Mitsubishi Electric 800 Series, Инструкция по эксплуатации, Страница: 495 / 727

(A) Application parameters
494
PARAMETERS
 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
• Output signal
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.
Signal Function
Pr.178 to Pr.189
setting
Description
X14 PID control valid terminal 14
When the signal is assigned to the input terminal, PID control is enabled
when the signal is ON.
X80
Second PID control valid
terminal
80
X64
PID forward/reverse
action switchover
64
PID control is switched between forward and reverse action without
changing parameters by turning ON the signal.
X79
Second PID forward/
reverse action switchover
79
X72 PID P control switchover 72
Integral and differential values can be reset by turning the signal ON.
X73
Second PID P control
switchover
73
Signal Function
Pr.190 to Pr.196
setting value
Description
positive
logic
negative
logic
FUP PID upper limit 15 115
Output when the measured value signal exceeds Pr.131 PID upper limit
(Pr.1143 Second PID upper limit) . FUP2 Second PID upper limit 201 301
FDN PID lower limit 14 114
Output when the measured value signal falls below Pr.132 PID lower
limit (Pr.1144 Second PID lower limit) . FDN2 Second PID lower limit 200 300
RL
PID forward/reverse
rotation output
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).
RL2
Second PID forward/
reverse rotation output
202 302
PID
During PID control
activated
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.
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.
PID2
Second During PID
control activated
203 303
SLEEP PID output interruption 70 170
Set Pr.575 Output interruption detection time (Pr.1147 Second output
interruption detection time)

"9999". This signal turns ON when the
PID output suspension function is activated.
SLEEP2
During second PID output
shutoff
204 304