17
ANTRIEBSTECHNIK
6
9
17
KEB COMBIVERT F4-C
Name: Basis
29.01.98
6
ANTRIEBSTECHNIK
Section
Page
Date
©
KEB Antriebstechnik, 1997
All Rights reserved
Chapter
Functional Description
Special Functions
6.9.5
Timer
Programming
Two timers are integrated in the inverter. One timer counts from an adjusted value
downwards. The other timer counts upwards up to an adjusted value. The function of
it can be influenced by set and reset conditions. On attaining an adjusted comparison
value one condition for the setting of digital outputs is met, which for example can be
used for the set changeover.
Fig. 6.9.5
Timer Programming
Timer/Value (LE.35)
LE.35 defines the running time of the timer in steps of 0.01s (0s = off). The timer
starts when a parameter set is activated in which the timer is adjusted to > 0 s.
Through an error or a set change at Low Speed (LS) or when the control release is
deactivated (noP), the function is reset. When the running time of the timer has elapsed
the switching condition 22 „Timer elapsed“ is set (see „Digital Outputs“).
Counter/Resolution (LE.47)
LE.47 adjusts the resolution of the counter (s / hour). The timer starts and increases
the value for as long as one of the programeed conditions in LE.46 is met.
The conditions, at which the counter increments, may be selected from the following
table. The conditions are OR-linked, i.e. if one of the adjusted conditions is met the
counter increments.
Bit
Value
Counting Condition
0
1
Input ST (X1.19)
1
2
Input RST (X1.20)
2
4
Input F (X1.10)
3
8
Input R (X1.11)
4
16
Input I1 (X1.4)
5
32
Input I2 (X1.5)
6
64
Input I3 (X1.6)
7
128
Input I4 (X1.7)
8
256
Modulation active
9
512
Modulation inactive
10
1024
Actual frequency = set frequency
Counter/Counting Condition
(LE.46)
LE.35 Timer value
0,00...100,00s
Timer starts when the
parameter set, in which the
timer is programmed, is
activ
Reset through
error, set
change over,
noP or LS
yes
no
Timer
elapsed?
yes
no
Switching condition
22 "Timer elapsed"
is set!
decrements
LE.47 Timer A
Resolution
0 = 0,01 sec
1 = 0,01 Std
Timer starts / counts, for
as long as one of the
conditions programmed in
LE.46 is met!
Is a reset
condition
of LE.45
met?
yes
no
Timer value >
level
LE.41...LE.44?
yes
no
Switching condition
25 "Timer > level"
is set!
increments
ru.33 Current counter
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