● The spindle can be synchronized from the motion (after M3 or M4) using SPOS, M19or SPOSA.The responses are as follows:– With SPOS=, SPOS=DC() and SPOS=AC(), the direction of motionis retained and the position is approached.– With SPOS = ACN() or SPOS = ACP(), the position is alwaysapproached with a negative or positive direction of motion. If necessary, the direction ofmotion is inverted prior to positioning.● Crossing the zero mark in JOG mode by means of direction keys in speed control mode.NoteIt does not make any difference whether the synchronization procedure is initiated from thepart program, FC 18 or synchronized actions.NoteDuring synchronization of the spindle, all four possible reference point values are effectivedepending on the measuring system selected. The measurement system offset has thesame effect.The following machine data must be observed:● MD34080 $MA_REFP_MOVE_DIST(Reference point distance / destination point for a distance-coded system)● MD34090 $MA_REFP_MOVE_DIST_CORR(Reference point offset / absolute offset, distance-coded)● MD34100 $MA_REFP_SET_POS(Reference point value, with distance-coded system without any significance)If a non-referenced spindle with SPOS=IC(...) and a path < 360 degrees is positioned, itmay be the case that the zero mark is not crossed and the spindle position is still notsynchronized with the zero mark. This can happen:● After POWER ON● By setting the axial NC/PLC interface signals:DB31, ... DBX17.5 (resynchronize spindle when positioning 2)DB31, ... DBX17.4 (resynchronize spindle when positioning 1)Special features when synchronizing using a contactless proximity switchThe position error caused by the signal delay when using a contactless proximity switch can becorrected internally in the NC by entering a signal runtime compensation.The signal runtime compensation is set by means of the machine data:● MD31122 $MA_BERO_DELAY_TIME_PLUS(delay time of the contactless proximity switch, positive motion direction)● MD31123 $MA_BERO_DELAY_TIME_MINUS(delay time of the contactless proximity switch, negative motion direction)The effect depends on the selected referencing mode:S1: Spindles18.3 Reference / synchronizeAxes and spindles772 Function Manual, 06/2019, A5E47437747B AA |
