Emerson EP-7631 Power Modules 1 Channel 24VDC Input Flow 10A

Unique Redundancy Methodology Introduction to Redundancy

Unlike other SIS Logic Solvers, the SLS 1508 is rated suitable for use in SIL 3 applications in simplex mode.

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 Logic Solver or the physical outputs because the other Logic Solver continues

to read inputs, execute logic and drive outputs. The transition from redundant to simplex mode is therefore completely bumpless.

DeltaV Live: New Web Displays

DeltaV Live provides the flexibility to easily and securely integrate process information from many different sources

into a single HMI environment, providing an intuitive and cohesive view into your operations. 

New Web Displays allow users to securely view web content as operator graphics, making it even easier to expand operator visibility and

awareness within the DeltaV Live HMI.

Web Displays behave as any other dedicated operator graphic. 

They can be included in display sets,participate in hierarchical display navigation, and have a dedicated display frame in a layout. 

An intuitive toolbar is also included for easy navigation and zooming.

• Auto-detected ASCII/RTU Modbus® communications protocol

• Low power consumption

• Sophisticated noise reduction

• Internet-ready communications

• Ethernet access

• On-board LED status indicators

• Analog pressure and temperature inputs

• Communication via Emerson’s AMS™ Device Manager and Field Communicator

• API Chapter 21 compliant event and data logging (gas meters)

• MeterLink™ (a Windows® - based interface software)

• Local display (optional)

• Smart meter verification (4-Path and 8-Path meters)