Siemens SINUMERIK 802D sl Function Manual page 345

Oscillation time
The oscillation time for oscillation mode can be defined in a machine date for each direction
of rotation:
● Oscillation time in M3 direction (referred to as t1 in the following):
● Oscillation time in M4 direction (referred to as t2 in the following):
Oscillation via NCK
Phase 1: With the IS "Oscillation speed" (V380x 2002.5) , the spindle motor accelerates to
the velocity (with oscillation acceleration) specified in MD35400 SPIND_OSCILL_DES_VELO
(oscillation speed). The starting direction is defined by
MD35430 SPIND_OSCILL_START_DIR (starting direction during oscillation).
Phase 2: If time t1 (t2) has elapsed, the spindle motor accelerates in the opposite direction to
the speed defined in MD35400 SPIND_OSCILL_DES_VELO (oscillation speed). Time t2 (t1)
starts.
Phase 3: When time t2 (t1) expires, the spindle motor accelerates in the opposite direction
(same direction as phase 1), etc.
Oscillation via PLC
With the IS "Oscillation speed" (V380x 2002.5) , the spindle motor accelerates to the velocity
(with oscillation acceleration) specified in MD35400 SPIND_OSCILL_DES_VELO (oscillation
speed).
The direction of rotation is determined by IS "Set direction of rotation counterclockwise" or IS
"Set direction of rotation clockwise" (V380x 2002.7 or .6).
The oscillation movement and the two times t1 and t2 (for clockwise and counterclockwise
rotation) must be simulated on the PLC.
End of oscillation mode
The IS "Gear changed" (V380x 2000.3) informs the NC that the new gear stage (IS "Actual
gear stage" (V380x 2000.0 to .2)) applies and oscillation mode is exited. The actual gear
stage should correspond to the set gear stage. Oscillation mode is also ended if the IS
"oscillation speed" (V380x 2002.5) is still set. The last programmed spindle speed (S
function) and spindle rotation (M3, M4 or M5) are active again.
After termination of oscillation mode the spindle returns to control mode.
All gearspecific limit values (min./max. speed etc.) correspond to the set values of the actual
gear stage and are deactivated when the spindle stops.
Turning, Milling, Nibbling
Function Manual, 11/2012, 6FC5397-1CP10-5BA0
MD35440 SPIND_OSCILL_TIME_CW
MD35450 SPIND_OSCILL_TIME_CCW
Spindle (S1)
20.2 Spindle modes
345