Siemens SINUMERIK 802S Technical Manual page 87

Matching encoder to spindle
Machine data for encoder adjustment
SINUMERIK 802S base line
Start-Up
Number
31040 Encoder mounted directly to the machine
(encoder no.)
31020 Encoder markings per revolution
(encoder no.)
31080 Numerator resolver gearbox
(encoder no.)
31070 Denominator resolver gearbox
(encoder no.)
31060 Numerator load gearbox
(control parameter set no.): 0...5
31050 Denominator load gearbox
(control parameter no.): 0...5
Example 1 for encoder matching:
Spindle with rotary encoder (500 pulses) mounted directly on the motor. The
internal multiplication factor is 4. The internal computational resolution
amounts to 1,000 increments per degree.
Internal resolution = -------------------------
Internal resolution = ---------------------------- = 180
One encoder increment corresponds to 180 internal increments. One encoder
increment corresponds to 0.18 degrees (minimum positioning step).
Example 2 for encoder matching:
Spindle with rotary encoder on motor (2,048 pulses), internal multiplication
= 4, 2 speed stages exist:
Gear stage 1: Motor/spindle = 2.5/1
Gear stage 2: Motor/spindle = 1/1
Gear stage 1
360 degrees
Internal resolution = ------------------------- x -------------------------- x ------------------- x 1000incr/deg
MD 31020 x 4
360
Internal resolution = ----------------- x ------------- x ------------ x 1000pulses/deg = 17.5781
4 x 2048
One encoder increment corresponds to 17.5781 internal increments. One
encoder increment corresponds to 0.0175781 degrees (minimum positioning
step).
Description
360 degrees
x ----------------------- x 1000
MD 31020 x 4
360 x 1 x 1000
500 x 4 x 1
MD 31080
MD 31070
1 1
1 2.5
Spindle
0 1
Incr. /rev. Incr. /rev.
Motor revs Load rev.
Enc. revs Enc. revs
Motor revs Motor revs
Load revs Load revs
MD 31080
MD 31070
MD 31050
MD 31060
Start-Up
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