Rockwell Automation 440R MSR300 Modular Safety Control System - Manual (Page 49)

MSR300 Safety System Manual
Rockwell Automation
MSR300 Manual.doc Pg 49 of 85
6
Faults Detection and Response
[Note: In the following part of this document, "fault" can mean the occurrence of an
internal failure or defect, an external wiring or signal error, or a system configuration
error].
The MSR300 System has extensive error detection capabilities. Faults, symptoms and
corrective action are categorized and described below.
6.1 Major
Faults
Major faults are indicated by the "Status" LED lighting up red continuously. These faults
include:
• The two redundant microprocessors of the MSR310 Base Module perceive
different operating states of the system as a whole.
• Tripping due to:
• Difference in the settings of the two redundant sets of rotary switches of any
Input Module
• Detection of high level of electromagnetic radiation
• Internal fault/s