•
Programmable analog inputs: Inputs 53 and 54
are analog inputs with a voltage range of 0–10 V
DC or a current range of 0/4–20 mA. Use
6-19 Terminal 53 mode
and
6-29 Terminal 54 mode
to configure the inputs. The source of the tension
and taper setpoints can be adjusted by either
analog inputs or parameter setting. Only analog
inputs can be used for tension feedback and
initial diameter measurement. Use parameters to
select the source of each input. Do not program
a single input for more than one functions.
•
Initial diameter measurement: 3 starting
diameters can be set and logically selected. For
applications where the starting diameter changes
regularly, the winder allows the initial diameter to
be measured through an analog input signal.
Scaling parameters are provided to set the analog
level at core and at full roll. This function
assumes a linear change in the diameter
measurement signal.
•
End-of-roll detection: The frequency converter
generates an output to indicate a preset diameter
limit is met. This output can be used to stop
winding for a roll change.
•
Tension limit detector: The winder includes a
tension limit detection (TLD) feature. This feature
allows the winding machine to trip if a low-
tension or high-tension feedback exists for a
period of time. The trip delay includes a normal
running delay as well as a secondary starting
delay.
3.2 Application Requirements
For the center winder system to operate properly, the
following requirements must be met:
•
Winder motor
The motor needs to be frequency converter duty
with a wide speed range (>100:1). The motor
should be geared or belted so that top motor
speed at core does not exceed 4500 RPM.
Generally, the maximum constant-horsepower
speed of the motor is the limiting factor.
•
Tension feedback
The tension feedback is provided from either a
load cell or a dancer. If a load cell is used, it
needs to be calibrated for a either a 0-20 mA or
0-10 V signal for 0 to maximum tension. If a
dancer is used, the calibration should be 0–20
mA/0–10 V for bottom-to-top of the dancer
movement.
•
Logic inputs
Digital inputs are used as signals for statuses
such as tension-on, over-tension, or under-
tension. They are 24 V DC sinking inputs, and
only necessary when used for controlling. The
frequency converter has a 24 V DC/200 mA
supply available if dry contacts are used. It is
possible to access logic parameters through
PROFIBUS.
•
Tension and taper setpoints
The tension and taper setpoints are available on
the display of the local control panel (LCP) as
parameters. They can also be set using 0–20 mA
or 0–10 V DC input, or via PROFIBUS.
Parameter
Value or range
Maximum winder motor
speed
4500 RPM
Tension loop control cycle
16 ms
TLD time resolution
25 ms
Quick stop scan time
1 ms
Coast scan time
<1 ms
MCB 102 frequency
100–410000 Hz
24 V encoder frequency
4–32000 kHz
Digital inputs
24 V DC, sinking
Analog tension and taper
setpoints
0–10 V DC, 0–20 mA DC
Load cell or dancer feedback 0–10 V DC, 0–20 mA DC
Table 3.1 Recommended Parameter Settings
Line speed
Create or simulate a line speed signal of winder mode.
Ensure that
18-83 Line Speed
shows the correct feed-
forward speed, which is a positive value. Otherwise check
wiring and the parameters in parameter group 17.
Winder speed
Have the motor run in the direction of winding mode.
Confirm that parameter
16-05 Main Actual Value [%]
shows
the correct motor speed, which is a positive value.
Tension feedback
Create or simulate a tension on the web. Confirms that
18-86 Tension Feedback
shows the correct tension value.
Otherwise check parameters 6-10 to 6-29.
Winder speed match scale
•
Enable the diameter calculator by setting
parameter 37-43 Diameter Calculator Min Speed
to
0.
•
Disable tension loop output by setting
parameter 37-51 Tension PID Out Limit
to 0.
Center Winder Control
VLT
®
AutomationDrive FC 360
8
Danfoss A/S © 11/2014 All rights reserved.
MG06E102
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