Siemens SINUMERIK 828D

V1: Feedrates
17.2 Path feedrate F
Basic Functions
1368 Function Manual, 09/2011, 6FC5397-0BP40-2BA0
17.2.2 Type of feedrate G93, G94, G95
Effectivity
The feedrate types G93, G94, G95 are active for the G functions of group 1 (except G0) in the automatic modes.
G94 or G95 can be used for traversing in JOG mode.
References:
Function Manual, Extension Functions; Jog With/Without Handwheel (H1)
Inverse-time feedrate (G93)
The inverse-time feedrate is used when it is easier to program the duration, rather than the feedrate, for retraction
of a block.
The inverse-time feedrate is calculated from the following formula:
Programming example:
Linear feedrate (G94)
The linear feedrate is programmed in the following units relative to a linear or rotary axis:
• [mm/min, degrees/min] on standard metric systems
• [inch/min, degrees/min] on standard imperial systems
Revolutional feedrate (G95)
The revolutional feedrate is programmed in the following units relative to a master spindle:
• [mm/rev] on standard metric systems
• [inch/rev] on standard imperial systems
• [degrees/rev] on a rotary axis
Where F: Inverse-time feedrate in rpm
v: Required path velocity in mm/min or inch/min
s: Path length in mm/inch
Program code Comment
N10 G1 G93 X100 Y200 F2 ; The programmed path is traversed in 0.5 min.
...
Note
G93 may not be used when G41/G42 is active. If the block length varies greatly from block
to block, a new F value should be programmed in each block for G93.
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