Description

The Honeywell CC-PDOD51 is a 32-channel, 24VDC digital output module designed for process switching applications within the Experion C300 Series C I/O architecture. Functioning as an open-drain SINK-type output card, this module allows the system to switch field loads by pulling the return path to ground, operating seamlessly with user-supplied field power supplies up to 30 VDC. The assembly comes conformal coated to protect internal electronic circuits against corrosive elements and harsh environmental contaminants commonly found in industrial processing plants.

Designed for cabinet density and reliable execution in DCS installations, the CC-PDOD51 plugs directly into its designated Input Output Termination Assembly (IOTA). It eliminates the need for separate chassis housing, receiving its operational logic power directly through the carrier bus. The module features integrated electronic overcurrent protection on every channel, eliminating the maintenance overhead associated with traditional inline fuses. It also provides configurable safe-state (FAILOPT) behaviors, enabling each output channel to either hold its last value or shed to a predetermined safe value in the event of system communication loss or controller failure.

Operating across 32 discrete output channels, the module supports flexible switching functions including latched, pulsed, and pulse-width modulated (PWM) outputs. To preserve signal integrity between field circuits and control logic, the Honeywell CC-PDOD51 maintains 1000 VAC RMS galvanic isolation between field power loops and the core system backplane. When deployed on redundant IOTA base units, the hardware delivers seamless switchover capability with zero output current gap, ensuring continuous process operations for critical actuators, interposing relays, and solenoid valves.

Features

• 32-Channel SINK Configuration: Operates as an open-drain discrete output card designed to switch 24VDC field loads up to 0.1 A per channel.
• Conformal Coating: Factory-coated internal circuitry provides resistance against airborne pollutants, industrial moisture, and corrosive atmospheric contaminants.
• Electronic Overcurrent Protection: Features integrated current-limiting hardware to safeguard field wiring and channel drivers without requiring physical fuses.
• Configurable Safe-State (FAILOPT): Allows per-channel programming to either Hold Last Value or Shed to Safe Value during system communication faults.
• Versatile Switching Modes: Supports latched, pulsed, or pulse-width modulated (PWM) signal generation tailored to process control hardware.
• Galvanic Isolation: Provides 1000 VAC RMS isolation between field-supplied power circuits and the system architecture.
• Zero-Gap Switchover: Eliminates output current dropping (0 ms gap) during redundancy failover when installed on dual-IOM base units.

Applications

• Solenoid Valve Actuation: Control and switching of 24VDC pneumatic and hydraulic solenoid coils in process skids.
• Interposing Relay Logic: Interfacing low-current DCS output signals with higher-voltage motor control centers (MCC) and field equipment.
• Annunciator & Pilot Light Control: Driving cabinet status indicators, local alarm horns, and visual display panels.
• Discrete Skid Integration: Switching discrete actuators and equipment run/stop commands within Experion C300 control networks.

Technical Specifications

General

Input / Output Characteristics

Electrical & Isolation

IOTA Compatibility

Installation Guidelines

1. Pre-Installation Inspection: Verify the module part number (CC-PDOD51) and check that the physical enclosure and connector pins show no shipping damage.
2. IOTA Mounting: Ensure the target IOTA (CC-TDOD51 or CC-TDOD61) is securely installed onto the cabinet enclosure rails and properly bonded to system ground.
3. Field Power Wiring: Connect the external 24VDC user field power supply to the designated terminals on the IOTA assembly, maintaining correct polarity.
4. Field Load Termination: Land field wiring onto the detachable two-level IOTA terminal blocks. Ensure wire sizes do not exceed 12 AWG (2.5 mm stranded).
5. Module Insertion: Align the CC-PDOD51 module with the guide connectors on the IOTA and press firmly until the locking mechanism engages.
6. Grounding & Shielding: Confirm overall cabinet ground continuity to prevent common-mode voltage fluctuations from impacting field circuits.

Configuration & Commissioning

• Channel Parameterization: Assign individual channel operation parameters (latched, pulsed, or PWM) within the Experion Engineering Studio environment.
• FAILOPT Behavior Setup: Configure safe-state parameters on a per-channel basis, defining whether outputs hold their last valid state or transition to a safe zero/off condition upon system failure.
• Field Loop Testing: Perform point-to-point output verification from the control software, observing channel switching performance and load current across active field devices.
• Redundancy Verification: If installed in a dual-module configuration on a CC-TDOD61 IOTA, perform a manual failover check to ensure continuous load state retention without signal interruption.