Pid Control (Pr. 128 To Pr. 134) - Mitsubishi Electric FR-E520 Instruction Manual

4.2.37 PID control (Pr. 128 to Pr. 134)

Pr. 128 "PID action selection"
Pr. 129 "PID proportional band"
Pr. 130 "PID integral time"
Pr. 131 "upper limit"
Pr. 132 "lower limit"
Pr. 133 "PID action set point for PU
operation"
Pr. 134 "PID differential time"
The inverter can be used to exercise process control, e.g. flow rate, air volume or
pressure.
• The voltage input signal (0 to ±5V or 0 to ±10V) or Pr. 133 setting is used as a set
point and the 4 to 20mA DC current input signal used as a feedback value to
constitute a feedback system for PID control.
Parameter
Number
128
129
130
131
132
133
134
<Setting>
(1) Basic PID control configuration
Pr. 133 or Treminal 2
Set point
0 to ±5 (0 to ±10) VDC
Factory
Setting Range
Setting
0
100% 0.1 to 1000%, 9999
1s 0.1 to 3600s, 9999
9999 0 to 100%, 9999
9999 0 to 100%, 9999
0%
9999 0.01 to 10.00s, 9999
Inverter circuit :
+ -
Terminal 4
Feedback signal (Process value)
Kp: Proportion constant
Related parameters
Pr. 73 "0-5V/0-10V selection"
Pr. 79 "operation mode selection"
Pr. 180 to Pr. 183 (input
terminal function selection)
Pr. 190 to Pr. 192 (output terminal
function selection)
Pr. 902 to Pr. 905 (frequency
setting voltage (current)
biases and gains)
0, 20, 21
0 to 100%
PID operation
1
1+ +Td S
Kp
Ti S
Ti: Integral time S: Operator
148
PARAMETERS
Remarks
9999: No proportional
control
9999: No integral control
9999: Function invalid
9999: Function invalid
9999: No differential control
Motor
Manipulated
IM
variable
4 to 20mADC
Td: Differential time