7.0 DANCER CONTROL
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MAGPOWR Spyder-Plus
MI 850A320 1 M
Page 22 of 60
7.2.1.3
OUTPUT LEVEL
This screen shows the actual output level of the Spyder in numeric form. The bar graph also shows actual output
level in analog form. The lower left character displays the status of the Spyder. See Section 7.2.1.1 for description
of the status character.
7.2.1.4
TENSION
This screen shows the actual measured tension in numeric and bar graph form if
the load cells are enabled in the Configure menu. The bar graph shows
measured tension and is scaled to the maximum tension set during calibration of
the load cells. The lower left character displays the status of the Spyder. See Section 6.3 to calibrate the load
cells.
7.2.2
CONFIGURE MENU
Navigate to the
Configure
menu. Press
. This section describes all
the screens in the Configure menu. This menu contains screens which
configure various options.
7.2.2.1
CONTROL TYPE
Select the control type
either “Dancer, Torque” or “Dancer, Speed”. Dancer, Torque is for dancers using using a
torque device (clutch or brake), and Dancer, Speed is for dancers using a speed device (motor). If a motor is used
for a dancer system, speed mode is recommended. If a motor is used on an unwind system for dancers, it must be
regenerative so that energy is removed from the system.
7.2.2.2
TUNING TYPE
When controlling a dancer in either torque or speed mode, an integrator can optionally be used in the control. The
integrator will keep the dancer in the same position as the roll builds or as dancer loading is adjusted. Many
systems do not need the integrator since the gain of the system is very high. Systems with integrators are
sometimes more difficult to stabilize. Integrator control is selected by choosing PID in torque mode or PI in speed
mode.
7.2.2.3
SYSTEM TYPE
Select the appropriate system type for the application either rewind or unwind. See Figure 12 and Section 7.3 for
proper connection of the dancer potentiometer voltage based on the System Type and Control Type.
7.2.2.4
USE LOAD CELLS
Enables reading of the load cells while in Dancer mode. See Section 6.3 to calibrate load cells.
7.2.2.5
OUTPUT RANGE
Select the main output range. For a main output range of either 0-10 VDC or 4-20 mADC select NORMAL. For the
–10 to +10 VDC range select “–10V to +10V”. The software is factory calibrated for the 0-10 VDC and the -10 to
+10 VDC output ranges. See Section 9.4 for recalibrating the output when using the 4-20 mADC range. See Figure
4 for jumper settings.
7.2.2.6
SETPOINT SOURCE
Select the source for the dancer setpoint. When set to ANALOG the Spyder will use voltage on the terminal 16 as
the dancer position setpoint. When set to ETHERNET the Spyder will use the software value of setpoint position.
This value may be changed either at the keypad, the web page or by Modbus/TCP.
Use the “Setpoint Position”
screen in the “Operator Loop” to change the software setpoint.
Setpoint Position is set by the voltage on Term.16. When Setpoint Source is Ethernet this screen may be used
to enter a desired setpoint by pressing the ENTER key or using the LEFT and RIGHT ARROW keys. Note: for P
or PD type control the dancer position will not be the same as the position
setpoint. If Proportional Gain is high enough the dancer position will be
approximately equal to the position setpoint. When Setpoint source is Ethernet
and control type is P or PD the setpoint may exceed 100%.
