Phoenix Contact 1201132, User Manual

Page: 79 / 148

Description of parameter settings
109908_en_00 PHOENIX CONTACT
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10.5.4 Pulse frequency
With the CONTACTRON Speed Starter the pulse frequency on the output side can be
adapted. The device operates with a pulse width modulation. The default value is set to
4 kHz. This frequency can be heard during operation. To reduce the noise the value can be
set to 8 kHz, to 16 kHz or to “AUTO”.
When the pulse frequency is set to "4000, 8000, 16000", the frequency is fixed to the set
value.
When the pulse frequency is set to "AUTO", default is 16 kHz (2 kHz ...16 kHz, depending
on the rated current).
If the derating protection is activated, and the operation frequency is larger than the derating
curve (as shown in Figure 10-4 on page 80 and Figure 10-5 on page 80 ), the rated current
is constant, and Pulse Frequency output by the drive decreases automatically according to
the ambient temperature, overload output current and overload time.
A higher pulse frequency means a higher derating.
Can be set
during
operation
Leading
alphabet
Parameter
name
Setting range Factory
default
- 4. PF - pulse
frequency
Pulse fre-
quency
4000 Hz
8000 Hz
16000 Hz
AUTO (16 kHz,
2 kHz ...16 kHz, depending
on the rated current)
4000 Hz