Description
Product Description
The 51401288-200 (24VDC) from Honeywell is an industrial-grade digital output control board designed for integration with Honeywell Distributed Control Systems, particularly the TDC 3000 architecture and compatible Experion PKS platforms.
This board functions as a switching interface between the control system and field devices. It converts digital commands issued by the controller into electrical output signals capable of driving relays, actuators, solenoids, and other discrete control equipment.
Built on the HPK2-2 hardware platform, the module is engineered for high reliability in continuous industrial environments. Channel isolation and robust electrical protection help maintain stable signal transmission while protecting both the controller and connected equipment from electrical disturbances.
The compact PC board form factor enables installation in Honeywell system cabinets where space efficiency and modular expansion are required.
Technical Specifications
| Parameter |
Specification |
| Manufacturer |
Honeywell |
| Model |
51401288-200 |
| Hardware Series |
HPK2-2 |
| Board Type |
Digital Output Control Board |
| Output Channels |
16 discrete digital outputs |
| Output Signal Type |
24 VDC logic / relay drive |
| Output Voltage Range |
18–30 VDC |
| Maximum Output Current |
Up to 0.5 A per channel |
| Isolation |
Channel-to-channel and channel-to-system electrical isolation |
| Response Time |
Typical switching < 10 ms |
| Operating Temperature |
-20°C to +60°C |
| Storage Temperature |
-40°C to +85°C |
| Supply Requirement |
24 VDC system power |
| Mounting |
Honeywell DCS cabinet slot installation |
| Dimensions |
240 × 150 × 40 mm |
| Weight |
3.20 lbs |
Functional Characteristics
The 51401288-200 digital output board supports simultaneous control of multiple field devices through sixteen discrete output channels. Each channel can deliver sufficient current to drive relays or other low-power actuators commonly used in process control environments.
Electrical isolation between channels reduces the risk of signal interference and prevents fault propagation across circuits. This design improves system stability when operating in electrically noisy industrial facilities such as refineries or power plants.
The board architecture also supports fast switching performance, ensuring prompt execution of control commands within the DCS environment.
Typical Industrial Applications
Oil and gas production facilities often use this module to control pumps, valve actuators, and shutdown interlock systems.
In chemical and petrochemical plants, the board is typically responsible for driving control relays and solenoid valves associated with process equipment.
Power generation facilities deploy the module for turbine auxiliary control, boiler equipment switching, and alarm-driven shutdown circuits.
Manufacturing automation environments use the module for machine interface control and discrete equipment operation.
System Compatibility
The 51401288-200 board is designed for installation within Honeywell DCS infrastructure, including:
Honeywell TDC 3000 control systems
Honeywell Experion PKS platforms (via compatible I/O infrastructure)
Before installation, the module configuration should be verified within the system engineering database to ensure compatibility with controller firmware and cabinet backplane configuration.
FAQ
What devices can the 51401288-200 control?
It is commonly used to operate relays, solenoid valves, contactors, indicator lamps, and other discrete field devices requiring 24 VDC control signals.
Is this board hot-swappable in Honeywell cabinets?
In most installations, removal or insertion should be performed during system maintenance windows unless the cabinet and controller configuration specifically support hot swapping.
How does it differ from analog output modules?
The 51401288-200 provides discrete ON/OFF switching signals, while analog output modules deliver continuous variable signals such as 4–20 mA or 0–10 V used for process control.
