GE AF-650 GP Programming Manual page 155

Parameter Descriptions
PI-20 Process CL Feedback 1 Resource
Option:
3 3
[0] No function
*
[1] Analog Input 53
[2] Analog Input 54
[3] Frequency input 29
[4] Frequency input 33
[7] Analog Input
X30/11
[8] Analog Input
X30/12
[12] Analog Input
X49/1
[13] Analog Input
X49/3
[14] Analog Input
X49/5
PI-22 Process CL Feedback 2 Resource
Option:
[0] No function
*
[1] Analog Input 53
[2] Analog Input 54
[3] Frequency input 29
[4] Frequency input 33
[7] Analog Input
X30/11
[8] Analog Input
X30/12
[12] Analog Input
X49/1
[13] Analog Input
X49/3
[14] Analog Input
X49/5
154
Function:
The effective feedback signal is made
up of the sum of up to 2 different
input signals.
Select which frequency converter input
should be treated as the source of the
first of these signals. The second input
signal is defined in
parameter PI-22 Process CL Feedback 2
Resource.
(OPCGPIO)
(OPCGPIO)
Function:
The effective feedback signal is made
up of the sum of up to 2 different
input signals. Select which frequency
converter input should be treated as
the source of the second of these
signals. The first input signal is defined
in parameter PI-20 Process CL Feedback
1 Resource.
(OPCGPIO)
(OPCGPIO)
02/2016 All rights reserved.
3.22.4 PI-3# Process PID Control
Parameters to configure the Process PID Controls.
PI-30 Process PID Normal/ Inverse Control
Option: Function:
Normal and inverse controls are implemented by
introducing a difference between the reference
signal and the feedback signal.
[0] Normal Sets process control to increase the output
*
frequency.
[1] Inverse Sets process control to decrease the output
frequency.
PI-31 Process PID Anti Windup
Option: Function:
[0] Off Continues regulation of an error even when the
output frequency cannot be increased or decreased.
[1] On Ceases regulation of an error when the output
*
frequency can no longer be adjusted.
PI-32 Process PID Start Speed
Range: Function:
0 RPM [0 - Enter the motor speed to be attained as a
*
6000 start signal for commencement of PID
RPM] control. When the power is switched on, the
frequency converter starts to ramp and then
operates under speed open-loop control.
When the process PID start speed is reached,
the frequency converter changes to process
PID control.
PI-33 Process PID Proportional Gain
Range: Function:
0.10 [0 - 10] Enter the PID proportional gain. The proportional
*
gain multiplies the error between the setpoint
and the feedback signal.
PI-34 Process PID Integral Time
Range: Function:
10000 s [0.01 - Enter the PID integral time. The integrator
*
10000 s] provides an increasing gain at a constant
error between the setpoint and the
feedback signal. The integral time is the
time needed by the integrator to reach
the same gain as the proportional gain.
PI-35 Process PID Differentiation Time
Range: Function:
0 s [0 - 10 s] Enter the PID differentiation time. The differen-
*
tiator does not react to a constant error, but
provides a gain only when the error changes.
The shorter the PID differentiation time, the
stronger the gain from the differentiator.
DET-618D