I. Product Introduction

51309136-175 (Model MC-TAIH03) is a 16-channel high-level analog input FTA (Field Terminal Board) for the Honeywell UCN/Experion PKS/TDC3000 system. It is commonly known as HLAI FTA and is specifically used in combination with MU-PAIH03/MC-PAIH03 (HLAI IOP) high-level analog input cards. It is coated with three protection layers (Conformal Coated, CC), CE compliant, and suitable for harsh industrial environments such as damp, dusty, and slightly corrosive conditions.

II. Model Interpretation

51309136-175: Honeywell material code, used for procurement, inventory and maintenance traceability; the last ‑175 indicates the presence of three protection layers (CC) and CE certification.

MC-TAIH03: Product model, MC is the module prefix, TAIH = High-Level Analog Input, 03 is the sub-model; FTA refers to the field terminal board.

Comparison: 51309136-125 is the same model without three protection layers (non-CC) version.

III. Technical Parameters

Channel Quantity: 16 high-level analog input channels (single-ended / differential configurable).

Input Signals: 4–20 mA current, 1–5 VDC voltage, compatible with standard transmitters.

Terminal Type: Red compression terminals (Compression), resistant to vibration, reliable connection.

Isolation Characteristics: Electrical isolation between channels, between the field and the system side at 2500 VAC, resistant to common-mode interference and surges.

Coating: With three protection layers (Conformal Coated), moisture-proof, mold-proof, and salt fog-proof.

Compliance Certification: CE certification (compliant with EU EMC/LVD directives).

Operating Environment: Temperature ‑20 ℃ to +60 ℃, humidity 5%–95% without condensation; suitable for harsh industrial environments.

Mechanical Dimensions: 6 inches (152 mm) Size A standard DCS card, compact design.

Weight: Approximately 0.65 kg.

Redundancy Support: Non-redundant (Non-Redundant), when redundancy is required, use two FTA + two IOP.

IV. Interface and Communication Configuration

Field Side: 16 compression terminals for connecting pressure / flow / temperature / level transmitters, single-ended grounding of the shielding layer.

System Side: Special high-density connectors, directly connected to MU-PAIH03/MC-PAIH03 IOP cards, bidirectional signal transmission and conditioning.

Communication: Accessing the UCN network through the IOP card, supporting remote configuration, diagnosis, and data exchange; compatible with redundant IOP architecture.

V. Core Functions

Signal Conversion: 16 high-density centralized wiring, simplifying cabinet wiring, facilitating maintenance.

Signal Conditioning: Board-mounted RC filtering + isolation circuit, suppressing EMI/RFI interference, ensuring acquisition accuracy.

Environmental Protection: Three protection layers protect the circuit board and components, suitable for damp, dusty, and slightly corrosive scenarios.

Fault Diagnosis: Channel open circuit / short circuit detection, fault information uploaded to the upper computer, rapid problem location.

Line Protection: Built-in overcurrent / overvoltage protection, blocking abnormal signals from the field, protecting the IOP card and system.

Hot Swap: Supports online replacement, does not affect system operation, shortens downtime.

VI. Application Scenarios

Petrochemical, oil and gas, refining: Connecting HART / non-HART high-level transmitters to collect critical process parameters; Suitable for humid, dusty, and slightly corrosive workshops.

For power, water treatment, papermaking, and pharmaceutical industries: centralized collection of continuous production process analog signals, control rooms / field cabinets with poor environmental conditions.

Honeywell TDC3000/Experion PKS: Combined with MU‑PAIH03/MC‑PAIH03 cards to construct a high-density, highly reliable analog input system.

VII. Usage and Maintenance Instructions Instruction Manual

Installation: Insert into the standard Size A rack slot and lock it in place with the IOP card; supports hot swapping. Before installation, confirm that the slot is compatible.

Wiring: Connect the positive and negative terminals of the instrument to the corresponding terminals, press and secure to prevent loosening; single-ended shielded wire is grounded at one end to avoid circulating interference.

Configuration: Configure the channel range, signal type (4–20 mA/1–5 VDC), single-ended/differential mode on the engineer station, and download to start data collection.

Maintenance instructions

Regular inspection: Check the terminal fastening every quarter, check for corrosion or oxidation of the wiring, and ensure good contact of the connectors.

Environmental maintenance: Keep the cabinet dry and dust-free, with a temperature range of -20 ℃ to +60 ℃, and away from strong electromagnetic interference sources.

Fault handling: First check the wiring/grounding for abnormal signals, then check the connection between the connector and the IOP card; damaged components can be replaced online and the configuration re-downloaded.

Storage: Place the spare board cards in a cool and dry place, at -40 ℃ to +85 ℃, avoiding heavy pressure and severe vibration.

Note: The three-layer coating only prevents moisture / dust / minor corrosion, and should not be soaked or exposed to strong corrosive media for a long time.