Download Function Manual - Service, Support

MD34100 REFP_SET_POS.
Note
Only use MD34080 for shifting the 0 degree position. Monitoring with MD34060 REFP_MAX_MARKER_DIST should be
set to two spindle revolutions (720 degrees).
●
Programming SPOS=... from various states (refer to Section "Spindle positioning mode (Page 156)")
●
In JOG mode, the spindle is started in speed control mode with the direction keys and synchronizes with the next zero
mark of the position measurement system or the BERO signal.
Value acceptance
When synchronizing the spindle, the associated reference point from MD34100 REFP_SET_POS[0] (default value = 0) is
transferred and a possible shift of the reference point. These shifts (machine data) act irrespective of the connected
measurement system and are described in Chapter "Reference Point Approach".
Maximum encoder frequency exceeded
When the spindle speed reaches a speed (large S value programmed), which exceeds the maximum encoder limit
frequency MD36300 ENC_FREQ_LIMIT (the maximum mechanical speed limit of the encoder must not be exceeded), the
synchronization is lost. The spindle continues to rotate, but with reduced functionality.
If a speed is then reached that is below the encoder limit frequency in MD36302 ENC_FREQ_LIMIT_LOW (% value of
MD36300), the spindle automatically synchronizes with the next zero mark signal. You can achieve this by programming a
lower S value, changing the spindle speed override switch, etc.
Re-synchronizing
In the following case, however, the position measuring system must be re-synchronized:
the position measurement encoder is on the motor, a BERO (distance sensor for synchronization signals) is mounted to the
spindle and the gear stage is changed. The synchronization is triggered internally when the spindle is rotating in the new
gear stage.
15.4
Gear stage change
Number of gear stages
Five gear stages can be configured for the spindle. If the spindle motor is mounted on the spindle directly (1:1) or with a nonadjustable gear ratio, MD35010 GEAR_STEP_CHANGE_ENABLE (gear stage change is possible) must be set to zero.
Figure 15-6
Gear stage change with gear stage selection
Function Manual
6FC5397-7EP40-0BA0, 08/2013
159