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
| SST-PFB3-VME SST-PFB3-VME-2-E PB3-VME-2-E |
Unique Redundancy Methodology Introduction to Redundancy While the SLS 1508 Logic Solver is rated suitable for use in SIL 3 applications in simplex mode, it is installed in redundant pairs for increased process availability. Redundant SLS 1508 Logic Solvers run in parallel at all times. Both read the inputs from the I/O terminals, both execute the logic and both drive the outputs at the I/O terminals. There is no concept of primary and backup or master and slave, which is unlike any other SIS. The only difference between the two is that one communicates with both the engineering and operator workstations and the dedicated safety network (SISNet); this is the one with the Active light on the bezel. The other (Standby) is communicating only on the SISNet. In the event that a failure is detected in one of the SLS 1508 Logic Solvers, it automatically goes to a failed state. In this condition, all its output channels are de-energized; this has no impact on the other SLS 1508 Logic Solver or the physical outputs because the other SLS 1508 Logic Solver continues to read inputs, execute logic and drive outputs. The transition from redundant to simplex mode is therefore completely bumpless. Redundancy The redundant SLS 1508 Logic Solver modules are connected to the field at the redundant terminal block. No control strategy configuration is required to take advantage of SLS 1508 Logic Solver redundancy, as the system’s auto-sense capability automatically recognizes the redundant pair of Logic Solvers. An integrity error alarm in a redundant SLS 1508 Logic Solver pair will notify the operator of a failure. Both SLS 1508 Logic Solvers in a redundant pair are monitored for integrity alarms at all times. Events that can cause integrity alarms include: Hardware failure within a SLS 1508 Logic Solver Communications failure between a SLS 1508 Logic Solver and the SISNet Communications failure between a redundant pair of SLS 1508 Logic Solvers Communications failure between a SLS 1508 Logic Solver and an DeltaV Controller Removal of a SLS 1508 Logic Solver from the carrier The health and status of both SLS 1508 Logic Solvers and their channels are available in the diagnostics explorer
| SST-PFB3-VME SST-PFB3-VME-2-E PB3-VME-2-E |
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