System  Table of Contents 
HI 803 211 E Rev. 1.01.00  Page 3 of 110 
Table of Contents 
1  Introduction  7 
1.1  Structure and Use of the Document  7 
1.2  Target Audience  7 
1.3  Writing Conventions  8 
1.3.1  Safety Notices  8 
1.3.2  Operating Tips  9 
1.4  Safety Lifecycle Services  10 
2  Safety  11 
2.1  Intended Use  11 
2.1.1  Application in Accordance with the De-Energize to Trip Principle  11 
2.1.2  Application in Accordance with the Energize to Trip Principle  11 
2.1.3  Use in Fire Alarm Systems  11 
2.1.4  Explosion Protection  11 
2.2  ESD Protective Measures  12 
2.3  Residual Risk  12 
2.4  Safety Precautions  12 
2.5  Emergency Information  12 
3  Concept for HIQuad X  13 
3.1  Safety and Availability  13 
3.2  Concept for HIQuad H51X  14 
3.2.1  The H51X Mono System  15 
3.2.2  The H51X Redundancy System  17 
3.3  Concept for HIQuad H41X  20 
3.3.1  The H41X Mono System  21 
3.3.2  The H41X Redundancy System  23 
3.4  Extension Rack  25 
3.5  Ventilation Concept  26 
3.5.1  Measures for Reducing the Temperature  26 
3.5.2  Engineering Support  26 
3.5.2.1  Installing the HIQuad X System in the Control Cabinet  26 
3.5.2.2  Heat Dissipation  28 
3.5.2.3  Installation Type  28 
3.5.2.4  Natural Convection  28 
3.5.2.5  Note on the Standard  28 
4  Product Description  29 
4.1  Backplane  29 
4.2  19-Inch Frame  29 
4.2.1  H51X Backplane  31 
4.2.1.1  Supply of the H51X Base Rack  31 
4.2.1.2  Buffered Voltage for LS1+ and LS2+ in F-PWR 02 Buffer Modules  32 
4.2.1.3  5 V Power Supply for Extension Racks  32 
4.2.1.4  Signaling Relay for F-PWR 02 Buffer Module, XG6  32 
4.2.2  H41X Backplane  33 
4.2.2.1  Supply of the H41X Base Rack  33