Product Details
Product Description
Product Description
Focus on DCS, PLC, robot control system and large servo system.
Main products: various modules / cards, controllers, touch screens, servo drivers.
Advantages: supply of imported original products, professional production parts,
Fast delivery, accurate delivery time,
The main brands include ABB Bailey, Ge / fuanc, Foxboro, Invensys Triconex, Bently, A-B Rockwell, Emerson, ovation, Motorola, xyvom, Honeywell, Rexroth, KUKA, Ni, Deif, Yokogawa, Woodward, Ryan, Schneider, Yaskawa, Moog, prosoft and other brands
Unique Redundancy Methodology Introduction to Redundancy While the SLS 1508 Logic Solver is rated suitable for and their channels are available in the diagnostics explorer. When one of a redundant pair of SLS 1508 Logic Solvers is removed online there is no disturbance to the process. When the missing SLS 1508 Logic Solver is replaced with another SLS 1508 Logic Solver, the new SLS 1508 Logic Solver completes its power-up self-tests before the active Logic Solver cross-loads the current database. In safe areas, failed SLS 1508 Logic Solvers can be replaced under power. In hazardous areas, appropriate installation procedures must be followed. Automatic proof testing can be selected on a redundant pair of SLS 1508 Logic Solvers. The desired proof-test interval is set in the configuration and the SLS 1508 Logic Solvers perform the proof test automatically. A warning is given to the operator before the automatic proof test is started. Sequence of Events Capability With DeltaV SIS process safety system, events are automatically generated as function blocks are executed within a module scan. Events are time stamped with a resolution of <1 ms, and they are recorded in the sequence that they occur in the Event Chronicle. When using standard function blocks such as input blocks, |voter blocks, and cause and effect blocks, a standard set of events are automatically generated without special configuration or programing required. For example, I/O failures, trip limits, first outs, and other similar events are automatically time stamped by function blocks and recorded in the Event Chronicle. When a process variable exceeds the trip limit, DeltaV SIS records the event along with the analog value and the trip condition. DeltaV SIS Logic Solver February 2021 www.emerson.com/deltavsis 5 In general, when there is a plant event that triggers an emergency shutdown from the SIS, one input will exceed a trip limit on one scan and this will cause outputs to trip and more inputs will then change state. Sequence of Events Recording has been used to find that first input that caused the trip by looking at all of the inputs in the plant. With the DeltaV SIS system, the operator simply filters the Event Chronicle for first out trips, and the first-out is clearly visible. If higher resolution is required for some channels then they can be wired to both the DeltaV SIS Logic Solver and also to a DeltaV Discrete Input Card for Sequence of Events, which provides a resolution of 0.25 ms.
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