Honeywell 51404109-175 MC-PRHM01 Analog Input Module

Product Overview

The Honeywell 51404109-175 MC-PRHM01 acquires high-precision analog signals from field transmitters. This module processes 8 differential input channels with configurable signal types. It converts process variables into digital values for the control system. The unit integrates seamlessly into Honeywell Series C and TDC 3000 architectures.

Technical Specifications

Parameter	Specification
Model Number	51404109-175 MC-PRHM01
Product Type	Analog Input Module
Number of Inputs	8 differential channels
Input Signal Types	4–20 mA, 1–5 VDC, RTD, thermocouple
Resolution	16 bits
Accuracy	±0.05% of span at 25°C
Temperature Drift	±25 ppm/°C
Input Impedance	250 Ω (current), >10 MΩ (voltage)
Common Mode Rejection	130 dB at 50/60 Hz
Sampling Rate	10 samples per second per channel
Power Dissipation	4.2 W typical
Operating Temperature	0°C to 60°C
Storage Temperature	–40°C to 85°C

Physical Dimensions and Mounting

This module measures 125 mm in height, 45 mm in width, and 160 mm in depth. The unit weighs approximately 0.40 kg. It mounts directly onto a standard DIN rail inside the cabinet. The front panel includes 8 LED indicators for channel status monitoring. These LEDs show input activity and fault conditions clearly.

Electrical Interface and Field Wiring

A 50-pin D-sub connector provides the primary interface for field wiring connections. The module accepts 4–20 mA, 1–5 VDC, RTD, and thermocouple inputs. You can configure each channel individually using the system software. The module includes cold junction compensation for thermocouple applications. This compensation ensures accurate temperature measurements across varying ambient conditions. Field devices like pressure transmitters, RTDs, and thermocouples connect directly to these terminals.

Performance and Signal Processing

The 51404109-175 MC-PRHM01 delivers 16-bit resolution for precise process measurement. The module samples each channel at 10 times per second for responsive control. It filters input signals to reject 50 Hz and 60 Hz electrical noise. The analog-to-digital converter maintains excellent linearity over the full range. Moreover, the module performs automatic zero and span calibration. This calibration routine compensates for temperature variations and component aging.

Installation and System Integration

You can install this module in any available I/O slot within the Series C chassis. The backplane automatically handles address assignment and power distribution. Always configure the input type using the configuration software before operation. For critical measurements, implement redundant modules to ensure continuous monitoring. Verify that the field wiring polarity matches the termination diagram. Use shielded twisted-pair cables for optimal noise rejection.

Environmental Compliance and Certification

This module carries CE marking and UL certification for industrial deployment. It also complies with RoHS and WEEE environmental directives. The conformal coating protects the PCB against moisture and airborne contaminants. This coating enhances long-term reliability in harsh plant environments.