Rexroth Tightening System 350 System Documentation - Rhino ...

66/316 Bosch Rexroth AG | Tightening Technology 6 Control Signals6.2 Tightening controller6.2.2 SequenceThe following flow chart provides an overview of the sequence of the individual control signals and thesubsequent switching conditions between the beginning and end of a tightening sequence. Proper functioningof the tightening process is only guaranteed if the following sequence is observed.StartNF = 1Rdy = 1En = 1Reset results outputResRs = 1NF =1Rdy = 1En = 1CyCmp = 0Ok = 0Nok = 1Seq 0-5 = Ack 0-5Start tightening sequenceResRs = 0Cw = 1InCy = 1CyCmp = 0En = 1Ok = 0Nok = 0Rdy = 1InCy = 1En = 1(Ok = 1 AND Nok = 0) OR (Ok = 0 AND Nok = 1)Tightening sequence activeCyCmp = 1Rdy = 1Tightening sequence endedCw = 0InCy = 0CyCmp = 1EndFigure 6–2:Tightening controller sequence1 Signal “high” (signal “on”)0 Signal “low” (signal “off”)Subsequent switching conditions are linked by logical AND, if not indicated otherwise.6.2.3 Chronological Order of the PLC SignalsThe Fig.s in section 6.3 show several sequence examples, along with the relevant PLC signals in chronologicalorder.System 350 | 3 608 878 040/05.2008