2-12
2.4.4 Control function via S1IND/S2IND/S3IND
Selection of fixed frequencies
In addition to the FSINA input, the frequency reference can be preselected
via the control inputs S1IND/S2IND/S3IND as fixed frequency. 3 fixed
frequencies can be selected, which can be activated according to the
truth table.
The truth table below relates to the factory settings,
Parameter 31-KSEL = 0 (data set selector).
Truth table
S1IND S2IND S3IND Speed reference Factory setting
0 0 0 FSIN Analog input* FMAX = 50 Hz
1 0 0 20-FF2-1 [27FF2-2] FF2 = 5 Hz [3 Hz]
0 1 0 23-FF3 FF3 = 15 Hz
1 1 0 24-FF4 FF4 = 30 Hz
0 0 1 25-FF5 FF5 = 3 Hz
1 0 1 26-FF6 FF6 = 0 Hz
0 1 1 30-FF7 FF7 = 50 Hz
1 1 1 22-FMAX1 [29-FMAX2] FMAX = 50 Hz
*Note the settiing of 04-FSSEL.
Example of sequence diagram
FSINA
FF2
FF3
FF3
FF4
STL
STR
S1IND
S2IND
0
f
f
t
FF6
FF5
FF7
S3IND
STOP
= 1 = 0
stop
return
start
enter
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