Vacon NX series Applications Manual page 286

VACON · 286
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Fig. 57: PID sum point reference
NOTE!
The maximum and minimum limits illustrated in the picture limit only the PID
output, no other outputs.
377 AI1 SIGNAL SELECTION * 234567 (2.2.8, 2.2.3, 2.2.15, 2.2.2.1)
Connect the AI1 signal to the analogue input of your choice with this parameter. For more
information about the TTF programming method, see Chapter 8.9 "Terminal to function" (TTF)
programming principle.
384 AI1 JOYSTICK HYSTERESIS 6 (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.
8
Hz
PID Max limit
PID Min limit
PARAMETER DESCRIPTIONS
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