GE PAC8000 Control System 8000-2/x Series Modular I/O

8000-2/x Series Overview

The 8000 I/O is a modular I/O solution for general purpose and hazardous area applications. Based on a base plate system that provides support for a large number of modules, it offers a variety of I/O functions, including AC power and even intrinsically safe signaling within the same node. It has an "open" architecture and communicates with different fieldbuses by selecting the appropriate Bus Interface Module (BIM).

I/O modules

I/O modules provide data transfer between field devices. The input modules receive signals from transmitters and sensors and convert them into digital commands for the BIM. Output modules receive commands from the bus interface module and transmit them to the actuator. A wide range of modules are available, including module types for low-level instrumentation, AC power supplies, and intrinsically safe signals. i/o modules typically have 4. 8. or 16 field channels.

Field Terminals

Field terminals provide the connection between the I/O module and field wiring. They include optional fuses and circuit breakers. Mechanical keying systems prevent misconnection of I/O modules by the type of field terminals. Field terminals are mounted on the module base plate, one for each I/O module. These terminals are securely clamped to the I/O module and form a highly integrated electrical and mechanical assembly. Field terminals can be replaced during operation without removing the base plate and without interfering with the operation of other modules.

Base Plate

Mounted on flat or T or G DIN rails, base plates form the physical and electrical backbone of the 8000. supporting and connecting bus interface modules, power supplies, I/O modules, and field terminals, and supporting the internal Railbus address, data, and power lines. They provide terminals for LAN and field wiring shielded cables and can distribute bus field power to I/O modules. The I/O module backplane can support 4 or 8 I/O modules.

Power Supplies

Good power management is at the heart of a truly distributed I/O system. 8000 power supplies receive local unregulated power and then provide regulated power to the bus interface modules and I/O modules. Power redundancy is supported.

Bus Interface Module (BIM)

The BIM provides a serial data connection to a host controller, which can be a distributed control system (DCS), a programmable logic controller (PLC), or a PC running a software control package. with the BIM, you can adapt to the most common fieldbus protocols. At the same time, the BIM uses a fast internal bus for data transfer to I/O modules. You can control up to 32 I/O modules with just one BIM per node.

"HART compatibility

Process plants are increasingly using "smart" instruments, but the investment in such instruments has never been fully exploited. Whether you are installing a new instrument or upgrading an existing one, we have solutions to help connect HART field instruments to control systems and process automation maintenance software. In particular, the 8000 process I/O system is specially designed to support HART signaling, allowing direct communication between the host control software and any HART field instrument. In addition, the 8000's HART Connectivity System provides on-line access to HART field devices via a PC, allowing the performance of the devices to be monitored and controlled. HART can be used for general condition monitoring and to provide alarms when conditions change.

The advantages of this approach are:

● Reduced commissioning time and costs

● Reduced process downtime through condition monitoring

● Reduced loop maintenance costs through field device diagnostics