Tension Controller TC818
5.2.2.1 Thick Sum
5.2 Roll radius monitoring
5.2.1 Proximity switch and encoder connections
5.2.2 Methods of measurement
Reel A pulse*
Reel B pulse*
Main roller pulse*
24V
DI0
DIA
DIB
GND
*
NPN pulse
Thickness[02]t
Init Radius[01]R1
Current radius R
Proximity switch/Encoder
Wind Mode[40]=Wind
Pulse N2[37]
/
r
32.Rad Detection
Thick Sum
Ratio
▲
There are two methods available for monitoring the roll radius:
Thick Sum
and Ratio.
According to the configuration of the encoder, please choose the proper
method for the specific system.
The “T
parameters:
3. Max Radius[33] The maximum radius of the roll, set the proper value according to the real condition.
4. Min Radius[34] The minimum radius of the roll, set the proper value according to the real condition.
5. Pulse N2[37] Pulses/revolution of the material roll.
6. Calc Cycle[38] When the sum of pulses reach Calc Cycle[38], the calculation of radius will be updated once.
7. Wind Mode[40] This affect the behavior of increment and decrement of radius, in winding systems, radius increases
while in unwinding system, radius decreases.
hick Sum” method will use the following
1. Init Radius[01] The initial radius, this value can be reset when in password screen by pressing
LOCK
key, the
radius will be reset to Init Radius[01] automatically when reel exchange is performs.
2. Thickness[02] The real thickness of the material(web), in mm.
The controller counts the pulses generated by the
proximity switch which mounted on the material roll,
with the total pulses N and Init Radius[01] R1, the roll
radius R can be got according to the following formula:
Wind: R = R1 + t*(N/N2)
Unwind: R = R1 - t*(N/N2)
R: Current roll radius
R1:
Init Radius[01]
t: Material
Thickness[02]
N: Total pulses
N2:
Pulse N2[37]
/r
25
