Honeywell CC-PDOD51 Digital Output 24V Module 51454408-175

Honeywell CC-PDOD51 Digital Output 24V Module (51454408-175)

The Honeywell CC-PDOD51 is a 32-channel Digital Output (DO) module with high density from the well known Series C I/O family of the Experion PKS. Designed to meet the needs of modern distributed control systems (DCS), this module provides dependable, field-isolated, sink-type (open drain) 24V DC switching to control field actuators, interposing relays and solenoid valves in demanding industrial applications. It is coated with a G3-grade conformal coating, which is excellent at resisting air corrosion and is hence favoured for marine vessels, offshore platforms and hazardous petrochemical sites.

Model Details:

• Model Number: CC-PDOD51
• Manufacturer Part Number (MPN): 51454408-175
• Alternate Part Variant: CC-PDOD51*E
• Product Type: Series C Digital Output Module

Technical Specifications

IOTA Compatibility

The CC-PDOD51 module requires an Input/Output Termination Assembly (IOTA) block for physical field wiring. It is fully compatible with:

• CC-TDOD51: Non-Redundant IOTA block (9-inch form factor)
• CC-TDOD61: Redundant IOTA block (12-inch form factor)

Part Number Cross-References

• Honeywell 51454408-175
• Honeywell CC-PDOD51*E
• Honeywell DC-PDOD51 (Related Series Variant)

Marine Engineer’s Tips:

1. External Power Isolation: If you are taking advantage of the 1000 VAC galvanic isolation, ensure you isolate the external field power supply grounds from the Series C system ground. Sharing a common return line externally completely bypasses the module’s safety isolation barrier, exposing your Experion controller to field surges.
2. Induced Inductive Back-EMF: When driving inductive loads common to marine systems (such as heavy-duty solenoid valves or mechanical interposing relays), always install external flyback diodes across the DC load coil. The CC-PDOD51 has a max load current limit of 0.1 A per channel. Unsuppressed inductive spikes during turn-off will degrade the internal open-drain channels over time, leading to premature channel failure or stuck-on conditions.