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9
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KEB COMBIVERT F5
Name: Basis
04.05.04
6
Section
Page
Date
©
KEB Antriebstechnik, 2002
All rights reserved
Chapter
Functional Description
Special Functions
6.9.4
Timer and
Counter
Two timers are incorporated in the COMBIVERT. As long as one of the adjustable
starting conditions (LE.18/23) or a programmable input (LE.17/22) is set, the timer
counts until reaching the final range value. If one of the reset conditions (LE.20/25) is
fulfilled or one programmable input (LE19/24) is set, the timer jumps back to zero. The
resolution, whether the timer works in seconds or hours, is adjusted with LE.21/26.
The current timer content is displayed in ru.43/44. On reaching an adjustable comparison
level (LE.0...7), the switching condition 37/38 is set. It can be used to set an output.
Fig. 6.9.5
Timer programming
Timer / Mode (LE.21/26)
LE.21 and LE.26 determine the clock source and the counting direction of timer 1 and
timer 2. Clock source can be the time counter in 0.01 s or h-raster or impulses from an
input. The timer runs generally as long as a starting condition is active. After a reset
the timer starts again at zero. The timer stops at the maximal value of 655.35. Following
clock sources can be selected:
Bit
Value Function
0...2
Clock source
0
Time counter 0,01 s (default)
1
Time counter 0,01 hour
2
Edge counter, each edge increases/decreases the counter by 0.01
3
Edge counter, only positive edges increase/decrease the counter by 0.01
4...7 reserviert
3...5
Counting direction
0
Upward
8
The counting direction is dependent on direction of rotation (FOR=upward;
REV=downward)
16
The counting direction is dependent on direction of rotation (REV=upward;
FOR=downward)
The values from Bit 0...2 and 3...5 are to be added up.
Switching cond. 37
„Timer 1 > Level A“
is being set!
Timer value > level
LE.0...LE.7 ?
Is a
reset condition
of LE.20 or LE.19
fulfilled?
Timer counts up to
maximum value if a
condition of LE.18 is fulfilled
or an input of LE.17 is set!
ru.43 Current counter content
no
LE.21 Timer 1 / Mode
no
yes
yes
Resetting to zero
continues to count
Switching cond. 38
„Timer 2 > Level A“
is being set!
Timer value > level
LE.0...LE.7 ?
Is a
reset condition
of LE.25 or LE.24
fulfilled?
Timer counts up to
maximum value if a
condition of LE.23 is fulfilled
or an input of LE.22 is set!
ru.44 Current counter content
no
LE.26 Timer 2 / Mode
no
yes
yes
Resetting to zero
continues to count
I3
I4
Input I3 => Timer 1
Input I4 => Timer 2