Spindle setpoint speedThe spindle speed setpoint is derived from the programmed speed taking into account thespindle override and the active limits.If the programmed speed is limited or increased, this is displayed using DB31, ... DBX83.1(speed setpoint limited) or DB31, ... DBX83.2 (speed setpoint increased) (see also "Minimum /maximum speed of the gear stage (Page 828)"). The means that reaching the tolerance rangeof the setpoint speed is not prevented.Tolerance range for setpoint speedThe tolerance range of the setpoint speed is defined by the spindle speed tolerance factor:MD35150 $MA_SPIND_DES_VELO_TOLExample:MD35150 $MA_SPIND_DES_VELO_TOL = 0.1⇒ The spindle actual speed may deviate ±10% from the setpoint speed.The following NC/PLC interface signal is set to "1" if the spindle actual speed lies within thetolerance range:DB31, ... DBX83.5 (spindle in setpoint range) = 1Special case:If the spindle speed tolerance is set to "0", then DB31, ... DBX83.5 (spindle in the setpointrange) is permanently set to "1" and no path control is performed.Speed changePath control only takes place at the start of the traverse block and only if a speed change hasbeen programmed. If the speed tolerance range is exited, e.g. due to an overload, the pathmovement is not automatically brought to a standstill.18.8.4 Minimum / maximum speed of the gear stageMinimum speedThe minimum speed of the gear stage of a spindle is configured in the machine data:MD35140 $MA_GEAR_STEP_MIN_VELO_LIMIT[]The speed setpoints, generated taking into account the override, do not fall below the minimumspeed.If an S value is programmed, which is less than the minimum speed, the setpoint speed isincreased to the minimum speed and the following NC/PLC interface signal is set:DB31, ... DBX83.2 (speed setpoint increased)S1: Spindles18.8 Spindle monitoringAxes and spindles828 Function Manual, 06/2019, A5E47437747B AA