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Appendix C Setup Parameters
590 DRV Digital DC Drive Product Manual
App. C - 22
C
STANDSTILL
STANDSTILL determines when the speed setpoint is zero and the motor has stopped.
Inputs and Outputs
The inputs are SPEED FEEDBACK from the speed loop and SPEED SETPOINT
from setpoints. The outputs are AT ZERO SPEED, AT STANDSTILL, and AT ZERO
SETPOINT. AT ZERO SPEED is connected to DIGITAL O/P 1, terminal B5, in the
default configuration. A "not at standstill" signal is sent to the drive enable logic.
Description
When SPEED FEEDBACK is less than ZERO THRESHOLD, the AT ZERO SPEED
output is ON. AT ZERO SETPOINT is ON when SPEED SETPOINT is less than
ZERO THRESHOLD. When both AT ZERO SPEED and AT ZERO SETPOINT are
ON, AT STANDSTILL is ON signaling the motor has stopped.
590SP DC DRIVE
MENU LEVEL
MENU LEVEL
DIAGNOSTICS
MENU LEVEL
SETUP PARAMETERS
SETUP PARAMETERS
RAMPS
SETUP PARAMETERS
SETPOINT SUM 1
SETUP PARAMETERS
STANDSTILL
M
M
When STANDSTILL LOGIC is ENABLED, the SCR firing circuits are disabled, the main contactor remains ener-
gized and the RUN LED stays on when the drive is at standstill. The drive remains in this state until standstill drops
out. That is, when the speed setpoint or speed feedback rise above the zero threshold.
STANDSTILL LOGIC is useful in maintaining absolute zero speed but can cause problems in web handling applica-
tions using tension feedback. At zero speed, the SCR's turn off allowing web tension to pull the driven roll in reverse.
Once the drive no longer senses it is at zero speed, the SCR's turn back on causing the motor to move forward and
regulate tension. An oscillation condition can result as the drive SCR's turn on and off trying to maintain a fixed
position.
Parameters
Tag Parameter
Description
Range
Default
11
STANDSTILL LOGIC When enabled, inhibits the controller when at zero
ENABLED/DISABLED
DISABLED
setpoint and zero speed.
12
ZERO THRESHOLD
Threshold for setting the zero setpoint and zero speed.
0.00 to 100.00%
2.00%
Controls the zero speed relay output.
Figure C.23 - Standstill
Содержание 590SP
Страница 2: ......
Страница 16: ...1 4 590SP Digital Product Manual 1 Chapter 1 Introduction ...
Страница 18: ...2 2 2 590SP Digital Product Manual Chapter 2 Identification ...
Страница 31: ...Figure 3 3 Wiring Circuit Diagram for 590SP Digital Drive ...
Страница 41: ...4 10 4 590SP Digital Product Manual Chapter 4 Start up and Adjustment DIGTIAL ...
Страница 66: ...6 590SP Digital Product Manual Chapter 6 Service and Maintenance 6 5 Figure 6 4 Replacing the SCR Packs ...
Страница 67: ...6 590SP Digital Product Manual Chapter 6 Service and Maintenance 6 6 ...
Страница 88: ...B Appendix B Using the Man Machine Interface App B 3 590SP Digitial Product Manual Figure B 1 Basic Menu Tree ...
Страница 89: ...B Appendix B Using the Man Machine Interface App B 4 590SP Digitial Product Manual ...
Страница 96: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 7 C Figure C 8 Aux I O ...
Страница 102: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 13 C Figure C 16 Current Profile ...
Страница 104: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 15 C t t t Figure C 17 Stop Rates ...
Страница 110: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 21 C Figure C 22 Setpoint Sum ...
Страница 114: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 25 C Figure C 25 Speed Loop ...
Страница 118: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 29 C Figure C 27 Speed Loop Setpoints ...
Страница 120: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 31 C Figure C 28 Current Loop ...
Страница 122: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 33 C Figure C 29 Inhibit Alarms ...
Страница 124: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 35 C Figure C 30 Calibration t ...
Страница 125: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 36 C ...
Страница 145: ...Appendix D I O Configuration System Menu App D 20 D 590SP Digital DC Drive Product Manual Figure D 17 Block Diagram ...
Страница 149: ...Appendix D I O Configuration System Menu App D 24 D 590SP Digital DC Drive Product Manual ...
Страница 150: ...t t t t Figure D 20 590SP Digital Software Block Diagram ...
Страница 160: ...590SP Digital Product Manual App E 10 E Appendix E MMI Parameter List ...
Страница 168: ...Appendix G RS232 System Port P3 590SP Digital Product Manual App G 6 G ...
Страница 173: ...590SP Digital Product Manual App H 5 Appendix H RS422 Communications Ports P1 P2 H Figure H 3 PNO Config Block Diagram ...
Страница 194: ...Appendix H RS422 Communications Ports P1 P2 590SP Digital Product Manual App H 26 H ...
Страница 218: ...App L 4 590SP Digital Product Manual L Appendix L 590SP DRV Option Figure L 3 590SP Digital DRV Layout Diagram ...
Страница 219: ...590SP Digital Product Manual App L 5 L Appendix L 590SP DRV Option Figure L 4 590SP Digital DRV Schematic Diagram ...
Страница 220: ...App L 6 590SP Digital Product Manual L Appendix L 590SP DRV Option ...
Страница 221: ...Figure L 5 Wiring Circuit Diagram for 590SP Digital DRV Drive ...
Страница 224: ...590SP Digital Product Manual App M 3 Appendix M Special Blocks and Application Notes M Figure M 1 Diameter Calculator ...
Страница 228: ...590SP Digital Product Manual App M 7 Appendix M Special Blocks and Application Notes M Figure M 5 Setpoint Sum 2 ...
Страница 259: ...590SP Digital Product Manual App M 38 Appendix M Special Blocks and Application Notes M ...