DISTRIBUTED CONTROL SYSTEM_Product_Luoyang Runcheng Petrochemical Equipment Co.,LTD.---Focus on ASME Test Separator since 2004.







Professional ASME- certifies Oil&Gas Equipments Supply

CN | EN

Professional ASME- certifies Oil&Gas Equipments Supply

Tel：+86-18337966423

Email:sales@lrcoilequipment.com

CN | EN

Home

Product

DISTRIBUTED CONTROL SYSTEM

CATEGORY

DISTRIBUTED CONTROL SYSTEM (DCS)

■ Related Products

DCS System(Wired+Wireless)

■ Introduction

Henan RUNCHENG provides A distributed control system (DCS) is a computerised control system for a process or plant usually with many control loops, in which autonomous controllers are distributed throughout the system, but there is no central operator supervisory control. This is in contrast to systems that use centralized controllers; either discrete controllers located at a central control room or within a central computer. The DCS concept increases reliability and reduces installation costs by localising control functions near the process plant, with remote monitoring and supervision.

■ Constitute

The control systems engineer is familiar with the software connections and the main DCS parts through the control system configuration.

The following considerations are noted:

Hardwired inputs.

These physical wires make the connection between the DCS and the field. For example, the analog input signal by voltage, thermocouple type and resistance temperature device.

Other field devices such as control valves.

When considering the implementation of control valves, care must be given to the regulatory controller action inside the DCS whether the valves is a fail open or fail close type.

The process and I&E engineers verify the information and pass it on to the control systems engineer for correct configuration of controllers.

Digital representation.

This is another signal represented by a square wave that is either high or low, on or off.

They control the interactions of devices such as pumps, motor starters and solenoid valves.

The I&E technician would have to know what device and circuitry to pass this information to the control systems engineer.

Tag name/point name configuration.

This configuration is the measuring boundaries that may also be known as ‘process variable engineering unit low and process variable engineering unit high.’

Based on process engineering and I&E technical information, a value should be determined and given to the control systems engineer.

Alarming values must be determined.

This will give the control system an indication that a trip valve has been reached.

These valves are significant because this lets the process operator know what adjustments to make to keep the process in a safe condition and protect personnel and equipment.

■ The flow chart