LS Industrial Systems SV-iV5 Series - Tension Reference Input Setting (Compulsory)

7. WEB Control Application
7-9
Figure 4.
Roll Rotating Direction at the time of Unwind/Overwind Setting, Forward Direction Operation Command
7.4.12 tension Reference input Setting (Compulsory)
In case of using loadcell for tension control sensor, tension reference is used for setting the set point of actual
tension. In this case, final tension Reference, the output of set block becomes the reference input of PID control.
When not using Taper function, Boost function, and Stall function, tension reference input value becomes the
reference input of PID control. Tension reference input setting constitute three methods; by keypad, by analog
input, and by communication. The sum of the values from these three method is input, that is the sum of WEB_19
Tension input + Analog input + communication. Furthermore, upper/lower limit is restricted within the range of –
100.0 % ~ 100.0 %. At this time, WEB_28 PIDRef Sel should be set to “Taper Out”. If dancer is used, it means
controlling the position of dancer rather than actual tension. Therefore if WEB_28 PIDRef Sel is set to “Dancer Pos”,
the value set in tension input reference input is meaningless. If dancer taper function is used where analog
output(AIO_74, AIO_79) is set to “Tension Out”, its usage is meaningful. For the dancer position, like in the case of
tension reference, the sum of WEB_29 Dancer Pos + Analog input + communication is input
① Tension Reference Input Setting by Keypad (In case of using loadcell)
To conduct tension reference input setting by keypad, you may set WEB_19 Tension Input.
② Tension Reference Input Setting
by Analog Input (In case of using loadcell)
To conduct tension reference input setting
by analog input, you may set one of Analog input AIO_01 Ai1
Define, AIO_13 Ai2 Define, and AIO_25 Ai3 Define to “Tension Ref”.
W
EB▶ TensionInput
19 50.0 %
A
IO▶ Ai1 Define
01 Tension Ref
Motor
Unwind(Under wind) with Forward Run command
Line Direction
Reverse
direction
PID output
X
Line Speed
command
X
Speed
Feedback
ASR
Motor
Speed
making
X
Splicing %
Unwin
der