Siemens SINAMICS S120 Function Manual page 104

Operating Modes
Servo control
Signals
When PROFIBUS telegrams 2 to 6 are used, the following are automatically inter-
connected:
S Control word 2, bit 8
S Status word 2, bit 8
Also with PROFIBUS telegrams 102 to 106:
S Process data T_Der to the torque limit scaling factor
Control signal
STW2.8 r2093.8
Also when p0922 = 102 ... 106
Receive process data
1
2
3
4
T_Der p2050[4]
e.g.
6
by 10 %
...
Fig. 3-21 Signals for "Travel to fixed stop"
When PROFIBUS telegrams 2 to 6 are used, no torque reduction is transferred.
When the "Travel to fixed stop" function is activated, the motor ramps up to the
torque limits specified in p1520 and p1521. If the torque has to be reduced, proto-
cols 102 to 106, for example, can be used to transfer it.. Another option would be
to enter a fixed value in p2900 and interconnect it to the torque limits p1528 and
p1529.
3-104
p1545
Closed- -loop
(2093.8) control
T_limit_1
p1520
p1520
p1544
----> 100 % == 4000 hex
p1542
(2050[4]) 1 - - (p1544 * x)
10 %
T_limit_2
p1521
p1521
p1544
----> 100 % == 4000 hex
p1542
(2050[4]) 1 - - (p1544 * x)
10 %
Status signals
p2081[8]
r1406.8 (1406.8)
Scaling
p1522
(1520)
p1528
p1543 (1543)
to 90 %
Scaling
p1523
(1521)
p1529
p1543 (1543)
to 90 %
© Siemens AG, 2005. All rights reserved
SINAMICS S120 Function Manual, 06/05 Edition
ZSW2.8
see
Function diagram
5620
5630