Functions, monitoring and protective functions
9.3 Drive functions
Enclosed Drives
548
Operating Instructions, 12/2018, A5E36652151A
Deactivation of the variable pulse frequency
By changing the parameter p0290 to "0" or "1" the variable pulse frequency is deactivated.
Function diagram
FP 8014
Signals and monitoring functions - Thermal monitoring power unit
Parameters
•
r0036
Power unit overload I
2
t
•
r0037
CO: Power unit temperatures
•
p0115
Sampling times for internal control loops
•
p0230
Drive filter type, motor side
•
p0290
Power unit overload response
•
p1082
Maximum speed
•
r2135.13 Fault thermal overload power unit
•
r2135.15 Alarm, thermal overload power unit
9.3.13
Pulse frequency wobbling
Description
Pulse frequency wobbling is when the pulse frequency is varied slightly according to a
statistical process. The average pulse frequency value is still the value set; the statistical
variation of the instantaneous value results in a modified noise spectrum.
This procedure reduces the subjectively noticeable motor noise, especially for the relatively
low pulse frequencies set in the factory.
Pulse frequency wobbling is activated with p1810.2 = 1. The amplitude of the static
wobbulation signal can be set in the range from 0% to 20% using p1811.
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