MC-PAIH03 Honeywell Experion PKS High Level Analog Input Block
Manufacturer: Honeywell
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Part Number: 51304754-176
Condition：New with Original Package
Product Type: Universal Control Network
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The Honeywell 51304754-176 (Model Reference: MC-PAIH03) operates as an industrial-grade, 16-channel High Level Analog Input (HLAI) Input/Output Processor (IOP) module built for the Honeywell Universal Control Network (UCN), Process Manager (PM), Advanced Process Manager (APM), High Performance Process Manager (HPM), and integrated Experion PKS architectures. This standard Size A board processes continuous-variable electrical feedback from critical plant instrumentation. Control engineers deploy this high-precision processor card to ingest, scan, and digitize raw 4-20 mA current loops and 1-5 VDC voltage signals originating from multi-variable transmitters, pressure sensors, and flow meters.
Technical Specifications
| Parameter | Specification Value |
| Manufacturer | Honeywell |
| Model Number | 51304754-176 |
| Model Reference / MPN | MC-PAIH03 (PM-AI Motherboard Architecture) |
| Circuit Board Assemblies | PWB 51307686-106 / ASSY 51307687-176 |
| Component Type | High Level Analog Input (HLAI) Input/Output Processor |
| System Infrastructure | Honeywell UCN, PM, APM, HPM, and Experion PKS Nodes |
| Input Channel Density | 16 fully differential analog input channels |
| Supported Signal Types | 4-20 mA current loops, 0-20 mA current signals, 1-5 VDC / 0-10 VDC inputs |
| Maximum Input Voltage Limit | Up to plus/minus 30 VDC continuous without hardware damage |
| Data Converters / Resolution | 16-bit analog-to-digital converter array |
| Signal Input Scan Rate | 4 samples per second per channel (all 16 channels sampled in 250 ms) |
| Hardware Measurement Accuracy | Plus/minus 0.075% of full-scale span at standard 23.5C |
| Normal Mode Filter Profile | Single-pole RC analog filter, -3 dB attenuation at 1 Hz |
| Common Mode Rejection Ratio | 70 dB minimum from DC to 60 Hz |
| Channel-to-Channel Crosstalk Isolation | 60 dB attenuation from DC to 60 Hz |
| Environmental Protection | Factory G3-harsh rated conformal coating |
| Physical Module Form Factor | Standard Size A card profile |
| Net Hardware Weight | 0.58 kg to 0.80 kg (1.28 to 1.76 lbs) |
| Operating Thermal Limits | -40 to +70 degrees Celsius |
| Global Industry Validations | CE marked, UL listed, RoHS compliant |
| Procurement Supply Profile | 100% Brand New and Original in Factory Packing |
Engineering Advantages
G3-Hardened Conformal Coating Overcomes Corrosive Plant Environments
Modern industrial plants often subject control cabinets to high humidity and corrosive chemical gasses. The 51304754-176 features a factory-applied, uniform plastic film conformal coating across the entire printed wire board (PWB) assembly. This barrier isolates delicate trace pathways and micro-solder points from moisture, sulfur compounds, and airborne salt particles. The protective layer elevates the hardware profile to ISA-S71.04 G3 harsh atmospheric compliance, allowing control engineers to mount the I/O rack closer to heavy chemical processing areas to minimize field wiring costs.
Differential Input Topology Extinguishes Heavy Industrial Ground Loops
In expansive processing facilities, remote field transmitters frequently reference local earthing points that exhibit distinct electrical potential variances from the central PLC control panel. The MC-PAIH03 utilizes 16 true differential input channels rather than single-ended common-ground paths. By measuring exclusively the voltage delta between the positive and negative signal terminals, the internal instrumentation amplifiers reject common-mode noise up to 70 dB and block stray earth loop currents, preserving signal accuracy amid massive plant machinery cycles.
Single-Pole RC Analog Filtering Stabilizes Jittery Process Values
Turbulent fluid flows, pipeline pulsations, and proximity to alternating current (AC) power grids can introduce erratic high-frequency ripples into analog sensor signals. The 51304754-176 combines a single-pole low-pass RC analog hardware filter (-3 dB cutoff at 1 Hz) with a fast 16-bit analog-to-digital converter. This hardware pairing filters out transient spikes, high-frequency line chitter, and 50/60 Hz induction noise, outputting smooth, highly accurate data streams that allow downstream PID loops to adjust control valves precisely.
FAQs
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Which field termination assemblies (FTAs) interface directly with the 51304754-176 input board?
The MC-PAIH03 IOP interacts seamlessly with a wide range of standard Honeywell high-level analog input termination hardware blocks. Compatible field termination assemblies include the MU-TAIH02, TAIH12, TAIH52, TAIH03, TAIH13, TAIH23, TAIH53, TAIH22, and TAIH62 modules, facilitating easy adaptations for both 2-wire loops and self-powered transmitters.
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What does the "-176" suffix track in the Honeywell part number nomenclature?
The "-176" suffix indicates two specific manufacturing modifications: full factory conformal coating for environmental hardening (G3 harsh rating protection) and full compliance with standard global RoHS environmental directives. It provides functional drop-in backward-compatibility with older non-coated "-150" module iterations while offering vastly superior chemical corrosion tracking resistance.
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How many field wires must an instrument technician land for each input channel?
Because the 51304754-176 utilizes true differential input paths, each of the 16 channels requires two separate signal wires (Positive and Negative) landed at the corresponding field termination block terminal screws. Ensure you ground the external twisted-pair wire shields exclusively at the designated panel ground bar to maintain optimum noise shield performance.