Product Overview

The Honeywell CC-TDOB11 (PN: 51308373-175) is a 32-channel Redundant Digital Output IOTA for Experion PKS Series C. It hosts a redundant pair of DO modules (typically CC-PDOB01) and distributes 24 V DC bussed power to field devices such as solenoid valves, relays, and indicators.

This IOTA ensures high availability: if one module fails, the redundant partner seamlessly takes over without interrupting field signals. G3 conformal coating protects against moisture, dust, and corrosive gases.

Technical Data

Key Features:

• “Soft Failure” Protection: Over-current shuts down only affected channel; generates alarm; other channels remain operational.

• Hot-Swappable: Modules can be replaced without interrupting other channels.

• Redundant Traffic Management: 10 ms switchover ensures zero current drop to field devices.

• Selective Powering: Terminal blocks allow choice of internal or external 24 V supply.

Typical Applications

• Refinery Safety Systems: Solenoid valves for ESD sequences.

• Chemical Processing: Pump relays and interlocks in batch production.

• Power Generation: Breakers and motorized dampers requiring redundant control.

• Oil & Gas Upstream: Subsea actuators and manifold valves in harsh environments.

FAQ

Q1: Difference between CC-TDOB01 and CC-TDOB11?
A1: CC-TDOB01 is non-redundant (single module, 9-inch); CC-TDOB11 is redundant (two modules, 12-inch).

Q2: Can this board handle 120 V AC outputs?
A2: No, strictly for 24 V DC. Use CC-SDOR01 or external interposing relays for AC loads.

Q3: What happens if external power wiring is reversed?
A3: Reversing external power can cause permanent damage. Always match positive and return screws on Terminal Block 3.

Q4: How many wires can be connected to each terminal?
A4: Terminal blocks support single or double wires (0.3–2.0 mm²); proper ferrules and neat wiring are recommended for 32-channel boards.