Siemens SINUMERIK 828D

V1: Feedrates
17.4 Feedrate control
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
1403
• MD12202 $MN_PERMANENT_FEED[n] (fixed feedrates for linear axes)
• MD12202 $MN_PERMANENT_ROT_AX_FEED[n] (fixed feedrates for rotary axes)
• IS "Activate fixed feedrate x for machine axes" (DB31, ... DBX3.2-3.5)
The axis travels at the activated fixed feedrate, instead of at the JOG velocity/JOG-rapid traverse velocity set in
MD.
Constraints
• Fixed feedrate does not influence spindles, positioning axes and tapping.
• While traversing with fixed feedrate, the override depends on machine data:
MD12200 $MN_RUN_OVERRIDE_0 (traveling with override 0)
• The DRF offset cannot be activated for a selected fixed feedrate.
• The fixed feedrates are always linear feedrate values. Switchover to linear feedrate is conducted internally
even in case of revolutional feedrate.
Interface signals
Figure 17-7 Overview of interface signals for fixed feedrate
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