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 3BHE021887R0101
Excitation system ABB module 3BHE021083R0101 XVC770BE101
Excitation system ABB module 3BHE021083R0101 XVC770BE101
Excitation system ABB module 3BHE020455R0103
Excitation system ABB module 3BHE020356R0101
Excitation system ABB module 3BHE019719R0101 GVC736BE101
Excitation system ABB module 3BHE017628R0102
Excitation system ABB module 3BHE014967R0002 UNS2880B-P,V2
Excitation system ABB module 3BHE014658R0102
Excitation system ABB module 3BHE014185R0002
Excitation system ABB module 3BHE014185R0001 UUD148AE01
Excitation system ABB module 3BHE014185R0001
Excitation system ABB module 3BHE014185R0001
Excitation system ABB module 3BHE014105R0001 5SHY3545L0020
Excitation system ABB module 3BHE014105R0001
Excitation system ABB module 3BHE014023R0101 UFC789AE101
Excitation system ABB module 3BHE013299R0002 LTC743CE02
Excitation system ABB module 3BHE013299R0002
Excitation system ABB module 3BHE010751R0101
Excitation system ABB module 3BHE009949R0004
Excitation system ABB module 3BHE009949R0004
Excitation system ABB module 3BHE009681R0101
Excitation system ABB module 3BHE009681R0101
Excitation system ABB module 3BHE009681R0101
Excitation system ABB module 3BHE009319R0001
Excitation system ABB module 3BHE009017R0102 XVC724BE102
Excitation system ABB module 3BHE009017R0102
Excitation system ABB module 3BHE006805R0002 DDC779BE02
Excitation system ABB module 3BHE006412R0101 UFC762AE101
Excitation system ABB module 3BHE006412R0101 CVMI2B
Excitation system ABB module 3BHE006412R0101
Excitation system ABB module 3BHE006373R0101 XVC769AE101
Excitation system ABB module 3BHE006373R0101 XVC769AE101
Excitation system ABB module 3BHE004573R0145
Excitation system ABB module 3BHE004573R0145
Excitation system ABB module 3BHE004573R0142 UFC760BE142
Excitation system ABB module 3BHE004573R0142
Excitation system ABB module 3BHE004573R0141
Excitation system ABB module 3BHE004573R0141
Excitation system ABB module 3BHE004385R0001 UNS0884A-V1
Excitation system ABB module 3BHE003604R0102 UFC765AE102
Excitation system ABB module 3BHE003604R0102 UFC765AE102
Excitation system ABB module 3bhe003604r0102
Excitation system ABB module 3BHB045668R0008
Excitation system ABB module 3BHB045668R0008
Excitation system ABB module 3BHB045647R0003
Excitation system ABB module 3BHB045647R0003
Excitation system ABB module 3BHB045647R0001
Excitation system ABB module 3BHB045647R0001
Excitation system ABB module 3BHB035822R0001
Excitation system ABB module 3BHB032608R0001
Excitation system ABB module 3BHB031013R0001
Excitation system ABB module 3BHB030479R0512
Excitation system ABB module 3BHB030310R0001
Excitation system ABB module 3BHB022755R0001
Excitation system ABB module 3BHB021400R0002 5SHY4045L0004
Excitation system ABB module 3BHB021400R0002
Excitation system ABB module 3BHB020538R0001
Excitation system ABB module 3BHB019719R0101
Excitation system ABB module 3BHB018162R0001 5SHY4045L0001
Excitation system ABB module 3BHB017688R0001 IPS21-35AD
Excitation system ABB module 3BHB017688R0001
Excitation system ABB module 3BHB017641R0001
Excitation system ABB module 3BHB016371R0002
Excitation system ABB module 3BHB016295R0001
Excitation system ABB module 3BHB015651P0001
Excitation system ABB module 3BHB013088R0001
Reviews
There are no reviews yet.