Honeywell CC-TDOB01 Series C Isolated Digital Output IOTA Terminal Board For Experion PKS C300 C200 DCS

Manufacturer: Honeywell Process Solutions

Part Number: CC-TDOB01 (Digital Output IOTA Termination Assembly, Series C I/O rack base board)

Product Type: IOTA field termination terminal board, matched with CC-DO01 digital output IOM module, relay contact signal wiring carrier

Matching Platform: Honeywell Experion PKS DCS, C200 / C300 process controller, Series C I/O rack, FTE fault-tolerant Ethernet control network

Core Function: 16-channel isolated relay terminal wiring interface; 1 Form C SPDT relay contact per channel (NO/NC common); built-in channel short-circuit & overcurrent protection; 2500V RMS full-channel electrical isolation; per-channel LED status indication; on-board field power distribution terminal; hot-swap compatible with IOM module; EMI multi-stage surge filtering; vertical cabinet rack mounting design; IPC-CC-830 conformal coated PCB for power & petrochemical harsh environments

1. Product Overview

CC-TDOB01 is a dedicated IOTA field termination terminal board belonging to Honeywell Series C I/O subsystem, perfectly matched with CC-DO01 digital output IOM module for Experion PKS distributed control system. It acts as the physical wiring bridge between DCS control cabinet IOM card and on-site actuators, responsible for routing all 16 channels of relay switching output signals to field solenoid valves, auxiliary contactors, alarm horns, pump/motor starters and on-off valves. Each channel adopts independent 1 Form C SPDT relay contact structure, supporting both normally open and normally closed signal switching, compatible with 24VDC low-voltage control and 250VAC industrial auxiliary power loads. Full-channel 2500V RMS photoelectric + relay dual isolation thoroughly eliminates ground loop drift and high-voltage surge interference from field wiring, effectively protecting the core IOM controller circuit from burnout caused by miswiring short-circuit. Integrated multi-level overcurrent and short-circuit hardware protection, automatic channel cut-off when load current exceeds 5A instantaneous, fault signal uploaded to C300 controller via I/O bus for real-time upper HMI alarm. Each channel is equipped with independent status LED light, directly displaying relay pull-in/release state for rapid on-site maintenance troubleshooting without external measuring instruments. Vertical tilt mechanical design optimizes cabinet internal heat dissipation, uniform air flow avoids local overheating; supports full hot-swap operation of matching CC-DO01 IOM module without cutting off cabinet field power supply. The PCB adopts full anti-corrosion conformal coating, stable long-term operation in high-dust, high-humidity and trace corrosive gas environments of thermal power plants, oil refineries and chemical plants. It cannot work independently and must be inserted into Series C I/O rack and paired with CC-DO01 digital output IOM module to complete signal output control. This IOTA terminal board is standard spare wiring base hardware for Experion PKS DCS control cabinets, widely used for cabinet reconstruction, I/O channel expansion and routine field wiring fault replacement maintenance.

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