Honeywell FC-PDB-IOX05 Power Distribution Board

Essential Power Backbone for Extension I/O Cabinets

The Honeywell FC-PDB-IOX05 distributes 5V DC power and watchdog signals from the main controller cabinet to I/O chassis in extension cabinets . This board ensures fault-tolerant power delivery for Honeywell Safety Manager and Experion PKS systems. Furthermore, the FC-PDB-IOX05 supports both redundant and non-redundant configurations for flexible system integration. Its conformal coating provides enhanced protection against moisture, dust, and corrosive atmospheres .

Connector Configuration and Signal Routing

The board features three 4-position headers (5V-1, 5V-2, and 5V-R) for incoming power distribution cables PDC-IOX05-1 and PDC-IOX05-2 . It also provides nine 8-pole pin headers (WdP1 through WdP9) for distributing watchdog signals to multiple downstream chassis . The 5V-1 connector carries ground, CP1 watchdog, and CP1 5V power. The 5V-2 connector similarly serves CP2, while the 5V-R connector handles redundant 5V and combined watchdog outputs from both controllers .

Technical Specifications

Parameter	Specification
Model Number	FC-PDB-IOX05
Manufacturer	Honeywell
Product Type	Power Distribution Board – Extension I/O Cabinet
Function	Distributes 5V DC and watchdog signals to I/O chassis
Input Voltage	5V DC from controller cabinet
Connectors (5V-x)	4-position action pin header
Connectors (WdPx)	8-pole pin header
Module Dimensions (L×W×H)	170 × 70 × 46 mm (6.69 × 2.76 × 1.81 in)
DIN EN Rails	TS32 / TS35 × 7.5
Used Rail Length	171 mm (6.73 in)
Weight	0.5 kg
Operating Temperature	Industrial range (see technical manual)
Certifications	CE, UL, TUV, CSA
Country of Origin	USA

Installation and System Compatibility

The FC-PDB-IOX05 mounts directly onto TS32 or TS35 DIN rails within standard control cabinets . The board accepts power distribution cables PDC-IOX05-1 and PDC-IOX05-2 for interconnection with the main controller chassis . Engineers typically install this module in extension I/O cabinets to expand the system’s I/O capacity. The WdP1 connector should connect to the first (highest) I/O chassis, while WdP2 through WdP9 serve subsequent chassis in the daisy-chain . Consequently, the FC-PDB-IOX05 forms a critical component for building scalable safety instrumented systems across oil and gas, petrochemical, and power generation facilities .