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2.1 Systems Specification Formal document generated to obtain competitive bids on process control systems, both DCS and PLC based. The specification should include scope of control systems, I/O requirements, system architecture sketch, functionality requirements, performance criteria, and vendor responsibilities. 2.2 System Equipment List Supplement to the specification to detail deliverables from the selected vendor. In some projects with a pre-selected vendor, only the equipment list is prepared. 2.3 Cabinet Arrangements Arrangement of I/O and controllers in the DCS system cabinets, or PLC cabinets/panels. Can be formal drawings or sketches given to the selected vendor who prepares the final drawings and documentation. 2.4 Console/Panel Arrangement Design of control room console based on standard offering from vendor, or custom consoles required for integrating operator interface equipment from various vendors. Usually a desk type arrangement without a vertical section, however, large control room panels are also included in this group. 2.5 Power Distribution Design of the power feed to the control system and to each cabinet or controller requiring power. Includes distribution panel and details for connection to the individual devices. 2.6 Grounding Design of a system grounding system to comply with the vendors requirements and the NEC. Includes connection to cabinets, consoles, and other equipment to the ground bus. 2.7 Control Room Arrangement Details the location of all control equipment in a control room. Can be a stand-alone drawing or included as part of an architectural drawing. 2.8 Loop Drawings Drawings detailing all components of a single control loop including all information necessary to understand, test, and operate the loop. Loops can include both analog and digital components. If necessary, multiple loops can be shown on the same drawing. 2.9 Elementary I/O Drawings Drawings that functionally detail electrical connections to control components used in digital control such as process switches, limit switches and solenoids. These are normally directly connected to I/O modules. 2.10 Motor Control Schematics (3-line) Drawings that functionally detail electrical connections to motors that are controlled from the process control system. 2.11 Transducer/Interface Panels Control room mounted panels that contain components required to interface field devices with the control system. They can contain signal conditioning or isolating equipment such as relays. |