Description
Product Description
The Honeywell 51401235-100 Analog Input Module is an industrial-grade signal acquisition card developed for Honeywell Distributed Control Systems, particularly the TDC 3000 and Experion PKS platforms.
This module is designed to capture multiple analog process signals from field instruments and convert them into high-resolution digital values that can be processed by the control system. Through integrated signal conditioning and isolation circuitry, it ensures reliable measurement performance in electrically noisy industrial environments.
The 51401235-100 module enables stable monitoring of key process variables such as temperature, pressure, flow rate, and level, supporting critical automation tasks in process industries where measurement accuracy and long-term stability are essential.
Technical Specifications
| Parameter |
Description |
| Model |
51401235-100 |
| Manufacturer |
Honeywell |
| Module Type |
Analog Input Module |
| Compatible Systems |
Honeywell TDC 3000 / Experion PKS |
| Input Channels |
Up to 8 analog input channels |
| Supported Signal Types |
4–20 mA current, voltage signals, thermocouple, RTD |
| A/D Conversion |
12-bit to 16-bit configurable resolution |
| Measurement Accuracy |
±0.1% of full scale |
| Input Isolation |
Channel-to-channel and channel-to-system isolation |
| Power Supply |
24 VDC via system backplane |
| Operating Temperature |
−20 °C to +60 °C |
| Storage Temperature |
−40 °C to +85 °C |
| Installation Type |
Rack / chassis mounted module |
| Dimensions |
240 × 150 × 40 mm |
| Weight |
2 kg |
Key Functional Characteristics
High-precision analog signal acquisition
The module performs signal conditioning and filtering before analog-to-digital conversion, ensuring stable readings even when connected to long field instrument loops.
Multi-signal compatibility
Supports several industrial measurement signal types, allowing integration with transmitters, thermocouples, and RTD sensors without additional converters.
Electrical isolation protection
Independent isolation between channels and system circuitry helps prevent signal interference and protects the control system from ground loops or voltage spikes.
Seamless DCS integration
Designed specifically for Honeywell DCS environments, enabling efficient communication with controllers and operator stations within the TDC 3000 and Experion PKS architecture.
Compact industrial module design
The card-style format simplifies installation and replacement in control system racks or cabinets.
Typical Industrial Applications
Oil and Gas facilities use the module for pressure, flow, and level signal acquisition across pipelines and processing units.
Chemical and petrochemical plants rely on the module to capture reactor temperature and process pressure data for real-time control.
Power generation facilities deploy it for turbine monitoring, boiler instrumentation, and balance-of-plant control systems.
Food, pharmaceutical, and batch manufacturing industries apply the module in precise temperature and process variable monitoring.
FAQ
What signals can the 51401235-100 module accept?
It supports standard industrial analog inputs including 4–20 mA current loops, voltage signals, thermocouple inputs, and RTD temperature sensors.
Is this module compatible with Experion PKS systems?
Yes. It is designed primarily for TDC 3000 systems but can also be used within compatible Experion PKS architectures depending on system configuration.
Does the module require external power?
No. The module receives 24 VDC power directly from the DCS backplane.
How many field signals can it handle simultaneously?
The module typically supports up to eight analog input channels depending on configuration.
