The DeltaV system uses DIN rail-mounted interconnecting carriers and components that are designed for installation in an enclosure. The carriers provide power and communication connections. The I/O subsystem and the controllers are modular; they simply plug onto the carriers for installation. DeltaV system equipment consists of:
- Power Controller Carriers and I/O Interface Carriers that mount horizontally or vertically on DIN rails. The number in the carrier name (such as 8-wide I/O interface carrier) refers to the number of slots available for connecting the equipment to the carrier.
- LocalBus that consists of an internal power bus on the Power Controller Carrier, busses on the associated I/O interface carriers, and connecting cables. The LocalBus supplies power to the controller and the I/O subsystem and provides communications connections between cards. System power (12 VDC) can be shared along the length of the LocalBus. The length of the LocalBus, including all cabling, cannot exceed 6.5 m (21.3 ft.). The LocalBus at this length can support eight, 8-wide carriers; two, 2-wide carriers; and, three carrier extenders. The length requirement is the same for vertically mounted systems.
- DeltaV I/O subsystem that includes I/O terminal blocks and I/O cards. Terminal blocks snap onto the I/O interface carrier to provide screw terminations for field wiring. I/O cards snap over the I/O terminal block on the carrier and convert field signals to a digital format for control and communications. You can install the I/O terminal blocks and connect field wiring before installing the other devices, thus reducing installation and maintenance costs. Many of the DeltaV Series 2 cards support redundancy. Series 2, redundant capable cards are configured, autosensed, upgraded, and operated just like the pre-Series 2 cards. Series 2 simplex cards can function as drop-in replacements for pre-Series 2 simplex cards of the same type.
- DeltaV Controller that performs local control and manages communication between the I/O subsystem and the Control Network. It mounts on the right slot of the 2-wide Power Controller carrier for horizontal installations and to the right of a power supply on the 4-wide Power Controller carrier for vertical installations for M-series carriers. You can add an additional controller for controller redundancy.
- DeltaV system power. The DeltaV system supports a system power supply (AC/DC) and a system power supply (Dual DC/DC) as well as an Intrinsically Safe system power supply.
- DeltaV Workstations that provide graphical user interfaces to help you configure your system, perform extensive diagnostic checks, operate your process, and gather reporting and historical data. The DeltaV System Identifier, shipped in your License Pack, is a connector that plugs into the Universal Serial Bus (USB) on your ProfessionalPLUS workstation. It gives each DeltaV system a unique identification that allows you to install or download changes to the system. The system identifier is not required for the system to continue running or to restart the system after it has been running.
- Bulk power supplies supply power to the system or to field devices. Power to the system is isolated from power to field devices.
