590 DRV Digital DC Drive Product Manual
App. M - 4
Appendix M Special Blocks and Application Notes
M
TAPER CALC.
TAPER CALC. uses two inputs, tension setpoint and taper setpoint, to create the ten-
sion demand. The operator usually controls these setpoints.
NOTE. This block is ignored by the drive unless SYSTEM:: CONFIGURE I/
O:: BLOCK DIAGRAM:: TAPER is connected to a non-zero tag.
Taper is a common requirement for winders. It reduces the tension as the roll diameter
increases. A profiler adjusts the tension using the equation:
(100% - TAPER × (1 - MIN DIAMETER ÷ DIAMETER))
to yield a hyperbolic taper output. MIN DIAMETER and DIAMETER are linked in-
ternally to DIAMETER CALC. The profile is displayed in Figure M.2.
The result is multiplied by TENSION SPT to get TAPER DEMAND. When the taper
setpoint is at 100 percent the motor produces constant torque, that is a constant current
from core to full roll, and the tension falls off as the roll builds.
TENSION TRIM allows the tension demand to be adjusted for example when using
closed loop trim. The result is TOT. TENS. DEMAND.
DIGITAL DC DRIVE
MENU LEVEL
MENU LEVEL
DIAGNOSTICS
MENU LEVEL
SETUP PARAMETERS
SETUP PARAMETERS
SPECIAL BLOCKS
SPECIAL BLOCKS
RAMPS
DIAMETER CALC.
TAPER CALC.
SETUP PARAMETERS
AUX I/O
SETUP PARAMETERS
SETUP PARAMETERS
SETUP PARAMETERS
JOG/SLACK
RAISE/LOWER
SPECIAL BLOCKS
M
M
M
Tag Parameter
Description
Range
Default
438 Taper
Taper setpoint input for determining the amount of
±100.00%
0.00%
taper in the tension demand.
439 Tension Spt.
Tension setpoint input.
0.00 - 100.00%
0.00%
452 Taper Demand
Tension demand before adding Tension Trim.
0.00 - 100.00%
440 Tension Trim
Tension Trim input.
±100.00%
0.00%
441 Tot. Tens. Demand
Output of the Taper Calc. function block.
±100.00%
Figure M.2 - Taper Profile
Figure M.3 - Tension Demand
Summary of Contents for 590 DRV Digital
Page 2: ......
Page 16: ...1 4 Chapter 1 Introduction 1 590 DRV Digital DC Drive Product Manual ...
Page 22: ...2 6 2 Chapter 2 Identification 590 DRV Digital DC Drive Product Manual ...
Page 45: ...Figure 3 20 Wiring Circuit Diagram for 590 DRV Digital Drive ...
Page 77: ...5 22 5 590 DRV Digital DC Drive Product Manual Chapter 5 Troubleshooting ...
Page 103: ...App A 18 A Appendix A Technical Description 590 DRV Digital DC Drive Product Manual ...
Page 107: ...B Appendix B Using the Man Machine Interface App B 4 590 DRV Digital DC Drive Product Manual ...
Page 149: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 42 C ...
Page 173: ...Appendix D I O Configuration System Menu App D 24 D 590 DRV Digital DC Drive Product Manual ...
Page 174: ...Figure D 20 590 DRV Digital DC Drive Software Block Diagram t t t t ...
Page 202: ...App F 18 Appendix F Spare Parts List 590 DRV Digital DC Drive Product Manual F ...
Page 208: ...Appendix G RS232 System Port P3 590 DRV Digital DC Drive Product Manual App G 6 G ...
Page 250: ...Appendix J Parameter List by Menu App J 8 J 590 DRV Digital DC Drive Product Manual ...
Page 258: ...Appendix K Parameter List by Parameter Name 590 DRV Digtial DC Drive Product Manual App K 8 K ...