Siemens SINUMERIK Series Function Manual

Also see for SINUMERIK 828D Turning: Diagnostic manual Function manual Equipment manual Programming manual Operating manual

S3: Synchronous spindle13.4 Points to noteExtended FunctionsFunction Manual, 03/2013, 6FC5397-1BP40-3BA1 741Display differential speedThe programmed difference component is displayed as the speed setpoint for theprogrammed differential speed (in our example, corresponds to 100 rpm).The actual speed refers to the motor speed. In the example, the actual speed is 500 rev/min* (-1) + 100 rpm = -400 rev/min.IS NCK to PLCFollowing spindle in speed-controlled operationThe IS "Spindle in setpoint range" (DB31, ... DBX83.5) is set for the following spindle by theNCK if the programmed speed difference (see previous example, N26 with M2=3 S2=100) isreached. If a differential speed is programmed and not enabled by the PLC, this VDIinterface signal is not set.Even if a differential speed has been programmed, the following spindle remains underposition control if this is required by the coupling.NoteThe axial VDI interface signal NCK → PLC IS "Superimposed motion" (DB31, ... DBX98.4) isset when the differential speed programming creates setpoints in addition to the couplingsetpoints.Actual direction of rotation clockwise (DB31, ... DBX83.7)IS "Actual direction of rotation clockwise" (DB31, ... DBX83.7) refers to the resulting motordirection.IS PLC to NCKInfluence on following spindle via PLC interfaceThe effect of the axial VDI interface signals on the following spindle with differential speed inspeed control mode is described below.Delete distance to go / Spindle Reset (DB31, ... DBX2.2)The programmed differential speed and direction can be terminated by IS "Delete distance-to-go / Spindle Reset" (DB31, ... DBX2.2). To delete the programmed speed only, it ispossible to set IS "Delete S value" (DB31, ... DBX16.7).Resynchronize spindle 1/2 (DB31, ... DBX16.4 and 16.5)The IS "Resynchronize spindle 1/2" (DB31, ... DBX16.4/16.5) are not locked. Any positionaloffset is not compensated automatically by the coupling.