Section 5: Configuration of the frequency converter
Parameter
Function
Description
3.23
Reaction to the
lack of signal at
the Analog Input
In modes of operation:
2...10V, 10...2V and 4mA...20mA, 20mA...4mA
it is possible to define the system behavior when the
voltage value drops below 2V or the current value
drops below 4mA. See Appendix A—parameter 3.
23.
Caution
The system has a set deadband in the range
1.0..2.0V for voltage input and 2..4mA for current
input. The reaction to the lack of signal at the
analog input will only occur after the voltage or
current drops below the deadband.
Analog referencing-units
The structure of the system also includes analogue referencing-units. Analog
referencing-units are closely related to analog inputs, from which they differ in
that they have parameters that define the value of offset and scale.
Table 5.3 gives the configuration parameters for Analog Inputs and the
dependence of the output value of the Analog Ref.-units
A1
and
A2
on the
value of the analog inputs AI1 and AI2.
Tabel 5.3.
Analog referencing-units
Parameter
Function
Description
2.43
A1
referencing-
unit scale
Value in [%] : -500.0 ... 500.0 %
2.44
A2
referencing-
unit scale
Value in [%] : -500.0 ... 500.0 %
2.46
A1
referencing-
unit offset
Value in [%] : -500.0 ... 500.0 %
2.47
A2
referencing-
unit offset
Value in [%] : -500.0 ... 500.0 %
32
TWERD Power Electronics
