Mitsubishi Electric FR-A800, Instruction Manual

Page: 731 / 1042

Parameters (A) Application parameters
FR-A800 5 - 551
●
Example of protective function measured value limit (Pr. 760 = "1")
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.
I002705E
Fig. 5-273: Reaching of pre-charge limit by the measured amount
Classification
First pre-charge function parameters Second pre-charge function parameters
Pr. Name Pr. Name
Parameter
760 Pre-charge fault selection 765 Second pre-charge fault selection
761 Pre-charge ending level 766 Second pre-charge ending level
762 Pre-charge ending time 767 Second pre-charge ending time
763 Pre-charge upper detection level 768
Second pre-charge upper detection
level
764 Pre-charge time limit 769 Second pre-charge time limit
Tab. 5-234: Parameters for setting multiple PID pre-charge functions
Classification
First pre-charge function parameters Second pre-charge function parameters
Signal Name Signal Name
Input signal X77 Pre-charge end command X78 Second pre-charge end command
Output signal
Y49 During pre-charge operation Y50 During second pre-charge operation
Y51 Pre-charge time over Y52 Second pre-charge time over
Y53 Pre-charge level over Y54 Second pre-charge level over
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.
STF
Y49
Y53
ALM
E.PCH
Measured value [PSI]
When Pr. 760 = "1",
output is shut off after the motor decelerates to a stop.
Time
Time
Pr. 127
Pr. 763
Output frequency [Hz]
0 Hz