OPTIONAL FUNCTIONS
8.3 Inertia / acceleration compensation (optional)
(NOT APPLICABLE FOR READOUT ONLY OPERATION)
This option is used for heavy rolls where the inertia negatively affects stopping and starting and
acceleration/deceleration. With this feature the CYGNUS can compensate for the inertia and maintain better control.
NOTE: This feature only works with linear ramping of velocity. While Inertia Comp can be used without Auxiliary
Inputs, best results will be achieved when using a Diameter Input.
Accel Comp requires a web velocity input, but may be used without a diameter input. For best results, use a DC
diameter input.
(Home Screen)
Requires Diameter and
Velocity Calibration.
Select when Accel Comp
option is used
Select when Inertia Comp option is used
during stopping. Requires Diameter NOTE: Accel Comp can
Calibration. be used for both
acceleration and
deceleration.
Enter calibration roll weight Enter Core Inertia
Enter calibration roll diameter Enter Core Diameter
Enter calibration roll width Enter time it will take to decelerate from max. velocity
Enter maximum velocity. Enter time it will take to accelerate to max. velocity
Go to calibrate. Diameter
Calibration must be done
before “inertia Comp” is used.
ACCEL/DECEL COMP
(Velocity sensor and calibration always required)
DC Voltage Diameter Sensor
DC Voltage Diameter Sensor
Calculated Diameter
(RPM and Velocity inputs required. Calibration of both required)
Calculated Diameter
(RPM input also required. RPM calibration required)
Enter the rate of acceleration/deceleration
required to activate the accel/decel feature
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