Siemens Sinumerik 840D Series Function Manual page 141

10.03
Minimum and
maximum
velocity
Phase error
compensation
5008 ENC_PHASE_ERROR_CORRECTION
Encoder phase error compensation
Unit: Default:
Degrees 0.0
5011 ACTUAL_VALUE_CONFIG
Actual-value sensing configuration
Bit 0= 0: No inversion
1: Actual value inversion
Bit 1= 0: No phase error compensation activated
1: Phase error compensation activated
Bit 3= 0: No absolute value encoder
1: Absolute value encoder (EnDat or SSI encoder)
Bit 4= 0: Rotary measuring system
1: Linear or rotary measuring system
Bit7= 0: No distance-coded measuring system
1: Distance-coded measuring system
Bit 8= 0: No zero marker selection by NC
1: Zero marker selection by NC
Bit 14=0: 100 kHz data transfer rate (absolute value encoder)
1: 500 kHz data transfer rate (absolute value encoder)
Unit: Default:
HEX 0
 Siemens AG, 2003. All rights reserved
SINUMERIK 840D/SIMODRIVE 611 digital, HLA Module (FBHLA) - 10.03 Edition
The minimum or maximum possible velocity depends on the position measuring
system.
S
V : of the position measuring system must not be exceeded.
max
The maximum measuring velocity must be set in MD 5609:
ENC_SPEED_LIMIT (see Subsection 4.13.1).
V must not exceed the 350 kHz bar frequency of the connected measur-
max
ing system.
V
max,bar
S
V : The number of crossed graduations per velocity controller cycle is
min
small at low velocities. In extreme cases, this can result in uneven move-
ments at low velocities, large scale graduation and short velocity controller
cycle.
Solution: Select another position measuring system with smaller
scale graduations or increase the velocity controller cycle.
A phase error on tracks A and B can be corrected with the phase error com-
pensation function.
Minimum: Maximum:
-20.0 20.0
Minimum: Maximum:
0 65535
4 Firmware Drive Functions
4.10 Position measuring system
=scale graduation @ 350000 s
Related to:
HLA
Data type:
FLOAT
Related to:
HLA
Data type:
UNS.WORD
- 1
Cross reference: -
Protection level:
3/3
Active:
Immediately
Cross reference: -
Protection level:
3/3
Active:
Power On
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