Siemens SIMOVERT MASTERDRIVES Manual page 780

Technology Option F01
9.7.2.6 Machine data input U501 and U502 [804]
Position encoder
and axis type
U501.01=1 ; MD1: encoder type "incremental encoder"
U501.11=36000 ; MD11: axis type "rotary axis with axis length
; 36000 LU (equals 10 motor revolutions,
; see actual value weighting factor (AVWF)
Defining the
traversing velocity
and the
acceleration/
deceleration ramps:
U501.23=10 000 ; MD23: Max. traversing velocity is
; 10 000 000 LU/min. Input in [1000 LU/min].
; Enter same value as P205; see above!
U501.18=333 ; MD18: acceleration for the position control
; modes [*1000 LU/s
U501.19=333 ; MD19: deceleration for the position control
; modes [*1000 LU/s
U501.41=700 ; MD41: acceleration for the speed control
; modes [ms]
U501.42=700 ; MD42: deceleration for the speed control
; modes [ms]
9-132
Machine data MD1 to MD50 (parameters U501.01 to U501.50) are
used to define centralized settings required by the working machine
and the mechanical transmission elements for positioning and
synchronization . In our application example, the following settings
are required:
(resolver)
The same value as P205 should be entered as the maximum traversing
velocity MD23 (see above). All output motor speed setpoints and the
acceleration/deceleration times of the velocity ramps in the homing
[821] and control [825.3] modes refer to MD23.
For the acceleration MD18 and deceleration MD19 for the position
control modes we will assume that the customer requires an
acceleration time of 0.5 s from 0 to MD23. The acceleration is then as
follows:
Acceleration = MD23/acceleration time = (10 000 000 LU/min) / 0.5 s
2
= 333 333.333 LU/s
We will also assume that the deceleration MD19 is to take place with
the same ramp gradient as the acceleration:
For the acceleration time MD41 for the speed control modes homing
[821] and control [825.5], we will assume that the customer requires 0.7
s for an acceleration from 0 to the velocity defined in MD23. 0.7 s are
also used as the deceleration time in MD42 (refers to a deceleration
from the velocity in MD23 to 0). The following machine data must be
entered:
2
]
2
]
6SE7087-6QX70 (Version AG)
Compendium Motion Control
05.2006
Siemens AG
SIMOVERT MASTERDRIVES