 °C
Relative humidity: 5% to 95% RH, non-condensing

Mechanical Format
Compact C300 I/O module form factor
Backplane-mounted, hot-swappable (system dependent)

Approximate Weight
1.2 kg

Key Engineering Features

High channel density supports efficient cabinet space utilization
Flexible digital input and output configuration through I/O assemblies
Industrial-grade isolation enhances noise immunity and system safety
On-board diagnostics reduce troubleshooting and downtime
Fully compatible with Honeywell Experion PKS architecture

Typical Application Areas

Process control systems for oil, gas, chemical, and refining facilities
Auxiliary control and monitoring in power generation plants
Discrete machine control in manufacturing and packaging lines
Plant-wide digital signal interfacing in large-scale DCS installations

Frequently Asked Questions

Q: Can this module be used outside the Experion PKS platform?
A: No. The 16644994-001 is specifically designed for Honeywell C300-based Experion PKS systems and is not compatible with third-party controllers.

Q: Are the I/O channels software configurable?
A: Channel behavior is determined by the associated terminal assembly and configured through Experion PKS engineering tools.

Q: Does the module support hot replacement?
A: Hot-swap capability depends on the system architecture and installation guidelines defined by Honeywell.