Planar4 systems integrate inputs, logic processing and outputs on every module. The application-
specific programming of the systems is accomplished without software, instead using various wiring
techniques such as solder, Termipoint or Wire Wrap on the backplane bus board. All modules can
be used in a redundant structure in order to increase availability.

Planar4 Systems
• SIL 4
• For automated processes with extremely high potential risks
• Scalable redundancy
• Hardwired systems
List of Certificates
• Draft IEC 61508. Part1–7:1997 (up to SIL 4)
• ANSI/ISA-84.00.01-2004
• EN 50178:1997
• EN 61000-6-2:2001
• EN 61000-6-4:2001
• EN 60079-15:2003 ATEX (Zone 2. T4)
• ANSI/ISA-S 71.04 Class G3
Typical applications
• High Integrity Pressure Protection Systems (HIPPS)
• Emergency stop systems on drilling platforms
• Extremely time-critical safety circuits
• Primary shutdown systems
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