Mitsubishi Electric 800 Series Instruction Manual page 406

 Input/output signals
• Assigning the PID control valid terminal signal (X14) to the input terminal by Pr.178 to Pr.189 (Input terminal function
selection) enables PID control to be performed only when the X14 signal is turned ON. When the X14 signal is OFF,
regular inverter running is performed without PID action. (When the X14 signal is not assigned, PID control is enabled only
by setting Pr.128 ≠ "0".)
• Input signal
Signal Function
X14 PID control valid terminal
X80 Second PID control valid
terminal
PDI1 PID multistage set point
setting 1
PDI2 PID multistage set point
setting 2
PDI3 PID multistage set point
setting 3
X64 During retry
X79 Second PID forward/
reverse action switchover
X72 PID P control switchover
X73 Second PID P control
switchover
• Output signal
Signal Function
FUP PID upper limit
FUP2 Second PID upper limit
FDN PID lower limit
FDN2 Second PID lower limit
RL PID forward/reverse
rotation output
RL2 Second PID forward/
reverse rotation output
PID During PID control
activated
PID2 Second During PID
control activated
Y48 PID deviation limit
Y205 Second PID deviation limit 205
SLEEP PID output interruption
SLEEP2 During second PID output
shutoff
NOTE
• Changing the terminal functions with Pr.178 to Pr.189 and Pr.190 to Pr.196 may affect other functions. Set parameters
after confirming the function of each terminal.
Pr.178 to Pr.189
setting
14 When the signal is assigned to the input terminal, PID control is enabled
when the signal is ON.
80
38 The set point set in Pr.1460 to Pr.1466 can be selected by combining the
ON/OFF status of the signals.
39
40
64 PID control is switched between forward and reverse action without
changing parameters by turning ON the signal.
79
72 Integral and differential values can be reset by turning the signal ON.
73
Pr.190 to Pr.196
setting value
positive negative
logic logic
15 115 Output when the measured value signal exceeds Pr.131 PID upper limit
(Pr.1143 Second PID upper limit).
201 301
14 114 Output when the measured value signal falls below Pr.132 PID lower limit
(Pr.1144 Second PID lower limit).
200 300
16 116 "Hi" is output when the output display of the parameter unit is forward
rotation (FWD), and "Low" is output when the display is reverse rotation
(REV) and stop (STOP).
202 302
47 147 Turns ON during PID control.
When the PID calculation result is reflected to the output frequency (Pr.128
< "2000"), the PID signal turns OFF at turn OFF of the start signal.
203 303
When the PID calculation result is not reflected to the output frequency
(Pr.128  "2000"), the PID signal turns ON during PID calculation
regardless of the start signal status.
48 148 Output when the absolute deviation value exceeds the limit value set in
Pr.553 PID deviation limit (Pr.1145 Second PID deviation limit).
305
70 170 Set Pr.575 Output interruption detection time (Pr.1147 Second output
interruption detection time)  "9999". This signal turns ON when the PID
204 304
output suspension function is activated.
Description
Description
5. PARAMETERS
5.11 (A) Application parameters
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