Description

The HONEYWELL 05701-A-0326 is a high-density digital output (DO) module engineered for Honeywell’s Total Plant Solution (TPS) and Experion PKS distributed control systems. Designed to drive field devices such as pilot lights, solenoid valves, motor starters, relays, and alarm horns, this 32-channel module converts controller logic signals into robust 24 VDC sourcing outputs capable of energizing industrial loads directly. As part of the widely deployed 05701-A I/O series, the HONEYWELL 05701-A-0326 delivers reliable actuation with built-in short-circuit protection and per-channel diagnostic feedback—ensuring safe and predictable control in demanding process environments.

Positioned as the complementary counterpart to digital input modules like the 05701-A-0325, the HONEYWELL 05701-A-0326 integrates seamlessly into standard TPS I/O carriers without requiring software reconfiguration or hardware jumpers. Its hot-swappable architecture allows for live replacement during plant operation, minimizing downtime in continuous processes such as ethylene cracking or steam turbine control. Over decades of global service, the HONEYWELL 05701-A-0326 has demonstrated exceptional durability and signal integrity, making it a preferred choice for plants extending the life of legacy TDC 3000 and TPS infrastructure while maintaining compliance with modern safety standards.

HONEYWELL 05701-A-0326

Technical Specifications

Main Features and Advantages

High-density, high-drive digital output capability: The HONEYWELL 05701-A-0326 provides 32 independent sourcing outputs in a single module slot, each capable of delivering up to 100 mA at 24 VDC—sufficient to directly energize small relays, LED indicators, or 24 VDC solenoid valves without external interposing relays. This reduces panel space, wiring complexity, and component count, lowering both capital and maintenance costs.

Robust protection and diagnostics: Each output channel on the HONEYWELL 05701-A-0326 features individual short-circuit protection with automatic recovery, preventing a single field fault from disabling the entire module. Status LEDs on the front panel indicate power, module health, and group-level output activity, enabling rapid troubleshooting during commissioning or operation. The module also reports fault conditions to the host controller via the backplane, supporting predictive maintenance strategies.

Seamless integration with Honeywell legacy ecosystems: The HONEYWELL 05701-A-0326 requires no configuration switches or software binding—it is automatically recognized by the TPS system upon insertion into a pre-configured I/O carrier. This plug-and-play behavior ensures fast spares deployment and simplifies system expansion. It maintains full compatibility with TDC 3000, TPS, and early Experion PKS platforms, allowing plants to standardize their DO strategy across multiple control generations.

Hot-swap support for continuous operation: Designed for mission-critical applications, the HONEYWELL 05701-A-0326 supports hot insertion and removal when used with compatible I/O carriers and system software. This enables maintenance teams to replace failed modules without shutting down the entire I/O rack—critical for industries like pharmaceuticals or power generation where unplanned stops can cost millions per hour.

Application Field

The HONEYWELL 05701-A-0326 is extensively used in process industries that require dependable, high-integrity actuation of field devices. In oil refineries, it drives emergency vent solenoids, pump start/stop relays, and area alarm beacons—executing safety logic from TPS controllers during abnormal events. Its ability to source current directly eliminates intermediate relay panels, reducing failure points in shutdown sequences.

In power generation facilities, the HONEYWELL 05701-A-0326 controls boiler fuel valve pilots, turbine lube oil pump starters, and annunciator panels. Utilities rely on its fast response time and electrical robustness to ensure precise timing during startup, synchronization, or trip scenarios. Similarly, in chemical plants, the module actuates batch sequence valves, agitator motors, and containment door locks—coordinating complex recipes with millisecond-level accuracy.

Water and wastewater treatment plants also deploy the HONEYWELL 05701-A-0326 to manage backwash cycles, chemical dosing pumps, and UV disinfection systems. Because these sites often operate unattended, the module’s self-protecting outputs prevent damage from wiring faults or moisture ingress. Across all these sectors, the HONEYWELL 05701-A-0326 serves as a critical execution layer—translating digital control decisions into real-world physical actions with unwavering reliability.

HONEYWELL 05701-A-0326

Related Products

• HONEYWELL 05701-A-0325: 32-channel digital input (DI) module; logical counterpart to05701-A-0326

• HONEYWELL 05701-A-0302: Earlier 32-channel DO module; similar function but with different output characteristics

• HONEYWELL 05701-A-0202: 16-channel analog output (AO) module; used for modulating control alongside05701-A-0326

• HONEYWELL 51304445-100: Standard I/O carrier (PM/SM); required housing for installing05701-A-0326 in TPS racks

• HONEYWELL 51401234-150: Redundant I/O power supply; ensures uninterrupted operation with05701-A-0326 modules

• HONEYWELL 05701-A-0402: High-current DO module (e.g., 500 mA/channel); for heavier loads not suited to05701-A-0326

• HONEYWELL 51103387-200: Network Interface Module (NIM); connects I/O chassis containing05701-A-0326 to LCN