HIMax Safety Manual - Tuv-fs.com

More documents

Recommendations

Info

7 Input Modules HIMaxNOTICESystem malfunction possible!The slots reserved for processor and system bus modules must not be used forinput modules!!7.5 Safety-Related Digital InputsThe digital input module reads its digital inputs one time per module cycle and stores thevalue internally. The module cyclically checks that the inputs are safely functioning.Input signals that exist for a time shorter than the time between two samplings, i.e. shorterthan a cycle time of the input module, are not be detected.7.5.1 Use of Digital InputPerform the following steps to use the value of a digital input in the user program1. Define a global variable of type BOOL.2. When defining the global variable, enter the initial value as safe value.3. Assign the global variable to the channel value of the input.The global variable provides the safe value to the user program.For digital input modules for proximity switch internally operating in analog mode, the rawvalue can also be used and the safe value can be calculated in the user program. Refer toChapter 7.7.1 for more information.To get additional options for diagnosing the external wiring and programming fault reactionsin the user program, assign global variable to Channel OK and to further diagnosticstatuses. For more information on the individual diagnostic statuses such as line shortcircuitsand line breaks, refer to the manual of the corresponding module.7.5.2 Test RoutinesThe online test routines check whether the input channels are able to pass both signallevels (0 and 1 signals), regardless of the signals actually present on the input. Thisfunction test is performed each time the input signals are read.7.5.3 Reaction in the Event of a FaultIf the test routines detect a fault of a digital input, the module sets the channel value in away that the global variable assigned to the channel assumes the following values:• For the most faults, the global variable assumes its configured initial value..• For certain types of faults the module is able to put the channel into the safe state, butthe module cannot issue a diagnosis entry.For these faults, the global variable adopts the value 0.The module sets the status Channel OK to FALSE.If the test routines detect a module or submodule fault, the module sets the Module OK orSubmodule OK status to FALSE. Additionally, the module or submodule sets Channel OKto FALSE for all its channels.In all these cases, the module activates the Error LED on the front plate.Page 30 of 70HI 801 003 D Rev.2.0
HIMax7 Input Modules7.5.4 Surges on Digital InputsNOTICEIf shielded cables are used for digital inputs, no additional precautionary measures arerequired to protect against surges.If shielded cables are not used, surge pulses (as defined in EN 61000-4-5) on digital inputsmay be read as a temporary 1 signal due to the short cycle time of HIMax systems.Use noise blanking to avoid these types of faults: a signal must be present for at least twocycles before it is evaluated. At the same time, the safety time must not be exceeded.HI 801 003 D Rev.2.0 Page 31 of 70
Page 1: SAFETYHIMax ®Safety Manual
Page 4 and 5: Table of contentsHIMax3.5 Certifica
Page 6 and 7: Table of contentsHIMax10.2.9 Accept
Page 8: 1 Safety Manual HIMax1.5 GlossaryTe
Page 12 and 13: 2 Intended Use HIMaxStandardEC/EN 6
Page 14 and 15: 2 Intended Use HIMax2.3.4 Power Sup
Page 16 and 17: 3 Safety Concept for Using the PES
Page 24 and 25: 4 Processor Modules HIMaxNOTESystem
Page 26 and 27: 5 System Bus Module HIMaxWARNINGPhy
Page 28 and 29: 6 Communication Module HIMax6 Commu
Page 32 and 33: 7 Input Modules HIMax7.6 Checklists
Page 34 and 35: 7 Input Modules HIMax7.6.3 Checklis
Page 36 and 37: 7 Input Modules HIMax7.7 Safety-Rel
Page 38 and 39: 7 Input Modules HIMax7.8 Checklist
Page 40 and 41: 8 Output Modules HIMax8 Output Modu
Page 42 and 43: 8 Output Modules HIMaxIn this state
Page 44 and 45: 8 Output Modules HIMax8.7 Checklist
Page 46 and 47: 9 Software HIMax9 SoftwareThe softw
Page 48 and 49: 9 Software HIMax9.4 Resource Parame
Page 50 and 51: 9 Software HIMaxExample: A key swit
Page 52 and 53: 9 Software HIMaxThe user only need
Page 54 and 55: 10 User program HIMaxSensors (digit
Page 56 and 57: 10 User program HIMax10.2.5 Downloa
Page 58 and 59: 10 User program HIMax10.2.10 Checkl
Page 60 and 61: 11 Configuring Communication HIMaxN
Page 62 and 63: 11 Configuring Communication HIMaxF
Page 64 and 65: 11 Configuring Communication HIMaxP
Page 66 and 67: AppendixHIMaxIndex of FiguresFigure
Page 68: AppendixHIMaxIndexanalog inputsuse

HIMax Safety Manual - Tuv-fs.com

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?