Parker Compax3 Series User Manual

Setting up Compax3 C3I22T11
256 192-120114 N5 C3I22T11 June 2008
Leak effect and windowing
If frequencies not corresponding to the frequency resolution are present in the ana-
lyzed spectrum, the so-called leak effect can be caused.
Display of the leak effect with the aid of a 16 point discrete Fourier transformation
Complete oscillation period in the scanning
period
f
0
Envelope without leak effect
Non complete oscillation period in the scanning
period
f
0
Envelope with leak effect
Sine at 200Hz without windowing
Consequence of the leak effect shown at the example of a sine signal.
(fA=4000Hz; N=500; => Δf=8Hz
f0=200Hz = 25*Δf frequency corresponds to the frequency-resolution
The sine frequency is exactly on a multiple of the frequency resolution (200Hz /
8Hz=25). The spectre is clearly separated and there are no leak effects visible.

Parker Compax3 Series Specifications

General

Enclosure Rating	IP20
Control Modes	Speed, Torque, Position
Communication Interfaces	CANopen, EtherCAT
Feedback Options	Incremental Encoder, Resolver
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overtemperature, Short Circuit
Cooling Method	Forced Air, Natural Convection
Relative Humidity	5 to 85 %, non-condensing
Operating Temperature	0 to +45 °C (derating may apply above 40°C)