Section 5: Configuration of the frequency converter
a)
Increase
Decrease
f ref.
b)
t
The rate of rise and fall depends on:
- motopotentiometer constant (par. 2.23)
- system dynamics (par 1.30 and 1.31)
Increase
Decrease
DI5
DI6 +24V
14 15 16
t
t
Fig. 5.5. a) - connections on terminal block X1, b) - illustration of the
motopotentiometer system operation
In the above-mentioned example, the digital inputs DI5 and DI6 were used,
which corresponds to the settings: par. 2.20 =
"5"
, par. = 2.21
"6"
.
The change of the rise/fall time of the motopotentiometer referencing-unit in
the range of 0.1..320.0 s. is made by par. 2.23.
TWERD Power Electronics
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