Foxboro P0926JC 8-Channel Isolated Analog Output Module

Overview

The Foxboro P0926JC is an advanced 8-channel isolated analog output module designed for use in the Foxboro I/A Series Distributed Control System (DCS). It offers reliable and precise signal transmission to field devices, delivering 4-20 mA DC outputs with full channel-to-channel and channel-to-ground isolation, ensuring safety and signal integrity.

Key Features

Channel Isolation: Prevents cross-talk and ground loop interference, improving the accuracy of signal transmission.
Reliable Output: Provides stable 4-20 mA DC signals for precise control of actuators and instrumentation.
Compact Design: Space-efficient, making it ideal for dense control environments.
Industrial Durability: Operates reliably under harsh conditions, ensuring consistent performance in challenging industrial environments.
System Compatibility: Fully integrates with Foxboro I/A Series DCS, making it easy to incorporate into existing control systems.

Technical Specifications

Specification	Details
Model	P0926JC
Type	8-channel isolated output module
Output Signal Range	4-20 mA DC
Isolation Voltage	1500 VRMS
Operating Voltage	24V DC
Current Rating	5A per channel
Power Consumption	< 8.5 W
Dimensions (L x W x H)	100 mm x 80 mm x 30 mm
Weight	0.3 kg
Operating Temperature	-40°C to +85°C
Protection Rating	IP20

Ethernet Link Setup

The P0926JC connects to field communication devices through an RJ-45 connector located on the front of the module. You can connect the P0926JC module to field devices via a hub or Ethernet switch. For multiple device connections, you will need a hub or switch to manage the data flow.

Configuration

The FDSI Configurator sets up the P0926JC module based on XML port and device configuration profiles. It simplifies the setup process by allowing easy configuration of each port’s communication parameters, such as DHCP, IP address, and more. While device-specific configurations are optional, they can be customized when necessary (e.g., scan rate, address of transmitted data, and data volume).

Operation

The P0926JC supports communication with up to 64 devices, enabling reading or writing of data. A single Foxboro I/A Series control station can connect to 2000 distributed control interface (DCI) data points, allowing the module to read or write data efficiently. The supported data types depend on the specific driver loaded into the P0926JC, which converts data into DCS-compatible formats.

Analog Inputs/Outputs: Supports integer or IEEE single-precision floating-point values.
Digital Inputs/Outputs: Can handle multiple digital points, with a maximum of 32 points per group.

Thus, a single Foxboro I/A Series control station can access up to 2000 analog points or 64,000 digital points, depending on the system configuration. The data access speed is as fast as 500ms, though performance varies based on the device type and data layout.

The P0926JC module collects data from devices, performs necessary conversions, and stores the converted data in its internal database, which integrates seamlessly into the I/A Series system for plant management functions.