Mitsubishi Electric FR-F820-00046 Instruction Manual page 46

For reverse action
Input pressure
Input pressure warning level
(Pr.1378)
Input pressure fault level
(Pr.1379)
Set point
Y229
Y230
Output frequency
NOTE
• When the control switches between the first PID control and second PID control while the set point is changed by
the Pr.1380 setting value or while the Y229/Y230 signal is output, the set point returns to its original value or the
signal turns OFF, and the detection restarts.
• When the PID input pressure control function and the PID upper/lower limit pre-warning function are used
simultaneously, each function may change the set point. When the set point change is attempted by both functions,
the change by the PID input pressure control function has priority.
• When the PID input pressure control function and the PID sleep boost function are used simultaneously, each
function may change the set point. When the set point change is attempted by both functions, the change by the
PID input pressure control function has priority. (The sleep state is established without applying the set point
change by the PID sleep boost function.)
Input pressure
Pr.1370 Pr.1370 Pr.1370 Pr.1370 Pr.1370 Pr.1370
Pr.1380
Pr.1373 Pr.1373
ON
Pr.1370 Pr.1370 Pr.1370
ON
When Pr.1381 = "0"
When Pr.1381 = "1"
Output shutoff
(Pr.1381 = "0")
12
Time
Time
ON
Deceleration stop Deceleration stop Deceleration stop
(Pr.1381 = "1") (Pr.1381 = "1") (Pr.1381 = "1")
Time
When Pr.1381="1", operation can be
restarted after the input pressure
reaches or exceeds the Pr.1378 setting.
BCN-C22005-703