Honeywell CC-TDOD51 Experion Series C Non-Redundant Digital Output IOTA

Description

The Honeywell CC-TDOD51 is a non-redundant Digital Output Input Output Termination Assembly (IOTA) designed for the Experion Series C platform. It serves as the physical field termination interface for the CC-PDOD51 24VDC sink-type digital output module, allowing process control signals to interface directly with actuators, solenoid valves, and interposing relays.

Operating within the Honeywell C300 controller architecture, the CC-TDOD51 provides streamlined signal distribution and terminal connection points without requiring external marshalling. Field wiring attaches directly to the two-level detachable terminal block, which accepts wiring up to 12 AWG (2.5 mm squared).

The assembly features conformal coating to withstand harsh industrial environments and incorporates electronic overcurrent protection. By distributing power across the bused backplane and housing the CC-PDOD51 output module, the assembly delivers reliable control switching for discrete automation circuits.

Features

• Dedicated Sink Architecture: Specifically engineered for 32-channel 24VDC open-drain (sink) digital output operations.
• Compact Footprint: Compact 9-inch (228 mm) non-redundant form factor optimizes enclosure space.
• Conformal Coating: Standard board protection against moisture, dust, and aggressive industrial environments.
• Detachable Terminations: Two-level detachable screw terminal blocks simplify initial installation, testing, and field maintenance.
• Integrated Power Distribution: Receives 24VDC power directly through the bused IOTA carrier, eliminating extra field power wiring.
• Galvanic Isolation: Offers 1000 VAC RMS system-to-field isolation when utilizing an external field power supply.

Applications

• Solenoid Valve Control: Direct switching of 24VDC process solenoids and pneumatic actuators in process plants.
• Interposing Relay Driving: Interfacing low-current digital outputs to higher-power control circuits and motor starters.
• Discrete Alarm Indication: Controlling panel-mounted status lamps, annunciators, and field beacons.
• General Process Automation: Integrated discrete output switching for chemical, oil and gas, power generation, and manufacturing facilities.

Technical Specifications

Connections / Interfaces

Installation Guidelines

1. Safety Precaution: Disconnect system power before mounting or wiring the IOTA assembly to prevent electrical shock or hardware damage.
2. Carrier Mounting: Secure the CC-TDOD51 onto the cabinet channel/carrier, ensuring firm contact with the 24VDC bus power distribution screws.
3. Field Wiring: Land field output lines onto the two-level detachable terminal block using wire sizes up to 12 AWG (2.5 mm squared). Confirm output polarity matches the sink configuration.
4. Module Insertion: Carefully align and plug the CC-PDOD51 Digital Output Module into the designated IOTA slot until fully seated.
5. Pre-Power Verification: Verify wiring tightness, ensure proper grounding, and confirm field load currents do not exceed 0.1 A per channel.

Configuration / Commissioning / Replacement

• Channel Fail-Safe Setup: Configure the FAILOPT parameter (Hold Last Value or Shed to Safe Value) via Experion Control Builder software.
• Output Mode Selection: Program channels for latched, pulsed, or pulse-width modulated (PWM) operation based on application needs.
• Hot-Swapping Module: The CC-PDOD51 IOM can be removed or replaced on the CC-TDOD51 IOTA without disturbing the field wiring.
• Commissioning Verification: Exercise output channels through software override tools to verify field device state transitions and switching times under 10 ms.