GE GFK-0787B A,

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GFT-166 Revision 1.3

April 4, 1995

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GFK-0787B

TÜV is an acronym for “Technischer Überwachungs–Verein”, which has a rough

translation to English of “Technical Supervisory Group”. TÜV is an independent

German technical inspection agency and test laboratory, widely recognized and

respected for their testing and approval of electronic components and systems for use in

safety critical applications.

GE Fanuc has received TÜV type approval for the GMR system, for use in safety-

relevant applications such as Emergency Shut Down (ESD), according to class 1 through

5 of DIN VDE 0801 standards and requirements. The type approval certificate is 945/EL

273/95. TÜV type approval for the GMR system for use in Fire and Gas applications is

pending. The GMR system may be used in the following configuration for class 4 or 5

applications respectively:

Class 5 – Triplex (2v3) – Fail Safe and Fault Tolerant

Class 5 – Duplex (2v2) – Fail Safe

Class 4 – Duplex (1v2) – Fail Safe and Fault Tolerant

The Genius Modular Redundancy system is a high-reliability, high-availability system. It

is based on the field-proven Series 90-70 PLC and Genius I/O products. These standard

off-the-shelf, general-purpose PLC products are capable of a very wide range of

applications and uses. All of this general-purpose capability carries over to the GMR

system.

All Series 90-70 PLC and Genius I/O products can be used with a GMR system. However,

not all of the available components are TÜV approved for use in the safety relevant

portion of a system. All components can be used, but with restrictions as described in

this appendix. The subset of components that are approved are also listed in this

appendix. In addition, this appendix describes restrictions placed on the design,

configuration, installation and use of a GMR system that will be applied in an

Emergency Shut Down (ESD) application, for which for a TÜV site application approval

will be sought.

A TÜV site application approval consists of a review and check of the system as installed

and commissioned at the final site by a TÜV site engineer. The process includes a review

and check of all installed hardware, software, configuration, procedures and the specific

application program to ensure conformance with the User’s Manuals, the specified

environmental conditions and the following restrictions.