5-4
DANCER APPLICATIONS
www.maxcessintl.com
MAGPOWR DFC-90
MI 850A265 1 G
Optional adjustments
Integrator
Many machines run quite successfully after the above adjustments
have been made. If the dancer arm moves too much while the roll
changes size, the integrator can be turned on to keep the dancer
centered.
The control adjustments marked with a box apply to a dancer with
integrator.
1.
Set the I pot full clockwise.
2.
With the machine stopped, set the switch to PID. This turns
the integrator on.
3.
Run the machine near full roll and at a slow speed and use the
POS2 pot to center the dancer. Rotate POS2 clockwise to
move the dancer up towards an empty dancer condition.
4.
Turn the I pot counter-clockwise until the dancer begins to
oscillate around the setpoint position. Then, turn the I pot
clockwise until the oscillation stops.
The RUN/STOP input must be used if the integrator is on (switch
in PID position). The RUN/STOP input should be closed (terminals
17 and 18) when the machine starts its deceleration. The DFC-90
keeps the integrator on until Stop Time expires. Increase Stop
Time by rotating the STOP TIME pot clockwise. The STOPPED
indicator lights when the Stop Time expires. While the STOPPED
indicator is illuminated, the DFC-90 provides a hold level current
to the clutch/brake. This hold level may be adjusted by turning
the HOLD pot.
Stop Multiplier and Stop Time
Even if integrator mode is not used, the STOP MULT pot can be
used to increase the torque while the machine is stopping. The
increased torque is applied when the RUN/STOP input is closed
(terminals 17 and 18). The length of time the increased torque is
applied is adjusted by the STOP TIME pot.
Using the stop multiplier feature in dancer mode could cause the
dancer to oscillate while the machine is stopping.
