Rexroth Tightening System 350 System Documentation - Rhino ...

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230/316 Bosch Rexroth AG | Tightening Technology 9 Tightening Processes9.2 Tightening program steps9.2.6 Conditional input branch stepThis auxiliary step implements a branch in another path of the tightening program if one of the PLC inputs(UsrIn1/2) is active. This makes it possible to implement a tightening process that is dependent on anexternal event.A new conditional input branch step is inserted in the tightening program by clicking on the symbol onthe left. Double clicking on the step opens the corresponding dialog for entering the parameters (Fig.9–40).If this auxiliary step recognizes a low signal at input 1 or 2, the tightening process continues “straight”,i.e. in the same column (Fig. 9–40).If this auxiliary step recognizes a high signal at input 1 or 2, the tightening process will be branched off tothe right and the following tightening steps carried out there.NoteThe entire tightening is only evaluated as OK if it ends in column A. Otherwise, it is evaluated as NOK.Figure 9–40:Conditional input branch dialog9.2.6.1 Step name9.2.6.2 ConditionThis entry determines the name of the auxiliary step.This field stipulates the input IN (UsrIn1 or UsrIn2). Assignment of the UsrIn 1/2 inputs to a physical inputis done in the PLC assignment table (see page 240). The branch occurs if the corresponding input in thecontroller is active.System 350 | 3 608 878 040/05.2008
9 Tightening Processes Tightening Technology | Bosch Rexroth AG 231/3169.2 Tightening program steps9.2.6.3 Accept valuesIf the Accept button is selected, the data is taken over in the tightening program. However, it only appliesafter the data has been sent to the controller!9.2.7 End stepA new end step is inserted in the tightening program by clicking on the symbol on the left. Double clickingon the end step opens the corresponding dialog for entering the parameters (Fig. 9–41).The end step ends the tightening program and terminates each program column (A, B, etc.) in the runsequence. The tightening program may have several end steps if it contains branches. The end step isautomatically inserted in the tightening program and cannot be deleted.Figure 9–41:End step dialog9.2.7.1 Step characteristicsNameGraph resolutionLoosen if NOK:This entry determines the name of the end step.As standard, the graph resolution selected in the start step is preset here. However, an individual graphresolution setting can be selected for the end step from the drop-down list (see page 210).Activate this checkbox if the tightening should be loosened if NOK. After it has been activated, the tighteningparameters for the loosening process must be defined in the Loosen if NOK group field. The targetfunctions available here include Angle and Time. Enter the appropriate target parameters for this. (Parameterizationof the target, additional, and monitoring functions on page 210).Note Take the direction of rotation into account for the Loosen if NOK function (Fig. 9–41)!System 350 | 3 608 878 040/05.2008
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