Programming the control
signal terminals
01/02 AWB8230-1415GB
60
PWM signal
The output signal is a square wave with a constant period of oscil-
lation. Its pulse width is proportional to the current frequency
value (0 to 10 V correspond to 0 Hz to the end frequency).
If for example, a higher level of smoothing of the PWM signal is
required for a motor current display, an external low-pass filter
circuit is required.
FM signal
The frequency of this signal (PNU C027 = 00) changes proportio-
nally to the output frequency. The pulse duty factor remains
constant at about 50 %. The output frequency at the FM terminal
is ten times that of the DV6 frequency inverter’s maximum output
frequency, i.e. up to 4 kHz. This signal does not have to be
matched; its accuracy is monitored digitally.
Analog measuring instru-
ment
0 to 10 V
1mA
t/T = variable
T = 4 ms (constant)
Figure 47: Connection of analog measuring instrument
Figure 48: Example for a low-pass circuit
0 – 10 V
1 mA
FML
–
+
10 V
t
T
33 kO
82 kO
1 mF
+
–
+
FML
0 – 10 V
1 mA
Digital frequency meter T = 1/(output frequency x factor)
Figure 49: Digital frequency meter connection
FML
f
–
+
10 V
T
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