System Configuration Example; Control Block Diagram - Mitsubishi Electric A800 Plus Series Function Manual

System configuration example

4.2
System configuration example
M
FR-A800-R2R
FR-A8AP
Line speed
command
2
Dancer/tension
control selection
X114
Start signal
STF/STR
AM
4.3

Control block diagram

PID action
set point
(Pr.133)
Dancer signal /
tension feedback
Tension
input selection
feedback
Pr.363
Actual line speed
Actual
input selection
line speed
Pr.362
Line speed
Line speed
command selection
command
Pr.361
98
TENSION SENSOR FEEDBACK SPEED CONTROL
Tension sensor
Encoder
Line speed command
X116-OFF
+
PID operation
Pr.129, Pr.130,
-
Pr.134
0
X116-ON
Winding diameter X115-OFF
calculation
Pr.1235, Pr.1236,
Pr.1243, Pr.1244
Held
X115-ON
Line speed command Winding diameter
Acceleration
/deceleration speed generation
Pr.394, Pr.395 Conversion from line
speed to frequency
∗1 Winding diameter compensation speed =
∗2 After clearing, the value becomes the minimum winding diameter when Pr.1230 = "0" (winding),
and the maximum winding diameter when Pr.1230 = "1" (unwinding).
Maximum
diameter
Dancer/tension control selection
Stored winding diameter clear
Winding length clear
Tension feedback
Line speed command
Pr.363 = 9999
0
+
Pr.363 = 9999 Pr.128 = 40, 41
+
X109-OFF
Winding diameter
Winding
diameter
∗2
clear
X109-ON
Winding diameter
compensation
speed∗1
compensation
Frequency
setting
π × Winding diameter × Gear ratio
M
FR-A800-R2R
FR-A8AP
X114 (Pr.180 = 114)
X109 (Pr.181 = 109)
X117 (Pr.182 = 117)
Start signal
STF/STR
1 (Pr.363 = 5)
2 (Pr.361 = 3)
For winding roll (Pr.1230 = 0)
Speed control proportional
gain compensation
Pr.639 to Pr.644
X114-ON
Pr.128 = 0
X114-OFF
Motor speed
Line speed command
Minimum
diameter
Encoder
Speed
M
control
Acceleration
Encoder
/deceleration
Pr.7, Pr.8 = 0