Rockwell Automation Publication ICSTT-RM448M-EN-P - February 2021 19
Chapter 2 The AADvance Safety Controller
Total I/O modules = 48
Sync time = 32 ms
Scan time = 39.3 ms + 32 ms + (48 x 0.04) ms + (30 x 1.170) ms + (18 x 1.174) ms =>
129.5 ms
Minimum throughput time = 129.5 ms + 7 ms => 136.5 ms
Maximum throughput time = (2 x 129.5) ms + 13 ms = 272.0 ms.
System Installation
Environment
The installation environment can be a source of common cause failure so it is
necessary that the installation assessment covers the environmental
specification for the AADvance system and includes the following:
•the prevailing climatic conditions
• type of area, e.g. is it a hazardous or non-hazardous area
• location of power sources
• earthing and EMC conditions
In some customer installations parts of the system can be installed in differing
locations; in these cases the assessment must include each location.
Power Sources and Heat Dissipation Calculations
It is highly recommended that module supply power and field loop power
consumption calculations are done to find out the heat dissipation before
designing a suitable enclosure and making a decision about the installation
environment (see topic "System Design for Heat Dissipation").
Safety Related System Installation Process
For a Safety Related System the installation process must also be in line with
the following:
Environment Standards The AADvance system has been investigated to United States National
Standard (s) UL508, 17th Edition and Canadian National Standard (s) C22.2 No
142, 1st Edition. The investigation covers the following modules and provides
WARNING: You must use the installation guidelines given in this manual
and any installation and commissioning procedures that comply with
applicable international or local codes and standards.
CAUTION: AADvance modules are suitable for use in Class I, Division 2,
Groups A, B, C and D Hazardous locations or Non-hazardous locations only or
equivalent.
ATTENTION: Pour les modules AADvance sont utilisables dans Class I,
Division 2, A, B, C et D pour un environnement dangereux ou pour un
environnement non dangereux ou équivalente.
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