Nexen RSD100 964520 - Manual (Page 17)

1 FORM NO. L-21107-H-0108
.0 TeNSION COMPeNSaTION (RSD100P only)
If the machine’s tension setpoint varies more than
+/- 20%, RSD100 performance can be improved with
Tension Compensation. Improved performance will allow
for faster machine accelerations & decelerations. Tension
Compensation can be skipped if: the machine’s tension
setpoint does not vary by more than ±20%, higher
performance is not necessary, or Tension Compensation
is not chosen.
NOTe: Tension Compensation works with a minimum
Dancer air Pressure of 1. psi (10. kPa). If Dancer
air Pressure is not connected or is below the
minimum allowed, the Tension Compensation will be
disregarded. The Dancer air Pressure and Total Web
Tension displays in the Diagnostics Window will be 0
(Refer to Figure 1).
Setting up tension compensation involves calibrating
the RSD100P to convert dancer air pressure into total
tension. Consequently, total web tension must be
physically measured (or calculated) at low and high
tension once during the setup process. After tension
compensation is setup, the RSD100P will also display
machine tension on the Diagnostics screen.
l
Ow
t
enSiOn
Machine with integrated Tension Measurement:
Setup the web machine with the minimum tension and
run the machine at 20% of maximum speed and adjust
the output of the RSD100P manually until the dancer
is stable. Read the web tension and dancer loading
pressure. Enter these values in the Low Tension fields of
the Web Tension Configuration window.
Machine without integrated Tension Measurement:
Set the dancer pressure to the minimum. With a spring
Figure 11
.0 UNITS
For the units of measurement, select English (psi and lb-force) or Metric (kPa and N-force). Refer to Figure 12.
or electronic scale, measure the dancer force. Use the
following formula to calculate total tension.
Total Tension = Force Measurement / (2 x Number of
dancer rollers)
h
igh
t
enSiOn
Repeat the Low Tension procedure except use maximum
tension. Press the SEND button to store the Web
Tension Setup values in the RSD100P.