Emerson PAC8000 8115-DO-DC-04 | 8-Channel Digital Output Module

Product Description

The 8115-DO-DC-04 is a PAC8000 series digital output module developed by Emerson for distributed control systems requiring dependable switching of DC field loads. It provides eight output channels designed to drive actuators such as solenoid valves, interposing relays, and status indicators in process environments.

This module is engineered for installation in remote I/O nodes operating under harsh industrial conditions, including hazardous locations. It combines solid-state switching performance with integrated diagnostics to ensure stable and predictable operation in safety-critical applications.

Output Characteristics

• Model: 8115-DO-DC-04

• Module Type: Digital Output (DO)

• Output Channels: 8 independent outputs

• Output Signal: DC switching

• Nominal Output Voltage: 24 VDC

• Maximum Load Current: up to 0.5 A per channel

• Output Type: High-side switching (typical for PAC8000 DO modules)

• Switching Response: Fast response suitable for standard control applications (millisecond-level switching typical)

Electrical Specifications

• System Supply Current: approx. 150 mA

• Field Supply Current: approx. 300 mA

• Field Power Distribution: 24 VDC shared bus

• Isolation:

• Channel-to-Railbus isolation: 100 VAC

• No galvanic isolation between individual channels

Diagnostics & Protection

• Integrated fault detection including:

• Short-circuit monitoring

• Open-load detection

• Automatic fault reporting to the control system for maintenance visibility

• Output protection designed to handle inductive loads commonly found in field devices

Environmental & Compliance Data

• Designed for hazardous area installation (non-incendive field wiring)

• Suitable for Zone 2 / Class I Division 2 environments

• Certified to major international standards:

• ATEX

• IECEx

• FM

• UKEX

Functional Benefits

• Eight-channel configuration reduces panel space and wiring complexity

• Consistent switching performance under varying load conditions

• Integrated diagnostics reduce troubleshooting time in the field

• Seamless integration with PAC8000 remote I/O architecture

Application Areas

• Oil and gas production and processing systems

• Petrochemical and chemical plants

• Power generation and utilities

• Skid-mounted automation systems

• Remote control panels in hazardous locations

FAQ

Q: What types of loads can this module control?
A: It is suitable for typical 24 VDC loads such as solenoids, relay coils, and indicator lamps, including moderate inductive loads.

Q: Does each output channel have independent protection?
A: Channels share a common architecture, but the module provides per-channel fault detection for open and short conditions.

Q: Is external protection required for inductive loads?
A: While the module includes internal protection, external suppression (e.g., flyback diodes) is recommended for extending system longevity.