Mitsubishi Electric 800 Series Instruction Manual page 501

(A) Application parameters
• The second PID function parameters and signals function in the same way as the following parameters and signals of the
first PID function. Refer to the first PID function when setting the second PID functions.
Classification
Pr.
127
128
129
130
131
132
133
Parameter 134
553
554
575
576
577
609
610
Classification
signal
X14
Input signal X64
X72
FUP
FDN
RL
Output signal
PID
SLEEP
Y48
NOTE
• Even if the X14 signal is ON, PID control is stopped and multi-speed or JOG operation is performed when the RH, RM, RL, or
REX signal (multi-speed operation) or JOG signal (JOG operation) is input.
• PID control is invalid under the following settings.
Pr.79 Operation mode selection = "6" (Switchover mode)
• Note that input to the terminal 1 is added to the terminals 2 and 4 inputs. For example when Pr.128 = "20 or 21", the terminal
1 input is considered as a set point and added to the set point of the terminal 2.
• To use terminal 4 and 1 inputs in PID control, set "0" (initial value) to Pr.858 Terminal 4 function assignment and Pr.868
Terminal 1 function assignment. When a value other than "0", PID control is invalid.
• Changing the terminal assignment using Pr.178 to Pr.189 or Pr.190 to Pr.196 may affect other functions. Set parameters
after confirming the function of each terminal.
• When PID control is selected, the minimum frequency becomes the frequency of Pr.902 and the maximum frequency
becomes the frequency of Pr.903.
(The Pr.1 Maximum frequency and Pr.2 Minimum frequency settings also are valid.)
• During PID operation, the remote operation function is invalid.
• When control is switched to PID control during normal operation, the frequency during that operation is not carried over, and
the value resulting from PID calculation referenced to 0 Hz becomes the command frequency.
500
PARAMETERS
First PID function parameters
Name
PID control automatic switchover
frequency
PID action selection
PID proportional band
PID integral time
PID upper limit
PID lower limit
PID action set point
PID differential time
PID deviation limit
PID signal operation selection
Output interruption detection time
Output interruption detection level
Output interruption cancel level
PID set point/deviation input selection
PID measured value input selection
First PID function parameters
Name
PID control valid terminal
PID forward/reverse action switchover
PID P control switchover
PID upper limit
PID lower limit
PID forward/reverse rotation output
During PID control activated
PID output interruption
PID deviation limit
Frequency
command
PID action
Normal operation
Operation when control is switched to PID control during normal operation
Second PID function parameters
Pr.
754
753
756
757
1143
1144
755
758
1145
1146
1147
1148
1149
1140
1141
Second PID function parameters
signal
X80
X79
X73
FUP2
FDN2
RL2
PID2
SLEEP2
Y205
PID set point
Frequency command
during normal operation
ON
PID operation Normal operation
Name
Second PID control automatic switchover
frequency
Second PID action selection
Second PID proportional band
Second PID integral time
Second PID upper limit
Second PID lower limit
Second PID action set point
Second PID differential time
Second PID deviation limit
Second PID signal operation selection
Second output interruption detection time
Second output interruption detection level
Second output interruption cancel level
Second PID set point/deviation input
selection
Second PID measured value input selection
Name
Second PID control valid terminal
Second PID forward/reverse action
switchover
Second PID P control switchover
Second PID upper limit
Second PID lower limit
Second PID forward/reverse rotation output
Second During PID control activated
During second PID output shutoff
Second PID deviation limit