Siemens SINAMICS S110 - Page 297

Drive functions
7.3 Function modules
Function Manual
Function Manual, 01/2011, 6SL3097-4AB10-0BP3
295
Example 2: Interconnecting the output value
The per unit output value of the free function block LIM 0 (function diagram 7260) is to be
switched in as additional torque M_additional 2 (function diagram 5060) in SERVO control
mode.
p1513[0] is set to 20231 for this purpose.
Function block LIM 0 is to be called cyclically and is, therefore, assigned to runtime group 8.
p20234 is set to 8.
The runtime group number is chosen here at random.
The sampling time for calling LIM 0 is to be 1 ms.
p20000[8] is set to 4 (= 4 x r20002 = 4 x 250 µs = 1 ms)
x1 * x2
Reference torque
p2003
x1
x2
r20231
LIM 0 Output Y
X
LU
LL QL
QU
M _ Additional 2
20231
p1513 [C]
M_Additional 1
r15 15
Y
+
+
Figure 7-69 Example 2: Interconnecting the output value
Due to the interconnection of p1513 (additional torque 2) to r20231, the per unit output signal
Y of the function block is multiplied internally with the reference torque p2003 and interpreted
as additional torque with units.
Assumption:
● Basic sampling time: r20002 = 0.25 ms
● r20231 = 0.3333
● p2003 = 300 Nm reference torque
● p1511[0] = 0 (additional torque 1 = "0")
● p1513[0] = 20231
Result:
● r1515 = 100.0 Nm (for CDS0)