7. WEB Control Application
7-39
7.7.10 Up to Speed Setting
1) WEB_52 UTS Enable : Up to Speed Judgment Setting
2) WEB_53 UTS Level : Up to Speed Level Setting
When Web control is operates in smooth manner, the line speed command is almost similar to the actual line
speed. It is because Process PID controller operates reducing such deviation when there occurs the deviation
between line speed command and actual line speed. However, too quick line speed command, problem of the
motor or mechanical problem can lead to the discrepancy of the line speed command. This may cause serious
problem to the system. WEB_52 UTS Enable and WEB_53 UTS Level are the functions to judge such situations. If
the deviation between line speed command and actual line speed is larger than WEB_53 UTS Level, and one of
multi-function output DIO_41 AX1 Define ~ DIO_43 OC1 Define is set to “Up to Spd”, it can be acknowledged when
you let out the output contact point. WEB_53 UTS Level is the [%] value against the line speed command. It has
2[%] Band to avoid chattering. If the set value of WEB_53 UTS Level is too low, fault operation may
happen by the excessive state even near the set level.
Function
Code
Loader Display Name of Function Set Range Unit
Factory
Default
WEB_52 UTS Enable
Up to Speed Judgment
Setting
No
Yes
No
WEB_53 UTS Level Up to Speed Level Setting 0.0 ~ 100.0 % 0.0
. Up to Speed Block Diagram
7.7.11 WEB_54 Quick Stop : Quick Stop Time Setting
It is the function where emergency stop is available when the emergency occurs during sequential operation. If the
multi-function input terminal (DIO_01 ~ DIO_07) set to “Quick Stop” is On, it conducts emergency stop maintaining
the tension of web for the same deceleration time regardless of the current motor rotating speed, that is, the period
of time set to WEB_54 Quick Stop. Even after it completely stopped, the tension of the web is still kept. For example,
if the winder roll speed is 170[rpm] and the gear ratio is 10:1, the motor rotating speed is 1700[rpm]. If unwinder
Line Speed from reference block
Min Diameter (WEB_10)
Diameter from diameter block
UTS Level (WEB_54)
Reel Speed f/b from feedback block
UTS Output
To AUX
[%]
)10_([%]
[%]Re
Diameter
WEBDiameterMin
Speedel
×
X
X < Y
Y
0
UTS Enable (WEB_53)
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