6
3
KEB COMBIVERT F4-F
6
Name: Basis
02.03.99
Chapter
Section
Page
Date
©
KEB Antriebstechnik, 1999
All Rights reserved
Functional Description
Digital In- and Outputs
Terminal
Name
Function
Decimal Values di.17 and di.18
X2.1
ST
control release
1 (without function)
X2.2
I4
prog. input 4
2
X2.3
I5
prog. input 5
4
X2.4
I6
prog. input 6
8
X2.5
I1
prog. input 1
16
X2.6
I2
prog. input 2
32
X2.7
I3
prog. input 3
64
-
IA
internal input A
256
-
IB
internal input B
512
-
IC
internal input C
1024
-
ID
internal input D
2048
t
t
t
t
t
2ms
6.3.7
Strobe-
Dependent Inputs
(di.17...di.19)
In most cases the strobe signal is used to trigger the input signals. For example, two
inputs shall serve for the parameter set selection. But the signals for the actuation do
not come equally, so for a short time the changeover to an unintended set would take
place. At active strobe the actual input signals of the strobe-dependent inputs are
accepted and maintained until the next scanning.
With di.17 every input can be selected as strobe-dependent input. For the control
release di.17 has no effect, as it is a static input.
With parameter di.18 every input can be adjusted as strobe input
in addition
to its
programmable function. If several inputs are adjusted as strobe they are
OR-operated
.
At the next rising edge from the program cycle the strobe signal is triggered.
di.17 Strobe-dependent inputs
di.18 Selection of strobe signal
Where is the strobe signal
coming from?
Edge-active or static strobe?
As a standard the strobe is edge-active, i.e. the input states are accepted with the
rising edge and maintained until the next edge. In some cases, however, it may be
sensible to use the strobe in a manner of a Gate-function. In such cases the strobe
signal is static, i.e. the input signals are accepted for as long as the strobe signal is
set.
Which inputs are actuated by
strobe?
di.19 Strobe-mode
Fig. 6.3.7.a Edge-active strobe
program cycle
Strobe input
resultant
strobe signal
Terminal status
Input status
Parameter
Setting Range
Function
di.19
0
edge-active strobe (see Fig. 6.3.7.a)
1
static strobe (see Fig. 6.3.7.b)