[145]
ft
[160]
°F
[170]
psi
[171]
lb/in
2
[172]
in WG
[173]
ft WG
[174]
in Hg
[180]
HP
This parameter determines the unit that is used for the setpoint reference and feedback that the
PID Controller will use for controlling the output frequency of the frequency converter.
20-21 Setpoint 1
Range:
Function:
0.000 Proc-
essCtrlU-
nit*
[-999999.999 - 999999.999 Proc-
essCtrlUnit]
Setpoint 1 is used in Closed Loop Mode to enter a setpoint reference that is used by the frequency
converter’s PID Controller. See the description of par. 20-20
Feedback Function
.
NB!
Setpoint reference entered here is added to any other references that are enabled
(see par. group 3-1*).
20-81 PID Normal/Inverse Control
Option:
Function:
[0] *
Normal
[1]
Inverse
Normal
[0] causes the frequency converter’s output frequency to decrease when the feedback is
greater than the setpoint reference. This is common for pressure-controlled supply fan and pump
applications.
Inverse
[1] causes the frequency converter’s output frequency to increase when the feedback is
greater than the setpoint reference.
20-82 PID Start Speed [RPM]
Range:
Function:
Application
dependent*
[Application dependant]
20-93 PID Proportional Gain
Range:
Function:
2.00*
[0.00 - 10.00 ]
If (Error x Gain) jumps with a value equal to what is set in par. 20-14
Maximum Reference/Feedb.
the PID controller will try to change the output speed
equal to what is set in par. 4-13
/par. 4-14
Motor Speed High Limit [Hz]
but in practice of course limited by this setting.
The proportional band (error causing output to change from 0-100%) can be calculated by means of the formula:
(
1
Proportional
Gain
)
× (
Max
Reference
)
NB!
Always set the desired for par. 20-14
Maximum Reference/Feedb.
before setting the values for the PID controller in par. group 20-9*.
8 How to Programme the Frequency Converter
Automation VT Drive FC322
Instruction Manual
106
MG.20.U1.22
8
Содержание FC322 Series
Страница 6: ...2 Safety Automation VT Drive FC322 Instruction Manual 6 MG 20 U1 22 2 ...
Страница 14: ...4 Mechanical Installation Automation VT Drive FC322 Instruction Manual 14 MG 20 U1 22 4 ...
Страница 103: ...Automation VT Drive FC322 Instruction Manual 8 How to Programme the Frequency Converter MG 20 U1 22 103 8 ...
Страница 154: ...9 Troubleshooting Automation VT Drive FC322 Instruction Manual 154 MG 20 U1 22 9 ...
Страница 163: ...10 Specifications Automation VT Drive FC322 Instruction Manual 10 Specifications MG 20 U1 22 163 10 ...