Reel Change Function - Mitsubishi Electric A800 Plus Series Function Manual

Dancer feedback speed control details
3.5.15

Reel change function

Before starting control with a standby shaft, the line speed command can be fit to the target line speed. Also, a speed bias can
be set.
Pr. Name
620 Line speed bias for reel
R570 change
621 Allowable deviation from
R423 target line speed
∗1 The increment varies depending on the Pr.358 setting.
Reel change function setting
• The reel change function is activated when the following conditions are satisfied.
- Dancer feedback speed control valid
- When Pr.361 Line speed command input selection
- The Reel change (X104) signal is ON.
• Turning ON of the Reel change (X104) signal enables the reel change function. To input the X104 signal, set "104" in any of
Pr.178 to Pr.189 (input terminal function selection) to assign the function.
Line speed bias for reel change (Pr.620)
• When the reel change function is valid (the X104 signal is ON), a speed bias can be set with Pr.620 Line speed bias for
reel change.
• The reel change speed bias can be set as an offset from 1000 m/min.
Pr.620 setting Speed bias for reel change
2000 m/min 1000 m/min
1000 m/min 0 m/min
0 m/min -1000 m/min
• Use Pr.358 Line speed unit to change the unit.
• When the commanded line speed reaches the target line speed after the cushion time while the reel change function is
activated, the Reel change ready (Y236) signal is output.
• For the Y236 signal, set "236 (positive logic) or 336 (negative logic)" in one of Pr.190 to Pr.196 (output terminal function
selection) to assign the function to the output terminal.
NOTE
• The target line speed command is limited in the range of 0 to 6553.4 m/min after the reel change line speed bias is added.
• The reel change speed bias is added after the analog input compensation.
• When the reel change function is invalid (the X104 signal is OFF), the target line speed command value (after reel change
speed bias is added) and the line speed command value after the cushion time are fit to the target line speed command value
before reel change speed bias is added.
Allowable deviation from target line speed (Pr.621)
• An allowable deviation range can be set to the Y236 output condition.
Target line speed command setting
90
DANCER FEEDBACK SPEED CONTROL
Initial value
1000 m/min
∗1
0 m/min
∗1
Line speed (m/min)
Line speed command
(after cushioning)
Y236
Setting range
Reel change line speed bias can be set for the target
0 to 2000 m/min
∗1
line speed.
The Y236 signal output range can be set for the target
0 to 6553.4 m/min
∗1
line speed command.
"9999"
≠
ON
Description
Pr.621
Pr.621
Time