01/02 AWB8230-1415GB
Programmable digital inputs
1 to 8
71
Bitwise fixed frequency selection (SF1 to SF7)
With the digital inputs configured as SF1 to SF7, you can directly
access up to seven fixed frequencies. To do this, enter the value 01
under PNU A019 (fixed frequency drive method) and directly
assign a fixed frequency to each of the digital inputs.
X
Under PNU A019, enter the value 01 to activate the fixed
frequencies SF1 to SF7.
X
Program one or more of the digital inputs 1 to 8 as SF1 to SF7
by entering the following values under the corresponding PNU
(C001 to C008):
– SF1: 32
– SF2: 33
– SF3: 34
– SF4: 35
– SF5: 36
– SF6: 37
– SF7: 38
The fixed frequencies can be programmed in two ways:
• entering the fixed frequencies under PNU A021 to A027
(see below),
• entering the fixed frequencies under PNU F001 (see below).
With PNU F001, you can change parameters even when the para-
meter protection PNU b031 has been set (
a
Page 83).
Entering the fixed frequencies under PNU A021 to A027
X
Go to PNU A021 and press the PRG key.
X
Use the arrow keys to enter the fixed frequency and confirm
with the ENTER key.
X
Enter the remaining fixed frequencies by repeating these steps
for PNU A022 to A027.
Entering the fixed frequencies in PNU F001
Before you can enter the frequencies under PNU F001, you must
set the value 02 in PNU A001.
X
To select a fixed frequency stage, activate the digital input as
listed in Figure 57.
X
Go to PNU F001.
The current frequency appears on the display.
X
Use the arrow keys to enter the fixed frequency and confirm
with the ENTER key.
The entered value is saved in the parameter which you have
selected with the digital input. If you have wired the inputs as
shown in Figure 57, the value is saved under PNU A021 when
digital input 1 is activated.
X
Repeat these steps for your additional fixed frequencies.
Specifying frequency setpoints
The setpoint frequency can be assigned in one of three ways,
depending on PNU A001:
• through the installed potentiometer on the keypad,
PNU A001 = 00;
• through analog input O (0 to 10 V), O2 (–10 V to +10 V) or OI
(4 to 20 mA), PNU A001 = 01 (default);
• through PNU F001 or PNU A020, PNU A001 = 02.
Selecting fixed frequencies
X
The set fixed frequency values are selected by activating the
corresponding digital inputs (
a
Fig. 2).
You do not have to use all seven inputs. You can, for example, set
only one fixed frequency. The priority of the fixed frequencies is
specified through the digital input. Fixed frequency SF1 has the
highest, and SF7 die lowest priority (
a
Fig. 2).
Figure 57:
Digital inputs 1 to 7 configured as SF1 to SF7 (bitwise fixed
frequency selection).
SF3
SF4
SF2
SF1
FWD
P24
FW
1
2
3
4
SF6
SF7
SF5
5
6
7
Figure 58:
Function chart for SF1 to SF7 (bitwise fixed frequency
selection)
f
s
: Setpoint frequency
FWD
SF3
SF4
SF5
SF6
SF7
SF2
SF1
f
1
f
1
f
2
f
3
f
5
f
7
f
6
f
4
f
s
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