Siemens Sinumerik 840D Series Function Manual page 138

4 Firmware Drive Functions
4.9 Drive data
5151 CYLINDER_A_ORIENTATION
Cylinder mounting position referred to A end
Unit: Default:
Degrees 0.0
5152 CYLINDER_FASTENING
Cylinder fixing (fixed part of HLA)
Bit 0= 0: Cylinder
1: Piston rod
Unit: Default:
- 0
4-138
Note
The mass of the drive is a critical parameter and should be calculated as
exactly as possible!
Minimum: Maximum:
-90.0 90.0
Minimum: Maximum:
0 1
The mounting position of the cylinder (MD 5151) specifies to what degree the
force due to weight of the moved mass (MD 5150) is taken into account in cal-
culating the servo gain and maximum piston travel-in/travel-out speed.
It is assumed that the moved mass will act in the direction of the cylinder axis. If
the weight of the moved mass does not act in this direction, however, MD 5151
must be converted accordingly.
A distinction is made between two different mounting methods in the HLA:
1. The cylinder is stationary, the moved mass is attached to the piston rod (MD
5152 bit 0=0).
2. The piston is stationary, the moved mass is attached to the cylinder (MD
5152 bit 0=1).
The Calculate drive model data routine calculates the weight force applied to
the cylinder from MD 5150...MD 5152 and enters the result in MD 5231.
MD 5150
B
O
Positive sign in
MD5151
Fig. 4-17 Mounting position of drive referred to A end
SINUMERIK 840D/SIMODRIVE 611 digital, HLA Module (FBHLA) - 10.03 Edition
Cross reference: -
Related to:
Protection level:
HLA
3/3
Data type: Active:
FLOAT Immediately
Cross reference: -
Related to:
Protection level:
HLA
3/3
Data type: Active:
UNS.WORD Immediately
Negative sign in
MD5151
O
B
MD 5150
 Siemens AG, 2003. All rights reserved
02.99
10.03