Johnson Controls York AYK550, User Manual

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YORK, A Johnson Controls Company
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4002
*'!'*&'* >^> > Q>
Defines the PID Controller’s integration time.
Integration time is, by definition, is the time required to increase
the output by the error value:
• Error value is constant and 100%.
• Gain = 1.
• Integration time of 1 second denotes that a 100% change is
Achieved in 1 second.
0.0 =
NOT SEL
– Disables integration (I-part of controller).
0.1…600.0 = Integration time (seconds).
See 4001 for adjustment procedure.
4003
!*'*&'* >> > >
Defines the PID Controller’s derivation time.
• You can add the derivative of the error to the PID controller output.
The derivative is the error value’s rate of change. For example, if the
process error value changes linearly, the derivative is a constant
added to the PID controller output.
• The error-derivative is filtered with a 1-pole filter. The time constant of
the filter is defined by parameter 4004
PID DERIV FILTER
.
0.0 =
NOT SEL
– Disables the error-derivative part of the PID controller
output
0.1…10.0 = Derivation time (seconds)
4004
%*!*\*"'! >> > >
Defines the filter time constant for the error-derivative part of the PID controller output.
• Before being added to the PID controller output, the error-derivative is filtered with a 1-pole filter.
• Increasing the filter time smooths the error-derivative, reducing noise.
0.0 =
NOT SEL
– Disables the error-derivative filter.
0.1…10.0 = Filter time constant (seconds).
4005
!!&!"* B
Selects either a normal or inverted relationship between the feedback signal and the drive speed.
0 =
NO
– Normal, a decrease in feedback signal increases drive speed. Error = Ref - Fbk
1 =
YES
– Inverted, a decrease in feedback signal decreases drive speed. Error = Fbk - Ref
4006
*' Q ]
Selects the unit for the PID controller actual values. (PID1 parameters 0128, 0130, and 0132).
• See parameter 3405 for list of available units.
4007
#%\&!' ]
Defines the decimal point location in PID controller actual values.
• Enter the decimal point location counting in from the right of the entry.
• See table for example using pi (3.14159).
2]_%2=%*#,
23 =,2 ! 7 !2,2 4, #
t
P 4002
A
C (P 4001 = 1)
B
A = Error
B = Error value step
C = Controller output with Gain = 1
D = Controller output with Gain = 10
D (P 4001 = 10)
t
100%
Gain
Process Error Value
P 4003
D-part of controller output
PID output
Error
t
0%
P 401
]g ,+ +
0 0003 3
1 0031 3.1
2 0314 3.14
3 3142 3.142