Model Number Explanation

4DP7: TDC 2000 analog output board family

APX: Analog output, isolated, 4–20 mA

OA: Output assembly

311: Revision/configuration variant

Technical Specifications

Output Type: Isolated analog current

Signal Range: 4–20 mA (standard)

Channels: Multi‑channel (TDC 2000 slot format)

Accuracy: ±0.1% full scale (typical)

Isolation: Channel‑to‑backplane isolation

Power: 24 VDC (system backplane)

Operating Temp: 0°C to +60°C

Weight: ≈0.42 kg (0.93 lbs)

Form Factor: TDC 2000 standard slot PCB

Certifications: CE, UL, CSA (legacy)

Interface & Configuration

Connector: Edge‑card connector (TDC 2000 backplane)

Configuration: Via TDC 2000 system software (range, failsafe)

Diagnostics: On‑board fault monitoring for open/short circuits

Mounting: Installs directly into TDC 2000 I/O rack slots

Key Features

Isolated 4–20 mA: Reduces ground loops and electrical noise

High Stability: Precision components for consistent process control

TDC 2000 Native: Direct fit into legacy DCS racks

Diagnostic Monitoring: Simplifies maintenance and troubleshooting

Long‑Term Reliability: Industrial‑grade for continuous operation

Applications

Systems: Honeywell TDC 2000 DCS (HL, PIU, MFC)

Industries: Oil & gas, chemical, power generation, petrochemicals

Use Cases: Control valves, positioners, analog indicators, loop tuning

Compatibility

Racks: TDC 2000 series I/O racks

Controllers: TDC 2000 process controllers

Replacement: Direct replacement for 4DP7APXOA‑311 variants