Product Description

Model Definition

• 5130: TDC 3000/UCN DCS series.

• 4728: Digital Input FTA with galvanic isolation.

• 125: 16 channels, conformal‑coated PCB, gold‑plated screw terminals, 250 VAC isolation, redundant compatible.

Technical Specifications

• Channels: 16 single‑ended digital input channels.

• Signal Type: 24 VDC dry contact or active high/low signals.

• Isolation: 250 VAC RMS galvanic isolation (field‑to‑system).

• Terminals: Gold‑plated screw terminals (field side); 50‑pin ribbon connector (system side).

• Input Voltage: 24 VDC nominal, 18–30 VDC operating range.

• Current Draw: ≤10 mA per channel.

• Operating Temperature: -20°C to +60°C.

• Storage Temperature: -40°C to +70°C.

• Humidity: 5%–95% non‑condensing.

• PCB Coating: Conformal‑coated (for corrosive/dusty environments).

• Certifications: CE, UL, CSA, RoHS.

• Form Factor: Size B, weight approx. 1.2 kg.

Interface and Communication Configuration

• System Side: Connects to digital input IOPs (e.g., MC‑PDI02, 51304446‑150) via 50‑pin ribbon cable.

• Field Side: 16 gold‑plated screw terminals for 24 VDC devices (switches, relays, proximity sensors).

• Isolation: Full galvanic isolation eliminates ground loops and transient voltages.

• Redundancy: Supports dual‑module redundancy for high‑availability systems.

• Protocol: Passive FTA; no independent protocol. All processing/diagnostics via IOP and DCS.

Core Functions

• Provides 16‑channel isolated digital input termination for 24 VDC field devices.

• 250 VAC isolation protects DCS from electrical noise, ground faults, and voltage spikes.

• Conformal‑coated PCB ensures reliability in humid, corrosive, or dusty environments.

• Internal filtering and surge protection enhance signal stability and longevity.

• Gold‑plated terminals resist oxidation and vibration, ensuring consistent connections.

• Drop‑in compatible with TDC 3000/TPS/UCN/Experion PKS; hot‑swap capable.

Application Scenarios

• Systems: Honeywell TDC 3000, TPS, UCN, Experion PKS DCS.

• Industries: Oil & gas, chemical, petrochemical, power generation, pulp & paper, pharmaceuticals, offshore/coastal (high humidity/corrosion).

• Field Devices: Limit switches, pressure switches, level switches, proximity sensors, relay contacts.

• Installation: DCS control room cabinets, harsh‑environment local panels (corrosive, dusty, humid).

Usage and Maintenance Instructions

Usage

• Mount in standard DCS cabinet with adequate wiring clearance and airflow.

• Connect 50‑pin ribbon cable to matching digital input IOP; fully seat and lock.

• Wire field devices to designated terminals, observing polarity; tighten to 0.8–1.0 N·m.

• Power on DCS, verify no fault alarms, and confirm input status accuracy before commissioning.

Maintenance

• Keep environment clean, dry, and well‑ventilated; avoid direct moisture or chemical exposure.

• Inspect terminals and cables quarterly for tightness, corrosion, or damage; replace worn components.

• Clean coated PCB and terminals only with dry soft cloth; no liquids or abrasives.

• Store spares in anti‑static bags in cool, dry area.

• Use ESD protection during handling; do not disassemble.