Siemens SINAMICS S120 Function Manual page 117

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 M_red to the scaling of the torque limit
Control signal
STW2.8 r2093.8
Also when p0922 = 102 ... 106
Receive process data
1
2
3
4
M_red p2050[4]
e.g.
6
by 10 %
...
Fig. 3-24 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.
© Siemens AG 2006 All Rights Reserved
SINAMICS S120 Function Manual, 03/2006 Edition
p1545
Closed-loop
(2093.8)
control
M_limit_1
p1520
p1520
p1544
––> 100 % == 4000 hex
p1542
(2050[4]) 1 – (p1544 * x)
10 %
M_limit_2
p1521
p1521
p1544
––> 100 % == 4000 hex
p1542
(2050[4]) 1 – (p1544 * x)
10 %
Operating Modes
Status signals
p2081[8]
r1406.8 (1406.8)
Scaling
p1522
(1520)
p1528
p1543 (1543)
to 90 %
Scaling
p1523
(1521)
p1529
p1543 (1543)
to 90 %
Servo control
ZSW2.8
see
Function diagram
5620
5630
3-117