Appendix C Setup Parameters
590 DRV Digital DC Drive Product Manual
App. C - 28
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.
DIGITAL 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 590 DRV Digital
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Страница 16: ...1 4 Chapter 1 Introduction 1 590 DRV Digital DC Drive Product Manual ...
Страница 22: ...2 6 2 Chapter 2 Identification 590 DRV Digital DC Drive Product Manual ...
Страница 45: ...Figure 3 20 Wiring Circuit Diagram for 590 DRV Digital Drive ...
Страница 77: ...5 22 5 590 DRV Digital DC Drive Product Manual Chapter 5 Troubleshooting ...
Страница 103: ...App A 18 A Appendix A Technical Description 590 DRV Digital DC Drive Product Manual ...
Страница 107: ...B Appendix B Using the Man Machine Interface App B 4 590 DRV Digital DC Drive Product Manual ...
Страница 114: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 7 C Figure C 8 Aux I O ...
Страница 120: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 13 C t Figure C 13 Field Control ...
Страница 122: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 15 C Figure C 14 Field Current Variables ...
Страница 124: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 17 C Figure C 15 Field Weakening Variables ...
Страница 126: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 19 C Figure C 16 Current Profile ...
Страница 128: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 21 C t t t Figure C 17 Stop Rates ...
Страница 134: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 27 C Figure C 22 Setpoint Sum ...
Страница 138: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 31 C Figure C 25 Speed Loop ...
Страница 142: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 35 C Figure C 27 Speed Loop Setpoints ...
Страница 144: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 37 C Figure C 28 Current Loop ...
Страница 146: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 39 C Figure C 29 Inhibit Alarms ...
Страница 148: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 41 C Figure C 30 Calibration t ...
Страница 149: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 42 C ...
Страница 169: ...Appendix D I O Configuration System Menu App D 20 D 590 DRV Digital DC Drive Product Manual Figure D 17 Block Diagram ...
Страница 173: ...Appendix D I O Configuration System Menu App D 24 D 590 DRV Digital DC Drive Product Manual ...
Страница 174: ...Figure D 20 590 DRV Digital DC Drive Software Block Diagram t t t t ...
Страница 202: ...App F 18 Appendix F Spare Parts List 590 DRV Digital DC Drive Product Manual F ...
Страница 208: ...Appendix G RS232 System Port P3 590 DRV Digital DC Drive Product Manual App G 6 G ...
Страница 234: ...Appendix H RS422 Communications Ports P1 P2 590 DRV Digital DC Drive Product Manual App H 26 H ...
Страница 250: ...Appendix J Parameter List by Menu App J 8 J 590 DRV Digital DC Drive Product Manual ...
Страница 258: ...Appendix K Parameter List by Parameter Name 590 DRV Digtial DC Drive Product Manual App K 8 K ...
Страница 318: ...590 DRV Digital DC Drive Product Manual App M 38 Appendix M Special Blocks and Application Notes M ...