Eaton easyE4 - Page 398

6. Function blocks
6.1 Manufacturer function blocks
Parameter set
Parameter set Description Note
Function block release by
EN is necessary
If this checkbox is enabled, the
state of function block input EN will
be evaluated. If the checkbox is dis-
abled instead, the function block
will be enabled and function block
input EN will not do anything.
This parameter ensures that
when existing programs are
copied, the functionality of the
function blocks that are carried
over will be retained. The para-
meter will be automatically set to
0 or 1 depending on the function
block.
Parameter display
+ Call enabled
Constants can be edited on the
device, as can function block para-
meters when using the EDP pro-
gramming language.

Simulation not possible


Other
Retention
The function block does not recognize retentive data.
Normal mode with signal diagram
For normal mode, specify the number of pulses based on the distance that must be
traversed.
In addition, configure the start frequency and the operating frequency as a function
of the load torque and of the motor being used.
Set the slope for the starting and braking ramps by using the corresponding RF and
BF frequency change inputs. The function block will interpret the frequency change
parameter value as a change in mHz per step. For example RF = 2000 means that the
frequency will increase 2 Hz per step during the acceleration phase.
Parameters for normal operation
Configure the following function block inputs as shown:
l
I1 - Number of pulses; e.g. 10000 (value range 0...2147483647)
l
FS Start frequency; e.g. 200 Hz (value range 0-5000Hz)
l
FO - Operating frequency; e.g. 3000 Hz (value range 0-5000Hz)
l
RF - Frequency change per step in the acceleration phase; e.g., 500
mHz/step, i.e., the frequency is increased 0.5 Hz per step (value range of 0 to
65535)
l
BF - Frequency change per step in the deceleration phase; e.g., 2000
mHz/step, i.e., the frequency is decreased 2 Hz per step (value range of 0 to
65535)
Connect function block inputs EN, S_, and BR to a contact suitable for driving
them.
Adding a comment for the selected operands can make the program easier to
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