AADvance Safety Manual - Tuv-fs.com

AADvance Safety Manualfield deviceItem of equipment connected to the fieldside of the I/O terminals. Such equipmentincludes field wiring, sensors, final controlelements and those operator interfacedevices hard-wired to I/O terminals.fire alarm deviceA component of a fire alarm system, notincorporated in the control and indicatingequipment which is used to give a warning offire — for example a sounder or visualindicator.fire alarm receiving stationA centre from which the necessary fireprotection or fire fighting measures can beinitiated at any time.fire alarm routing equipmentIntermediate equipment which routes analarm signal from control and indicatingequipment to a fire alarm receiving station.function block diagramAn IEC 61131 language that describes afunction between input variables and outputvariables. Input and output variables areconnected to blocks by connection lines. See'limited variability language'.functional safetyThe ability of a system to carry out theactions necessary to achieve or to maintain asafe state for the process and its associatedequipment.GgroupA collection of two or three input modules(or two output modules), arranged togetherto provide enhanced availability for theirrespective input or output channels.Hhand-held equipmentEquipment which is intended to be held inone hand while being operated with theother hand.HARTHighway Addressable Remote Transducerprotocol. A bi-directional industrial fieldcommunication protocol used tocommunicate between intelligent fieldinstruments and host systems.high demand modeWhere the frequency of demands foroperation made on a safety-related system isgreater than once per year or greater thantwice the proof test interval. Applies tosafety-related systems that implementcontinuous control to maintain functionalsafety. Sometimes known as 'continuousmode'.hot swapSee live insertion.II/O base unitA backplane assembly which holds up tothree I/O modules and their associatedtermination assembly or assemblies in anAADvance controller. Part number 9300.See 'I/O module' and 'termination assembly'.I/O moduleA collation of interfaces for field sensors(inputs) or final elements (outputs), arrangedin a self-contained and standardized physicalform factor.IEC 61000-4A series of international standards giving testand measurement techniques forelectromagnetic compatibility.IEC 61131An international standard definingprogramming languages, electricalparameters and environmental conditionsfor programmable logic controllers. Part 3,which is entitled 'Programming Languages',defines several limited variability languages.IEC 61499An international standard defining an openarchitecture for distributed control andautomation.7-4 Document number 553630 Issue 7: February 2010