Technical Specifications

• Part Number: 51304481-100 (51304481100)

• Module Type: MU‑PAIL02, Low‑Level Analog Input IOP (LLAI)

• Channel Configuration: 8 × differential input channels (single‑ended selectable)

• Signal Types: Millivolt (mV), RTD (PT100/PT1000), thermocouple (J/K/T/E/R/S/B)

• Input Ranges: ±25 mV, ±50 mV, ±100 mV, 0–100 mV; PT100: ‑200°C to +850°C

• Isolation: Channel‑to‑backplane 1500 VAC rms isolation; channel‑to‑channel isolation

• Resolution: 16‑bit per channel

• Accuracy: ±0.02% FS at 25°C; ±0.05% FS over operating range

• Scan Rate: 8 samples/second per channel

• Power Supply: 24 VDC ±10%, 0.5 A (UCN backplane‑powered)

• Operating Temperature: 0°C to +60°C

• Storage Temperature: ‑40°C to +85°C

• Humidity: 5%–95% RH, non‑condensing

• Dimensions (H×W×D): 130 × 35 × 110 mm (UCN IOP form factor)

• Weight: ~0.45 kg

• Certifications: UL‑listed, CE‑compliant

• Connectors: UCN 96‑pin edge connector (backplane); 50‑pin ribbon cable to FTA

• Status Indicators: Power LED, fault LED, channel status LEDs

Interface & Communication Configuration

• DCS Interface: UCN backplane (1 Mbps, TDC3000/TPS/Experion PKS compatible)

• FTA Interface: 50‑pin ribbon cable to RTD/TC FTAs (e.g., 51304477‑100/150)

• Diagnostics: On‑board self‑diagnostics; per‑channel open/short circuit detection; FTA fault monitoring

• Wiring: Differential pairs (twisted shielded cable recommended for mV signals)

• Redundancy: Supported (dual IOPs in hot standby, shared FTA)

Core Functions

1. 8‑Channel Low‑Level Acquisition: Precision differential input for mV/RTD/TC signals.

2. High‑Resolution Signal Conditioning: 16‑bit ADC, amplification, filtering, and cold‑junction compensation (TC).

3. High Isolation: 1500 VAC channel‑to‑backplane isolation for harsh electrical environments.

4. Redundancy Support: Hot‑standby redundant IOP configuration for critical applications。

5. Backplane‑Powered: Eliminates external power supplies; draws power from UCN backplane.

6. FTA Compatibility: Works with 51304477 series RTD FTAs and 51304476 series TC FTAs.

Application Scenarios

• Process Industries: Chemical, petrochemical, power generation, pulp & paper (precision temperature measurement).

• Sensor Interfacing: PT100/PT1000 RTDs, J/K/T/E thermocouples, and low‑level mV transmitters.

• Legacy DCS Systems: Replacement/expansion for TDC3000/TPS needing 8‑channel low‑level analog input.

• Redundant Control Loops: Critical processes requiring high availability (e.g., reactor temperature control).

Compatibility Note

• System Compatibility: Honeywell TDC3000/TPS and Experion PKS (via UCN).

• FTA Compatibility: 51304477‑100/150 (RTD FTA), 51304476‑100/125/175 (TC FTA).

• Key Difference from 51304477 Series: 51304481‑100 is the IOP (processor module); 51304477 series are FTAs (field termination assemblies).