Technical data

Drive functions
7.3 Function modules
Function Manual
Function Manual, 06/2012, 6SL3097-4AB10-0BP4
287
Display parameters
● r1119 CO: Ramp-function generator setpoint at the input
● p1149 Ramp-function generator acceleration
● r1150 CO: Ramp-function generator speed setpoint at the output
7.3.8 Free function blocks
7.3.8.1 Overview
Application, properties
A logic operation, which connects several states (e.g. access control, plant status) to a
control signal (e.g. ON command), is required for controlling the drive system in a wide
variety of applications.
Along with logic operations, a number of mathematical functions and storing elements are
becoming increasingly important in drive systems.
This functionality is only available as a "free function blocks" function module (FBLOCKS) on
the SERVO drive object type of SINAMICS S110.
In the free function blocks, analog signals are treated as dimensionless per unit variables
(see the "Connection to the drive" chapter).
Note
This additional functionality increases the calculation time load. This means that the
maximum possible configuration with a Control Unit may be restricted (see the "Calculation
time load" chapter).
Configuration and operation
The free function blocks are configured at the parameter level. The following parameters are
required for this:
● Input parameters (e.g. inputs I0 ... I3 for the AND function block).
● Output parameters (e.g. output Y for numeric change-over switch NSW).
● Adjustable parameters (e.g. pulse duration for pulse generator MFP).
● Runtime group (this includes the sampling time; the free function blocks are not
computed in the factory setting).
● Run sequence within the runtime group.
A parameter is assigned to each input, output, and adjustable variable. These can be
accessed with the STARTER commissioning software or via the BOP. The "free function
blocks" can all be interconnected at BICO level.
The "free function blocks" do not support data set dependency.