Megmeet MV300 Series - Page 200

200
Adjust the gain coefficient of the ultimate output, ultimate PID output = PID output x PID output gain.
It has an obvious effect when it is used for adjusting the compensation dosage.
0: When PID output is negative, force PID output to be set as 0.
1: When PID output is negative, keep the negative output.
Note: If PID output serves as the speed correction, please select 1.
Properly setting PID preset frequency and preset frequency retention time can make the closed loop
adjustment quickly enter into stable stage.
After PID operation, the frequency will accelerate to PID preset frequency firstly according to acceleration
/ deceleration time. And it operates according to PID adjustment output only after its continuous operating
time at this frequency point reaches the time set by P14.24.
Fig. 6-69 Schematic diagram of PID preset frequency running
Unit place: PID feedbacks the fault detection selection
0: Continue to run, no alarm
1: Continue to run and display “AL.FbL” (feedback lost) or “AL.Fbo” (feedback exceeding limit)
2: Coast to stop and display “Er.FbL” (feedback lost) or “Er.Fbo” (feedback exceeding limit)
Note: Once a PID feedback fault occurs (feedback lost or feedback exceeding limit), the multi-functional
output terminals of the corresponding “feedback loss” and “feedback exceeding limit” will output.
Tens place: PID limit setting error processing selection
0: Continue to run, no alarm
1: Continue to run and display “AL.PIL”
2: Coast to stop and display “Er.PIL”
When the set PID lower limit is greater than PID upper limit , wrong PID limit value setting will occur.
PID feedback loss detection value 0.0~100.0
(
0.0%
)
P14.26
PID faul
t
detection selectio
n
00~22H
(
00
)
P14.25
PID
p
reset fre
q
uenc
y
hold time 0.0~3600.0s
(
0.0s
)
P14.24
PID
p
reset fre
q
uenc
y
0.00~3000.00Hz
(
0.00 Hz
)
P14.23
REV selection of PID out
p
u
t
0~1
(
1
)
P14.22