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.
https://www.xmamazon.com
https://www.xmamazon.com
https://www.plcdcs.com/
www.module-plc.com/
https://www.ymgk.com
330180-51-00 Bently Nevada 3300XL Proximitor Sensor
3500/05-01-03-00-00-00 BENTLY NEVADA System Rack
3500/20 125744-02 BENTLY NEVADA Rack Interface Module
126632-01 Bently Nevada 3500/42M Proximitor/Seismic Monitor
125704-01 Bently Nevada I/O Module 3500/34
Bently Nevada 133819-01 RTD/TC Non-Isolated I/O Module 3500/60
Bently Nevada125720-01Spare 4-Channel Relay Output Module
Bently Nevada 3500/34 125696-01 TMR Relay Module
125680-01 Proximitor I/O Module Bently Nevada 3500/40M
125388-01 Half-height Module Bently Nevada
136294-01 BENTLY 3500/62 I/O Module
3500/91-01-01(161204-01+161216-01)bently Communication Gateway Module
149992-01 BENTLY 3500/33 calories Relay Output Module
330850-50-00 BENTLY NEVADA preprocessor
16710-20 Bently Nevada interconnection cable
330103-00-13-10-02-00 Bently Nevada 3300 XL 8mm Proximity Probe
P3403893-0351 BENTLY Vibration Transmitter
IMQRS22 Bently Nevada Quick Response Module
330704-000-050-10- 02-05 Bently Nevada proximity detector
330103-00-03-10-02-05 Bently Nevada proximity detector
330104-00-13-10-02-05 Bently Nevada 3300 XL 8 mm Proximity Sensor
330780-90-05 Bently Nevada 3300 XL front sensor
330106-05-30-05-02-05 Bently Nevada 3300 XL 8mm Reverse Mount Probe
330500-00-02 Bently Nevada piezoelectric speed sensor
330130-085-02-05 Bently Nevada 3300 XL Extension Cable
330161-02-85-05-94-01-02 Bently Nevada Single triaxial high voltage feedthrough of 3300 system
133292-01 Bently Nevada Low Voltage DC Power Module
3500/15-07-00-00 Bently Nevada 3500/15 Power Module
176449-08 Bently Nevada Rod position monitor
128229-01 Bently Nevada Seismic I/O Module
3500/15-02-02-01 Bently Nevada power module
1900-65A-01-01-01-01-01 Bently Nevada Universal Device Monitor
1900/65A-01-01-03-00-00 Bently Nevada Universal Device Monitor
21504-00-28-10-02 Bently Nevada 5mm / 8mm series proximity sensor system
990-05-50-01-00 Bently Nevada Two-Wire Vibration Transmitte
24765-01-01 Bently Nevada Shell Expansion Sensor Assembly
3300/03-01-01 Bently Nevada 3300/03 System Monitor
3300/14-02-20-00 Bently Nevada Dual Thrust Position Monitor
3300/14-02-20-00 Bently Nevada DC power supply
3500/42M 176449-02 BENTLY 3500/42M 176449-02 Preprocessor/seismic monitor
9200-06-01-10-00 speed sensor bently
106M1079-01 BENTLY Redundant power modules
3500/93-03-01-00-00 Analog module BENTLY NEVADA
3500/93-02-02-02-00 Pulse input submodule BENTLY NEVADA
3500/93-01-00-00-00 DCS spare parts BENTLY NEVADA
3500/92-04-01-00 DCS system module BENTLY NEVADA
3500/92-01-01 Communication gateway module BENTLY NEVADA
3500/63-01-00 Monitoring module BENTLY NEVADA
3500/61(163179-02) Power connection board BENTLY NEVADA
3500/61(133819-02) Temperature monitor BENTLY NEVADA
3500/53-01-00 Overspeed protection module BENTLY NEVADA
3500/50-04-00 Adapter module BENTLY NEVADA
3500/50-01-01-00-00 Programmable control module BENTLY NEVADA
3500/50-01-00-01 Digital input module l position module BENTLY NEVADA
3500/50-01-00 Speed module BENTLY NEVADA
3500/45-01-00 Expansion/axial position module BENTLY NEVADA
3500/42-01-00 Vibration module BENTLY NEVADA
Reviews
There are no reviews yet.