Mitsubishi Electric FR-F820-00046 Instruction Manual page 444

• When the deviation remains at the Pr.577 setting or higher for the time set in Pr.1368 Output interruption cancel time,
the inverter output restarts.
For reverse action
Measured value
Set point
Deviation
Pr.577 - 1000%
Output frequency
Pr.576
Less than Pr.575
PID
ON
SLEEP
 Check valve deceleration function (Pr.111 and Pr.1369)
• When the pump is stopped, slow deceleration can be applied to the predetermined section to prevent the water hammer
sound caused by closing the valve.
• The Pr.111 Check valve deceleration time setting is applied to the section between Pr.2 Minimum frequency and
Pr.1369 Check valve closing completion frequency.
Output frequency
Pr.127
(Pr.754)
Pr.2
Pr.1369
STF ON
PID
NOTE
• The check valve deceleration function is enabled when the PID setting is applied to the frequency.
• When the Pr.1369 setting is higher than the Pr.2 setting, the normal deceleration time (Pr.8 or Pr.45) setting is applied.
 PID upper/lower limit pre-warning (Pr.1370 to Pr.1373)
• The set point can be changed to suppress increases of the measured value before PID upper limit (FUP) or PID lower limit
(FDN) is detected.
• When the measured value reaches and remains at the pre-warning level set in Pr.1371 PID upper/lower limit pre-
warning level range for the time set in Pr.1370 Detection time for PID limiting operation, the PID upper/lower limit pre-
warning (Y219) signal or the Second PID upper/lower limit pre-warning (Y220) signal is output. Also, the set point is
changed by the amount set in Pr.1372 PID measured value control set point change amount.
• Set the rate (%/s) in Pr.1373 PID measured value control set point change rate for changing the set point by the Pr.1372
setting value. When the measured value falls within the normal range, the set point returns to its original value.
• For the Y219 and Y220 signals, assign the functions to output terminals using the Pr.190 to Pr.196 (Output terminal
function selection).
Output signal
Y219
Y220
Sleep boost waiting time
(Pr.1367)
Sleep boost level
(Pr.1366)
Pr.575 or more
ON
Pr.190 to Pr.196 setting
Positive logic
219
220
The sleep status starts when the
deviation becomes 0 during the time
set in Pr.1367.
Output interruption cancel time
(Pr.1368)
Sleep period Sleep period Sleep period
ON
Normal deceleration time setting
Check valve deceleration time setting
Pr.8 Pr.111
(Pr.45)
Negative logic
319
320
Cancel level
Time
Normal deceleration
time setting
Time
Pr.8
(Pr.45)
5. PARAMETERS
5.11 (A) Application parameters
1
2
3
4
5
6
7
8
9
10
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