Siemens SINAMICS G120 Operating Instructions Manual page 301

Examples
● Speed:
● Temperature:
Limits
Enter limits within the function blocks as scaled values.
Scaled limit = physical limit value / value of the reference parameter.
Example: Or logic combination of two digital inputs
You want to switch on the motor via digital input 0 and also via digital input 1.
Procedure
Proceed as follows to logically interconnect digital inputs 0 and 1:
1. Activate a free OR block by assigning it to a runtime group, and define the run sequence.
2. Interconnect the status signals of the two digital inputs DI 0 and DI 1 with the two inputs
3. Finally, interconnect the OR block output with the internal ON command (p0840).
You have logically interconnected two digital inputs.
Parameter
p20048 = 1
p20049 = 60
p20046[0] = 722.0
p20046[1] = 722.1
p0840 = 20047
Example: AND operation
An additional example of an AND logic operation, including the use of a timer block, is
provided in Chapter Example (Page 432).
Additional information about free function blocks
See also: SINAMICS S110 Function Manual
(http://support.automation.siemens.com/WW/view/en/66206528).
Converter with the CU250S-2 Control Unit (vector)
Operating Instructions, 06/2013, FW V4.6, A5E31759476B AB
Reference speed p2000 = 3000 rpm, actual speed 2100 rpm. As a consequence, the
following applies to the scaled input quantity: 2100 / 3000 = 0,7.
Reference quantity is 100° C. For an actual temperature of 120° C, the input value is
obtained from 120° C / 100° C = 1.2.
of the OR block.
Description
Assignment of block OR 0 to runtime group 1 (factory setting: 9999)
The block OR 0 is calculated in the time slice with 8 ms
Definition of run sequence within runtime group 1 (factory setting: 60)
Within one runtime group, the block with the smallest value is calculated first.
Interconnection of first OR 0 input (factory setting: 0)
The first OR 0 input is linked to digital input 0 (r0722.0)
Interconnection of second OR 0 input (factory setting: 0)
The second OR 0 input is linked to digital input 1 (r0722.1)
Interconnection of OR 0 output (factory setting: 0)
The OR 0 output (r20047) is connected with the motor's ON command
Setting functions
8.7 Application-specific functions
301