Description
hardware flow control. It is an ideal choice in the field of industrial automation.
In the formula, a is the design acceleration/deceleration value: s is the current actual position value of the
elevator: V2 is the maximum speed of the elevator at this position.
Considering that the lifting system needs to enter the parking track at a low crawling speed when entering the
end of the stroke to avoid equipment damage caused by large mechanical impact, therefore, when there are still
1~5m away from the parking position, the lifting speed is limited to 0.5m/ below s.
Since the instantaneous speed before parking is very low, the position accuracy of the system”s parking can
be relatively improved, which is particularly important when the auxiliary shaft is lifted.
2.2 Design and implementation of security protection functions
Mines have particularly strict requirements on safety and reliability of hoist control systems [5]. While ensuring high
reliability of electrical control equipment, the control system also sets up multiple protections in key links where failures
may occur, and detects the actions and feedback signals of these protection devices in real time.
First of all, monitoring the operating status of the elevator is the top priority in the safety protection
function of the elevator control system. In the control system, the operating speed and position of the
motor are monitored at all times, and the current position and speed values are compared with the system”s
designed speed and position curve. Once it is found that the
actual operating speed of the hoist exceeds the designed speed value, immediately Issue an emergency
stop command and strictly ensure that the lifting speed is within the safe monitoring range during the entire
lifting process. At the same time, position detection switches are
arranged at several locations in the wellbore, and these position detection switches correspond to specific
position values and corresponding speed values. When the elevator passes these switches, if it is found through
encoder detection that the actual speed value and position deviate from the values corresponding to the position
detection switch, the control system will also judge that it is in a fault state
and immediately implement an emergency stop.
In order to determine whether the encoder connected to the main shaft of the elevator drum is normal,
two other encoders are installed on the elevator. In this way, the position and speed detection values
of the three encoders are always compared. Once it is found that the deviation between the detection
value of one encoder and the detection value of the other two encoders exceeds the allowable range,
the control system will immediately consider it to have entered a fault state and implement an emergency stop. Protective action.
3 Conclusion
The efficient and safe operation of main well equipment is an important guarantee for its function.
In the application of mine hoist, the 800xA system designed speed curve, self-correction, various
self-diagnosis and protection functions according to the specific process characteristics of the main
shaft mine hoist, which has achieved good results in practical applications.
Excitation system ABB module SDCS-POW-4-SD
Excitation system ABB module SDCS-POW-4
Excitation system ABB module SDCS-POW-1C
Excitation system ABB module SDCS-POW-1
Excitation system ABB module SDCS-PIN-4B
Excitation system ABB module SDCS-PIN-48-SD
Excitation system ABB module SDCS-PIN-48-SD
Excitation system ABB module SDCS-PIN-48-COAT
Excitation system ABB module SDCS-PIN-4
Excitation system ABB module SDCS-PIN-205B
Excitation system ABB module SDCS-PIN-205B
Excitation system ABB module SDCS-IOE-2C
Excitation system ABB module SDCS-IOE-1
Excitation system ABB module SDCS-FEX-4A
Excitation system ABB module SDCS-FEX-4
Excitation system ABB module SDCS-FEX-2A
Excitation system ABB module SDCS-CON-4
Excitation system ABB module SDCS-CON-4
Excitation system ABB module SDCS-CON-2B
Excitation system ABB module SDCS-CON-2A
Excitation system ABB module SDCS-CON-2A
Excitation system ABB module SDCS-CON-2
Excitation system ABB module SDCS-CON-1
Excitation system ABB module SDCS-COM-81
Excitation system ABB module SDCS-COM-8
Excitation system ABB module SDCS-AMC-DC2
Excitation system ABB module SD853
Excitation system ABB module SD853
Excitation system ABB module SD834 3BSC610067R1
Excitation system ABB module SD834
Excitation system ABB module SD834
Excitation system ABB module SD833 3BSC610066R1
Excitation system ABB module SD833
Excitation system ABB module SD833
Excitation system ABB module SD832
Excitation system ABB module SD832
Excitation system ABB module SD831
Excitation system ABB module SD831
Excitation system ABB module SD831
Excitation system ABB module SD823
Excitation system ABB module SD822Z
Excitation system ABB module SD822
Excitation system ABB module SD821
Excitation system ABB module SD821
Excitation system ABB module SD812V1
Excitation system ABB module SD812F-Z
Excitation system ABB module SD812F 3BDH000014R1
Excitation system ABB module SD812F
Excitation system ABB module SD812F
Excitation system ABB module SD812F
Excitation system ABB module SD802F
Excitation system ABB module SD802F
Excitation system ABB module SD2048DL
Excitation system ABB module SD1024D-2-S
Excitation system ABB module SCYC55830 58063282A
Excitation system ABB module SCYC55830
Excitation system ABB module SCYC55830
Excitation system ABB module SCYC51090 58053899E
Excitation system ABB module SCYC51040 58052680E
Excitation system ABB module SCYC51020 58052582H
Excitation system ABB module SCYC51020 58052582G
Excitation system ABB module SCYC51020
Excitation system ABB module SCYC51010 58052515G
Excitation system ABB module SCYC51010
Excitation system ABB module SCC-CEL3020
Excitation system ABB module SCC-C
Excitation system ABB module SCB-01 3HNA011334-001
Excitation system ABB module SC610 3BSE001552R1
Excitation system ABB module SC610 3BSE001552R1
Excitation system ABB module SC610
Excitation system ABB module SC540 3BSE006096R1
Excitation system ABB module SC520M 3BSE016237R1
Excitation system ABB module SC520 3BSE003816R1
Excitation system ABB module SC513
Excitation system ABB module SC513
Excitation system ABB module SC510 3BSE003832R1
Excitation system ABB module SC510
Excitation system ABB module SB822 3BSE018172R1
Reviews
There are no reviews yet.