5
5.6
Net data (PKW and PZD area)
5-224
Siemens AG 2005 All Rights Reserved
SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
The system deviation for the dynamic servo control (DSC) is transfer-
red via this control word.
XERR
STW
1
NSOLL_B
The format of XERR is identical with the format of G1_XIST1 (refer to
Chapter 5.6.4)
For dynamic servo control (DSC) the position controller gain factor is
transferred via this control word.
KPC
STW
1
NSOLL_B
Transfer format: KPC is transmitted in the units 0.001 1/s
Example:
A2C2AH
666666D
KPC = 666.666 1/s
KPC = 40 1000/min
Value range:
0 to 4000.0
Special case:
For KPC = 0, the dynamic servo control is de–activated.
The torque limit presently valid in the drive can be reduced using this
control word.
Mom
Red
The normalization of MomRed is defined using P0881 (evaluation, tor-
que reduction PROFIBUS). All 16 bits in the
PROFIBUS process data are evaluated and interpreted as positive
number. The result of the conversion is a percentage factor k which is
applied to P1230 (torque limit) and P1235 (power limit).
k = maximum (0; 1 –
P0881/100 %
16384
MomRed)
Example:
Assumption: Best possible resolution for the full limiting range
Input: P0881 = 25 %
Control word
XERR
(n–set mode)
(from SW 4.1)
Control word
KPC
(n–set mode)
(from SW 4.1)
Control word
MomRed
Normalization of
MomRed (P0881)
5 Communications via PROFIBUS DP
08.99
07.01
08.01