Honeywell CC-TDOD61 51307089-175 Experion Series C 12-inch Redundant Digital Output IOTA

Overview

Honeywell CC-TDOD61, part 51307089-175, is the 12-inch redundant IOTA for the Series C CC-PDOD51 digital output module.

Honeywell’s Series-C I/O specification pairs CC-PDOD51 with CC-TDOD51 for non-redundant installations and CC-TDOD61 for redundant installations. The listed output type is sink, with 0.1 A output current and 1000 V isolation.

Features

• Redundant System Architecture: Accommodates dual I/O modules on a single 12-inch assembly for hot-backup switchover with zero switchover gap time.
• 32-Channel Switching Capability: Delivers 32 discrete digital output channels engineered for open-drain (sinking) load control.
• Integrated Power Carrier Interface: Mounts directly to the 24 VDC system power bus carrier to supply operational power to the attached IOM and field circuits without external jumpers.
• Galvanic Isolation: Provides up to 1000 VAC RMS system-to-field isolation when using user-supplied external field power.
• Flexible Excitation Architecture: Supports configuration choices for internal system power or external field excitation.
• Detachable Terminal Blocks: Features two-level removable screw-terminal blocks accepting field conductors up to 12 AWG (2.5 mm squared).
• Thermal Management Design: Incorporates the Series C tilted vertical form factor to maximize cabinet packing density and promote vertical convection cooling.

Technical Specifications

Connections / Interfaces

Installation Guidelines

1. Pre-Installation Inspection: Unpack the IOTA and inspect the assembly for physical damage. Verify that the unit model number is CC-TDOD61 and confirm compatibility with the target CC-PDOD51 IOMs.
2. Mounting: Secure the 12-inch IOTA onto the Series C system cabinet mounting channel. Ensure all base retention screws are tightened to maintain ground continuity and connect to the 24 VDC power carrier bus.
3. Field Wiring Connection: Strip field wire ends appropriately and land discrete sinking load connections on the two-level detachable terminal block assemblies. Acceptable wire range is up to 12 AWG (2.5 mm squared).
4. Power Selection: Select internal power distribution or connect an isolated external 24 VDC field power supply according to system isolation requirements.
5. IOM Installation: Align and press the primary and redundant CC-PDOD51 Digital Output Modules into their respective IOTA guide slots until fully seated and latched.

Configuration and Replacement Guidelines

• Safe-State Configuration: Ensure the individual channel FAILOPT parameters (Hold Last Value or Shed to Safe State) are established in the C300 controller engineering repository prior to system commissioning.
• Hot-Swapping IOMs: On a redundant CC-TDOD61 assembly, an individual CC-PDOD51 module can be removed or inserted under power without interrupting field output operations on the active partner module.
• Maintenance Verification: Before servicing field devices or replacing connected loads, verify field supply voltage levels at the IOTA terminals using a calibrated multimeter.