Reel Diameter Internal Calculation Method; External Reel Diameter Signal Method; Taper Rate Setting - Mitsubishi LE-30CTN Instruction Manual

5. Automatic Operation and Functions
5.4.3

Reel diameter internal calculation method

• Tension characteristics - - - - - - - - - - Refer to the figure as right.
[1] While regarding the tension obtained at 0 mm reel
diameter (virtual winding diameter) as 100% (set tension),
the controller reduces the target tension as the reel
diameter increases.
Since the reel diameter is larger than 0 mm when starting
the winding operation, the target tension will be smaller
than the set tension at starting operation.
[2] When the control output of this controller is 100%, the
torque generated by the actuator will be regarded as
Tmax. The target tension is reduced depending on the
winding diameter as shown in the right figure.
5.4.4

External reel diameter signal method

• The reel diameter signal function is assigned to the AI1 or AI2
input terminals. Depending on the obtained reel diameter, 0 to 5
V signal will be associated (0 V for minimum diameter, 5 V for
maximum diameter).
• The target tension will be subject to change depending on the
winding diameter signal as shown in the right figure (linear
characteristic).
• To use the reel diameter signal, select item number 51 in the
adjustment mode, and then assign it to the reel diameter signal
function to the AI1 or AI2 terminal. - - - - - - - - - Refer to Sec. 6.2.
5.4.5

Taper rate setting

• Set the taper rate using one of the following methods.
[1] Set the taper rate using the taper rate setting screen.
[2] Set the taper rate using the external analog voltage signal.
• When the taper rate setting signal function is assigned to either [AI1] or
[AI2], the taper rate cannot be set by using the setting dial(16) on the
panel.
30
• On the normal operation mode screen, press the function key
rate setting screen, and then set the taper rate using the setting dial(16).
Operation screen
F1 F2 F3
(ex.) From tension setting screen in automatic
operation mode to taper rate setting screen.
• Assign the taper rate setting signal to either [AI1] or [AI2], and set the taper rate using this
signal.
• Reel diameter internal calculation method
Input voltage = 0 to 5 V → Taper rate = 0 to 80%
• External reel diameter signal method
Input voltage = 0 to 5 V → Taper rate = 0 to 100%
• To use the taper rate setting signal, select item number 51
in the adjustment mode, and then assign the taper rate
setting signal function to the [AI1] or [AI2] terminal.
- - - - - - - - - - - - - - - - Refer to Sec. 6.2.
Taper rate setting screen
F4
5.4 Taper control function
Ttaper set rate τ = 0%
1.0
0.8
0.6
0.4
0.2
Tmax(maximum actuator torque)
Dmax=2
FS(full-scale tension)
0
0 0.2 0.4 0.6 0.8
D(current diameter)
Dmax(maximum diameter)
Ttaper set rate τ = 0%
1.0
0.8
0.6
0.4
0.2
0
0 1 2 3 4
Reel diameter
Minimum
signal (V)
diameter
to move to the taper
External reel diameter
signal method
100
80
60
40
20
Reel diameter internal
calculation method
0
0 1 2
taper rate setting signal (V)
τ =25%
τ =50%
τ =80%
1.0
τ =20%
τ =40%
τ =60%
τ =80%
τ =100%
5
Maximum
diameter
3 4 5