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.
IC200MDD844 GE Hybrid input and output modules
Vibro-meter VM600 200-582-915-032 PLC function module
IC660ELB921H GE Single slot PCIM card
FBM208 FOXBORO Digital input module
IC670GBI102D GE Genius interface bus unit module
IC693CHS397 GE 5-slot expansion board
IC693CHS398 GE 5-slot expansion board
IC693CPU350 GE 90-30 Series Processor Module
FBM240 FOXBORO Driver motherboard
FBM212 FOXBORO CPU processor
IC693CPU363-CH GE Single slot CPU module with embedded Ethernet interface
P0973LN FOXBORO Frequency converter motherboard
IC693MDR390 GE 4 Amp Isolated Relay Output Module
IC693MDR390 GE Combined Discrete I/O Modules
FBM219 FOXBORO input module
P0904AK FOXBORO Counting template
IC695CHS012 GE RX3i series 12 slot universal backplane
IC695CPE330 GE RX3i CPE330 controller
FBM215 FOXBORO Signal processing board
P0924JH FOXBORO Power supply panel
IS200TSVOH1B GE Terminal board
IC697PWR724 GE Power module
IC697PCM711P GE Single slot programmable coprocessor (PCU)
IC697MDL750H GE Discrete output module
PCI-8517 NI FlexRay interface device
RER133 ABB Bus connection module
P0916DC FOXBORO analog input module
SR469-P5-HI-A20-T GE SR469 multi line relay
FBM223 FOXBORO PLC module
THED136100WL GE Thermal magnetic circuit breaker
FBM233 FOXBORO DCS card piece
UR1HH GE Power module GE multi wire UR series universal relay
FBM223 Foxboro Communication board
FBM222 FOXBORO Input output module
FBM216B P0927AJ Foxboro driver module
FPS400-24 FOXBORO output module
VMIVME-7698-345-350-017698-345-B GE Single board computer
FBM216B FOXBORO Control system module
8602-FT-ST GE I/O module
P0916AA FOXBORO Commissioning cable
P0926KP FOXBORO cable
DKS11.1-040-7-FW Rexroth SERVO DRIVE
TVB-1202-1/ANET 1381-647980-12 Circuit board module
870ITEC-AYFNZ-7 FOXBORO CPU module
TVB6002-1IMC-1308-644857-12-1381-644857-16 Circuit board module
TVB6002-1/IMC 1308-644857-12 Circuit board module
FBM224 P0926GG FOXBORO Control panel
VME-U10/B 381-641697-5 Circuit board module
P0916PH P0916JS FOXBORO Inverter circuit board
873EC-JIPFGZ FOXBORO Controller master unit
FEM100 P0973CA FOXBORO Controller module
FBM227 P0927AC FOXBORO Simulation module
Reviews
There are no reviews yet.