Mitsubishi Electric FR-A820-00046 (0.4K), Instruction Manual

Page: 754 / 1218

(A) Application parameters Parameters
5 - 552
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.
●
Input signal
●
Output signal
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 During retry 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
Tab. 5-227: Input signals and parameter settings
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 exceeds 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 not 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 reflected to the output
frequency (Pr. 128
≥
"2000"), the PID signal turns ON regardless of
the start signal status during PID calculation.
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
Tab. 5-228: Output signals and parameter settings
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.