Nexen RSTC1100 964528 - Manual (Page 23)

23 FORM NO. L-21204-C-0705
MID-PROCESS APPLICATION
Nexen’s RSTC is capable of mid-process tension control
by adjusting the torque output of a motor or brake. Mid-
process applications are similar to an unwind process when
controlling from the upstream end of a tension zone, and
a rewind process when controlling from the downstream
end of a tension zone (Refer to Figure 13).
The most notable difference is that mid-process applications
deal with constant diameters and inertias. Similar to an
unwind or wind application, the output level of the RSTC’s
controlled outputs will increase when more tension is
desired and decrease when less tension is desired.
SPRING DISENGAGED CLUTCH
It is common to use a spring-disengaged clutch on a
winder and this spring can affect performance if the
RSTC’s output becomes too low and the clutch begins to
disengage. Use the MINIMUM OUTPUT setting to keep
the control output high enough to overcome the spring
force in a spring-disengaged clutch.
DIAGNOSTICS
Select DIAGNOSTICS icon
from the toolbar; then press
START to begin receiving data
from the RSTC.
The Diagnostics window
displays real-time operating
information from the RSTC.
This can be used throughout
the setup procedure to verify
results from sensors and
setup parameter settings. All
functions of the Diagnostics
window are explained in
the HELP fi les of the RSTC
Communications software.
Figure 29 Diagnostics Screen