Vacon NXP User Manual

48 • vacon description of parameters
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7
384 AI1 joystick hysteresis (2.2.2.8)
This parameter defines the joystick hysteresis between 0 and 20 %.
When the joystick or potentiometer control is turned from reverse to forward, the output
frequency falls linearly to the selected minimum frequency (joystick/potentiometer in
middle position) and stays there until the joystick/potentiometer is turned towards the
forward command. It depends on the amount of joystick hysteresis defined with this
parameter, how much the joystick/potentiometer must be turned to start the increase of
the frequency towards the selected maximum frequency.
If the value of this parameter is 0, the frequency starts to increase linearly immediately
when the joystick/potentiometer is turned towards the forward command from the
middle position. When the control is changed from forward to reverse, the frequency
follows the same pattern the other way round. See Figure 15.
Figure 15. An example of joystick hysteresis. In this example, the value of par. ID385 (Sleep
limit) = 0
NX12k92
A
B
Par. ID321
= 20 %
Par. ID322
= 90 %
50%
50%
Reference
scaling max
ID304 = 70Hz
Max freq. ID102
= 50Hz
Min freq. ID101 =
Ref. scaling min
ID303 = 0Hz
From reverse to forward
From forward to reverse
Analogue
input (V/mA)
(0-10V/20mA)
J
oystick hysteresis,
ID384 = 20 %
Frequency reference
Hz
REVERSE
FORWARD

Vacon NXP Specifications

General

Brand	Vacon
Model	NXP
Category	Media Converter
Language	English