Mitsubishi Electric FR-A820-00046 Instruction Manual page 731

Parameters
● Example of protective function measured value limit (Pr. 760 = "1")
Fig. 5-273:
Setting multiple PID pre-charge functions
● When the second pre-charge function is set, two sets of pre-charge functions can be switched for
use. The second pre-charge function is enabled by turning ON the RT signal.
● The second pre-charge function parameters and signals function in the same way as the following
parameters and signals of the first pre-charge function. Refer to the first pre-charge function when
setting the second pre-charge functions.
Classification
Parameter
Tab. 5-234: Parameters for setting multiple PID pre-charge functions
Classification
Input signal
Output signal
Tab. 5-235: I/O signals for multiple PID pre-charge functions
NOTES The second PID pre-charge function is valid also when the first pre-charge function is set to invalid
and the second pre-charge function is set.
When "10" (second function enabled only during constant-speed operation) is set to Pr. 155, the
second PID function is not selected even if the RT signal turns ON.
FR-A800
Measured value [PSI]
Pr. 763
Output frequency [Hz]
Pr. 127
0 Hz
STF
Y49
Y53
ALM
Reaching of pre-charge limit by the measured amount
First pre-charge function parameters
Pr. Name
760 Pre-charge fault selection
761 Pre-charge ending level
762 Pre-charge ending time
763 Pre-charge upper detection level
764 Pre-charge time limit
First pre-charge function parameters
Signal Name
X77 Pre-charge end command
Y49 During pre-charge operation
Y51 Pre-charge time over
Y53 Pre-charge level over
When Pr. 760 = "1",
output is shut off after the motor decelerates to a stop.
E.PCH
Second pre-charge function parameters
Pr.
765
766
767
768
769
Second pre-charge function parameters
Signal
X78
Y50
Y52
Y54
(A) Application parameters
Time
Time
Name
Second pre-charge fault selection
Second pre-charge ending level
Second pre-charge ending time
Second pre-charge upper detection
level
Second pre-charge time limit
Name
Second pre-charge end command
During second pre-charge operation
Second pre-charge time over
Second pre-charge level over
I002705E
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