Setting parameters
10/05 AWB8230-1541GB
110
Frequency value signal (FA1/FA2)
Signal FA1 (FA = Frequency Adjustment) is issued when the output
frequency is the same as the reference frequency.
To ensure system hysteresis, signals FA1 and FA2 are activated
each time the actual frequency is 0.5 Hz short of the setpoint or
the frequency set under PNU C042 and deactivated 1.5 Hz past
the setpoint or the frequency set under PNU C043.
The digital output configured as FA2 becomes active when the
frequency falls below the frequency set under PNU C042. FA2 is
deactivated as soon as the actual frequency falls below the value
set in PNU C043. The frequency specified with PNU C042 must be
higher than the frequency in PNU C043. If PNU F001 or PNU A020
is used for the reference input, the frequency set with PNU C042
can be smaller than the value in PNU C043. (a fig. 113).
X If you configure a programmable digital output as FA2, you
must also, under PNU C042, enter the frequency from which the
FA2 signal is active during acceleration.
X With PNU C043, set the respective frequency which is to remain
active until the FA2 signal is deactivated during deceleration.
X Then, program one of the digital outputs 11 or 12 as the FA1 or
FA2 output by setting PNU C021 or PNU C022 to 01 for FA1 or
02 for FA2.
By default, FA1 is assigned to digital output 11.
Figure 111:Digital output 11 configured as FA1 (frequency reached)
Figure 112:Function chart for FA1 (frequency reached)
f
o
: Output frequency
F001:Reference value
FA1
24 V
50 mA
1112CM2
FA1
f
O
0.5 Hz
0.5 Hz
60 ms
1.5 Hz
1.5 Hz
60 ms
F001
F001
Figure 113:Function chart for FA2 (frequency exceeded)
f
o
: Output frequency
h
The transition of an FA1 or FA2 signal from the inactive to
the active state takes place with a delay of about 60 ms.
FA2
f
O
0.5 Hz
1.5 Hz
60 ms
C042
C043
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