PARAMETERS
151
#
PID control
PID actions are performed as set in Pr. 128 to Pr. 134 (PID control). (Refer to page 122)
In this advanced PID control, a voltage input (0 to
±
5V or 0 to
±
10V) may also be used as a process value.
<Setting>
Advanced PID control configuration
Pr.128 = 10, 11
+-
IM
Kp: Proportion constant Ti: Integral time S: Operator Td: Differential time
Set point
Deviation signal
Manipulated
variable
Motor
Feedback signal (Process value)
Inverter circuit :
Ti S
1
1+
+Td S
Kp
PID operation
Terminal 1
External
to Inverter
Pr.128 = 20, 21
+-
IM
Kp: Proportion constant Ti: Integral time S: Operator Td: Differential time
Set point
Manipulated
variable
Motor
Feedback signal (Process value) 4 to 20 mA
Inverter circuit :
Ti S
1
1+
+Td S
Kp
PID operation
Terminal 4
Pr. 133 or Treminal 2
0 to ±5
(0 to ±10)
VDC
* Input the process value of 4 to 20 mA at No.4 terminal.
Pr.128 = 30, 31
+-
IM
Kp: Proportion constant Ti: Integral time S: Operator Td: Differential time
Set point
Manipulated
variable
Motor
Feedback signal (Process value) 0 to ±10 (0 to ±5) VDC
Inverter circuit :
Ti S
1
1+
+Td S
Kp
PID operation
Terminal 1
Pr. 133 or Treminal 2
0 to ±5
(0 to ±10)
VDC
* Input the process value of 0 to ±10VDC (0 to ±5VDC) at No.1 terminal.
Parameter Number
Name
Setting
Description
10
11
20
21
Refer to page 126.
30
PID reverse action
128
PID action
selection
31
Set point (terminal 2 or Pr.133), Process
value input, (terminal 1)
PID forward action
#
PID forward-reverse action switching function
Use the X24 signal to switch between the forward and reverse actions under the control of the external
signal. Assign the signal X24 to any terminal using any of Pr. 180 to Pr. 186 (input terminal function
selection). (Refer to page 140)
Parameter Number
Name
Setting Range
Description
180 to 186
Input terminal function
selection
24
X24 signal
•
At PID reverse action setting (Pr. 128 = 10, 20, 30): Turning on the X24 signal starts a forward action.
A reverse action is performed when the X24 signal is off.
•
At PID forward action setting (Pr. 128 = 11, 21, 31): Turning on the X24 signal starts a reverse action.
A forward action is performed when the X24 signal is off.
4
Summary of Contents for FR-F500 Series
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