7. WEB Control Application
7-29
Tension Reference taking Taper, Boost, and Stall into account
8) WEB_26 Tension Ramp : Setting of Ramp in Tension Reference Input
When the machinery starts, Web is in loose state because of lower tension. Therefore the sudden tension
command at earlier operation stage may cause unexpected change in tension. To avoid such phenomenon when
the command value of loadcell or dancer is applied to the step, the change can be led in smooth manner so that
the normal PID controller movement can be carried out by setting the ramp time of the tension input command
value. If WEB_26 Tension Ramp is set to 10.0[sec], and the final PID command set to 50[%], the tension command
will operate as shown in the Figure 15.
Function
Code
Loader Display Name of Function Set Range Unit
Factory
Default
WEB_26 Tension Ramp
Ramp Time of Tension
Reference Input
0.00 ~ 600.00 sec 5.00
Taper Input(WEB_21)
Core Size
Diameter
Taper Type
On
Taper Disable (P1 ~ P7)
Boost Input (WEB_23)
WEB_22
Boost Type
Stall Input (WEB_25)
WEB_24
Stall Type
None
Tension set point
0%
Stall Enable (P1 ~ P7)
0%
Boost Enable (P1 ~ P7)
Taper Calculator
WEB_20
Hyperbolic
Linear
Off
Tension Input(WEB_19)
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