AADvance Safety Manual - Tuv-fs.com

Chapter 5 AADvance Functional Safety SystemImplementationConnection for a Common Fault AlarmThe controller provides a dedicated connection for use by a hard-wired device orcircuit that provides the common fault alarm for the system. This connection is thetop-level alarm indicator for the controller. The alarm is functionally equivalent to theSystem Healthy indicator on a processor module, and is usually the starting point forinvestigations into system faults.The controller must be connected to a common fault alarm.The controller provides up to three alarm outputs for a common fault alarm driven bythe processor modules. The alarm outputs are available at the remote fault connectorlabeled FLT ('fault') on the 9100 processor base unit, and are provided by volt-free('clean') relay contacts which are arranged according to the following illustration:The contacts are rated 200mA (continuous and switching) at 30V dc.The contacts are normally closed. They open to indicate a fault condition. For a simpleapplication needing one summary 'fault' indication, do the following: For a controller with one processor module, connect the alarm wiring to pins 1and 2 For a controller with two processor modules, connect the alarm wiring to pins 1and 3 For a controller with three processor modules, connect the alarm wiring to pins 1and 4 Apply a minimum tightening torque of 0.22 Nm (0.16 ft lb) to the terminal screwsDocument number 553630 Issue 7: February 2010 5-5