HONEYWELL 8C-PDOD51 51454361-174 Digital Output Module

Functionality

The 8C-PDOD51 is a Digital Output module specifically designed for bussed 24VDC systems. It provides reliable switching of digital output signals to control solenoid valves, interposing relays, and other process equipment. Moreover, its versatile configuration options make it suitable for a wide range of industrial applications.

Notable Features

This module offers several advanced features to ensure efficiency and reliability:

Extensive Diagnostics:
- Built-in diagnostics monitor system integrity and quickly detect issues.
Redundancy Support:
- It can be paired with redundant IOTA models to increase system availability.
Safe-State (FAILOPT) Behavior:
- Each channel allows configuration to either HOLD THE LAST VALUE or SHED to a SAFE VALUE during failures.
- Users can customize the safe value for each channel.
Output Flexibility:
- Channels support latched, pulsed, or pulse-width modulated outputs, enhancing versatility.
Galvanic Isolation:
- External user-supplied power enables system-to-field isolation for enhanced safety.
Shared Power Design:
- All outputs share a common return (ground) and can be powered by either the system supply or an external 24V power source.

Specifications

Model Variants

The 8C-PDOD51 module is available in multiple configurations to suit different environments:

Model	Description
8C-PDOD51	24V Digital Output, Coated
8U-PDOD51	24V Digital Output, Uncoated

IOTA Models

Model	Description
8C-TDOD51	Non-Redundant, Coated, 9 inches
8U-TDOD51	Non-Redundant, Uncoated, 9 inches
8C-TDOD61	Redundant, Coated, 12 inches
8U-TDOD61	Redundant, Uncoated, 12 inches

Electrical Specifications

Parameter	Specification
Output Channels	32
Output Type	SINK
Load Voltage	Up to 30 VDC
Load Current	Maximum 0.1 A per channel
Short Circuit Protection	Uses series fuses (1 fuse per 8 channels, 4 total)
Galvanic Isolation	1000 VAC RMS (system-to-field for external power)
On-State Voltage	Maximum 1 VDC (at 0.1 A load)
Off-State Voltage	Typical 24 V
Off-State Leak Current	Maximum 100 µA
Turn-On/Turn-Off Time	Maximum 10 ms

Performance

This module ensures seamless operation:

Parameter	Specification
Switchover Gap	None (0 ms, applies to redundancy)

Applications

The 8C-PDOD51 is particularly useful for controlling solenoid valves, interposing relays, and other devices in industrial control systems. Furthermore, its redundancy and fail-safe configuration make it ideal for safety-critical environments.