Moore Industries SLA multifunction safety logic solver

Moore Industries has released the SLA Multiloop and Multifunction Safety Logic Solver and Alarm. The SLA is designed to IEC 61508:2010 standards and is exida certified for use in Safety Instrumented Systems (SIS) for systematic integrity up to SIL 3 and for random integrity up to SIL 2.

The SLA performs as a multiloop logic solver with built-in voting and enhanced maths capability typically found in more complex safety PLCs. Moore Industries says that this allows the SLA to handle everything from simple alarming to more complex schemes that include 1oo2, 2oo3 or even 5oo8 voting architectures.

The SLA accepts up to four discrete and six analog inputs. HART data from field devices is passed through the SLA to its analog outputs enabling bidirectional communication for continuous monitoring and programming. Its four relay outputs and up to four discrete contact closure outputs can be driven by any of 16 internally configured alarms, where individual or multiple alarms can be assigned to each relay or discrete output.

Three optional analog outputs allow transmission of any input or internally calculated equation or variable. The SLA is programmable with any FDT-compliant host utilising the SLA’s DTM with simple drop-down menus and checkboxes. The functionality includes an equation editor that can be employed to create monitoring, alarming and control schemes involving simple to complex equations using timers, running min/max functions, prebuilt analog and discrete logic functions.

Security jumpers can be set to prevent unauthorised reprogramming and ensure read-only communications through the Ethernet and Modbus ports.