Compact logic solver with built-in voting capability

18 September 2023

Moore Industries has introduced the SLA Multiloop and Multifunction Safety Logic Solver and Alarm – designed and built to IEC 61508:2010 standards and 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 math capability which allows it to handle everything from simple alarming to more complex schemes that include 1oo2, 2oo3 or even 5oo8 voting architectures. This enables it to act on potentially hazardous process conditions; warn of unwanted process conditions; provide emergency shutdown; or provide on/off control in Safety Instrumented Systems and traditional alarm trip applications.

The 4-wire (line/mains powered) SLA accepts up to four discrete and six analogue inputs from an array of devices and sensors. HART data from connected field devices is passed through the SLA to its analogue outputs enabling connected hosts and asset managers bi-directional 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. 

The SLA is easily programmable with any FDT compliant host utilising the SLA’s DTM with simple drop-down menus and checkboxes; no custom or licensed software is required. 

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