Siemens Sinumerik 840DiE sl - Incremental Measuring System Settings

01/2007
11.5 Axes and spindles
11-321
© Siemens AG 2007 All Rights Reserved
SINUMERIK 840Di sl Manual (HBIsl) – 01/2007 Edition
11.5.5 Incremental measuring system settings
The diagrams below show the general possibilities of arranging a rotary incre-
mental measuring system with regard to motor and load, as well as the resulting
values for the appropriate machine data.
M
IS_ROT_AX=0
ÍÍÍÍÍ
ÍÍÍÍÍ
Table
ENC_IS_LINEAR=0
ENC_RESOL
G
DRIVE_AX_RATIO_NUMERA
DRIVE_AX_RATIO_DENOM
ENC_IS_DIRECT=0
LEADSCREW_PITCH
n
Encoders
Measuring
gearbox
n
motor
Load
gearbox
n
Spindle
Ball screw
DRIVE_ENC_RATIO_NUMERA
DRIVE_ENC_RATIO_DENOM
encoder revs
motor revs
=
spindle revs
motor revs
=
Fig. 11-5 Linear axis with encoder on motor
M
IS_ROT_AX=0
ÍÍÍÍÍ
Table
ENC_RESOL
G
DRIVE_ENC_RATIO_NUMERA
DRIVE_ENC_RATIO_DENOM
ENC_IS_DIRECT=1
LEADSCREW_PITCH
ENC_IS_LINEAR=0
Load
Gear
Measuring
gear
n
Spindle
n
Encoders
DRIVE_AX_RATIO_NUMERA
DRIVE_AX_RATIO_DENOM
Ball screw
n
Spindle
n
motor
spindle revs
motor revs
=
encoder revs
motor revs
=
ENC_TYPE=1
ENC_IS_LINEAR=0
ENC_RESOL
Fig. 11-6 Linear axis with encoder on the machine
Rotary measuring
system
Linear axis with
encoder at motor
Linear axis with
encoder on the
machine
11 NCK Commissionin
g
with HMI Advanced