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.
Display operation panel 3HAC036812-001
Display operation panel 3HAC036770-001
Display operation panel 3HAC036626-006
Display operation panel 3HAC036626-005
Display operation panel 3HAC036350-001
Display operation panel 3HAC036288-001
Display operation panel 3HAC036252-001
Display operation panel 3HAC036230-001
Display operation panel 3HAC036207-001
Display operation panel 3HAC036198-001
Display operation panel 3HAC036134-001
Display operation panel 3HAC035819-001
Display operation panel 3HAC035632-001
Display operation panel 3HAC035631-001
Display operation panel 3HAC035480-002
Display operation panel 3HAC035444-002
Display operation panel 3HAC035436-002
Display operation panel 3HAC035434-002
Display operation panel 3HAC035406-003
Display operation panel 3HAC035406-002
Display operation panel 3HAC035398-003
Display operation panel 3HAC035398-002
Display operation panel 3HAC035381-001
Display operation panel 3HAC035301-001
Display operation panel 3HAC035278-001
Display operation panel 3HAC035046-002
Display operation panel 3HAC035017-003
Display operation panel 3HAC035016-002
Display operation panel 3HAC035006-002
Display operation panel 3HAC034962-003
Display operation panel 3HAC034936-001
Display operation panel 3HAC034895-004
Display operation panel 3HAC034895-003
Display operation panel 3HAC034895-002
Display operation panel 3HAC034895-001
Display operation panel 3HAC034865-003
Display operation panel 3HAC034864-002
Display operation panel 3HAC034832-003
Display operation panel 3HAC034782-003
Display operation panel 3HAC034766-001
Display operation panel 3HAC034753-001
Display operation panel 3HAC034720-001
Display operation panel 3HAC034678-006
Display operation panel 3HAC034648-001
Display operation panel 3HAC034553-004
Display operation panel 3HAC034535-003
Display operation panel 3HAC034475-003
Display operation panel 3HAC034335-001
Display operation panel 3HAC034334-001
Display operation panel 3HAC034295-001
Display operation panel 3HAC034234-001
Display operation panel 3HAC034221-001
Display operation panel 3HAC034204-002
Display operation panel 3HAC034141-001
Display operation panel 3HAC034140-001
Display operation panel 3HAC034139-001
Display operation panel 3HAC034138-001
Display operation panel 3HAC034056-005
Display operation panel 3HAC034056-001
Display operation panel 3HAC033868-001
Display operation panel 3HAC033789-001
Display operation panel 3HAC033784-001
Display operation panel 3HAC033733-006
Display operation panel 3HAC033733-004
Display operation panel 3HAC033733-003
Display operation panel 3HAC033733-002
Display operation panel 3HAC033603-001
Display operation panel 3HAC033548-016
Display operation panel 3HAC033548-015
Display operation panel 3HAC033548-013
Display operation panel 3HAC033548-009
Reviews
There are no reviews yet.