Dancer Control - Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual

• 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 the turning ON 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
Classification
Input signal
Output signal
NOTE
• 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.

5.14.13 Dancer control

PID control is performed using detected dancer roll position as feedback data. The dancer roll is controlled to be at a designated
position.
Pr. Name
44 Second acceleration/
F020 deceleration time
590
5. PARAMETERS
5.14 (A) Application parameters
Measured value[PSI]
Pr.763
Output frequency[Hz]
Pr.127
0Hz
STF
Y49
Y53
ALM
First pre-charge function parameters
Pr.
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
X77 Pre-charge end command
Y49 During pre-charge operation
Y51 Pre-charge time over
Y53 Pre-charge level over
Initial value Setting range
5 s 0 to 3600 s
When Pr.760 = "1",
output is shut off after the motor decelerates to a stop.
E.PCH
Name Pr.
765
766
767
768
769
Name Signal
X78
Y50
Y52
Y54
Set the acceleration/deceleration time during dancer control.
In dancer control, this parameter becomes the acceleration/deceleration
time of the main speed.
This setting does not operate as the second acceleration/deceleration time.
Time
Time
Second pre-charge function parameters
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
Second pre-charge function parameters
Name
Second pre-charge end command
During second pre-charge operation
Second pre-charge time over
Second pre-charge level over
Description