Mitsubishi Electric FR-F820-00046, Instruction Manual

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Parameters (A) Application parameters
FR-F800 5 - 385
5.11.8 PID pre-charge function
This function drives the motor at a certain speed before starting PID control. This function is useful for
a pump with a long hose. Without this function, PID control would start before the pump is filled with
water, and proper control would not be performed.
Pr. Name
Initial
value
Setting
range
Description
760
A616
Pre-charge fault selection 0
0
Fault indication with output shutoff immediately after
pre-charge fault occurs.
1
Fault indication with deceleration stop after pre-charge
fault occurs.
761
A617
Pre-charge ending level 9999
0 to 100%
Set the measured amount to end the pre-charge
operation.
9999 Without pre-charge ending level
762
A618
Pre-charge ending time 9999
0 to 3600 s Set the time to end the pre-charge operation.
9999 Without pre-charge ending time
763
A619
Pre-charge upper
detection level
9999
0 to 100%
Set the upper limit for the pre-charged amount. A pre-
charge fault occurs when the measured value exceeds
the setting during pre-charging.
9999 Without pre-charge upper limit level
764
A620
Pre-charge time limit 9999
0 to 3600 s
Set the time limit for the pre-charged amount. A pre-
charge fault occurs when the pre-charge time exceeds
the setting.
9999 Without pre-charge time limit
1132
A626
Pre-charge change
increment amount
9999
0 to 100%
Set the change increment amount per second after the
automatic switchover frequency is reached. (for vertical
pumps).
9999
Constant-speed operation after the automatic
switchover frequency is reached (for horizontal pumps).
765
A656
Second pre-charge fault
selection
0 0, 1 Refer to Pr. 760.
Set the second pre-charge
function.
The second pre-charge function is
valid when the RT signal is ON.
766
A657
Second pre-charge ending
level
9999
0 to 100%,
9999
Refer to Pr. 761.
767
A658
Second pre-charge ending
time
9999
0 to 3600 s,
9999
Refer to Pr. 762.
768
A659
Second pre-charge upper
detection level
9999
0 to 100%,
9999
Refer to Pr. 763.
769
A660
Second pre-charge time
limit
9999
0 to 3600 s,
9999
Refer to Pr. 764.
1133
A666
Second pre-charge change
increment amount
9999
0 to 100%,
9999
Refer to Pr. 1132.