NXS Form 63-2600, Users Manual, Technical Data - CONTROL ...

156 Description of Parameters Honeywell
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 6.4.
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. See Figure 8-34.
Frequency reference
Hz
Reference
scaling max
ID304 = 70Hz
A
REVERSE
FORWARD
50% 50%
B
From reverse to forward
Max freq. ID102
= 50Hz
From forward to reverse
Min freq. ID101 =
Ref. scaling min
ID303 = 0Hz
Par. ID321
= 20 %
Joystick hysteresis,
ID384 = 20 %
Par. ID322
= 90 %
Analogue
input (V/mA)
(0-10V/20mA)
Figure 8-34. An example of joystick hysteresis. In this example, the value of par. ID385 (Sleep
limit) = 0
NX12k92
Automation and Control Solutions
Honeywell
Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North 35 Dynamic Drive
Golden Valley, MIN 55422 Scarborough, Ontario 63-2600-1
MIV 4Z9
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