Siemens SINUMERIK 840Di Manual page 367

06.03
Example B:
Motor-mounted
encoder
 Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
360 degrees
Internal
=
resolution
MD31020 * pulse rev.
360
Internal
=
resolution
500 * 128
The encoder increment corresponds to 5.625 internal increments.
An encoder increment corresponds to 0.005625 degrees (highest possible
positioning resolution).
Supposed the following conditions are provided:
S
The incremental encoder is mounted on the motor.
S
Encoder pulses = 2048 [pulses/rev.]
S
Pulse multiplication = 128
S
Internal precision = 1000 [increment/degree]
S
Encoder gear stage = 1:1
S
Load gear stage 1= 2.5:1 [motor rev./spindle rev.]
S
Load gear stage 2= 1:1 [motor rev./spindle rev.]
Gear stage 1
360 degrees
Internal
=
resolution
MD 31020 * pulse rev.
360
Internal
=
resolution
2048 * 128
One encoder increment corresponds to 0.54932 internal increments.
An encoder increment corresponds to 0.00054932 degrees (highest possible
positioning resolution).
Gear stage 2
360
Internal
=
resolution
2048 * 128
One encoder increment corresponds to 1.3733 internal increments.
An encoder increment corresponds to 0.0013733 degrees (highest possible
positioning resolution).
10 NC Start-Up with HMI Advanced
MD 31080
* *
MD 31070
1 1
* 1000 = 5.625
* *
1 1
MD 31080
*
MD 31070
1 1
= 0.54932
* 1000
* *
1 2.5
1 1
= 1.3733
* 1000
* *
1 1
10.5 Axes and spindles
MD 31050
* MD10210
MD 31060
int. increments
Encoder pulse
MD 31050
* MD10210
*
MD 31060
int. increments
Encoder pulse
int. increments
Encoder pulse
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