Product Brief
Electric Control System of Mine Hoist
Long engaged in the R&D, integrated design & supply, and installation & commissioning of hoist electric control systems, ENFI has accumulated its own expertise in shaft hoisting. Used with various electric drives including DC drives low-voltage or medium-voltage AC drives, ENFI's electric control systems can serve shaft hoisting systems of all kinds: single-rope winding type, multi-rope friction type, skip hoisting, cage hoisting and combination.
ENFI has developed a number of innovations in system integration, including: control over break failure, control over overload operation, control over incomplete shut of hoist vessel, optimized design of misoperation-proof control console, and safe break according to selected deceleration. These have won ENFI ministerial second awards for technological achievements.
ENFI has developed a number of innovations in system integration, including: control over break failure, control over overload operation, control over incomplete shut of hoist vessel, optimized design of misoperation-proof control console, and safe break according to selected deceleration. These have won ENFI ministerial second awards for technological achievements.
Specification & Series：Cage hoisting electric control system;
Skip hoisting electric control system;
Mixed shaft hoisting electric control system;
- Application Fields：Non-coal mining, environment without risk of explosion
SERVICE CALL+86 13521339794 
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Online Remarks
enfi.cemsa@gmail.com
Advantages & Features
- Safe.
The control system provides well-rounded protection, including redundant protection in multiple key parts; the drive has a stable performance and a low failure rate - Efficient.
Automated skip operation supported by fused signaling and control; shorted hoist cycle with less time for speed regulation and crawl; faster loading with underload/overload prevention; faster maintenance helped by automatic initial fault diagnosis - Energy-saving.
The system saves energy at hoist stop: no repeated alignment is needed at hoist start/stop; saves energy at magnetic fields: saves about 75% energy consumption induced by magnetic fields during hold; saves energy in ventilation: saves about 100% energy for ventilation during hold; saves energy during driving: saves energy by 10% by replacing low-speed DC motor with low-speed synchronous motor or asynchronous motor, and significantly reduce maintenance load. - Smart.
Full-fledged, highly automated control. Can effectively reduce workforce by providing remote, centralized monitoring for multiple hoists at once; convenient, remote maintenance supported, which reduces down time.
Working Principle
The site signals collected by main control PLC, monitoring PLC as well as other remote I/O and substations are gathered into the main control CPU through communication for logical judgment and calculation, forming various control orders to control the hoists. The driving device receives the command from the main control system and drives the main hoist motor to rotate according to the datum speed and diversion, realizing the lifting and putting down of the hoist.
Technical Parameters
| Technical parameter | |
|---|---|
| Control system | Siemens S7-1500, ET-200MP, ET-200SP. |
| Driving device | DC drive adopts ABB DCS800, DCS880; low-voltage AC drive adopts ABB ACS800, ACS880, and medium and high voltage AC drive adopts TMEIC Mve2, ABB ACS6000, etc. |
| Process detection equipment | SIEMENS, METTLER TOLEDO, UWT, ELCO, KUBLER, P+F, TURCK, BANNER, IFM, TIEFENBACH. |
The Application Achievements
Dongguashan Copper Mine, Tongling Non-Ferrous Metals Group
4400kW, 30t double-skip, 12m/s, 1200m hoist lift. It was the first shaft built in 2001 serving a Chinese non-ferrous metallic mine.
4400kW, 30t double-skip, 12m/s, 1200m hoist lift. It was the first shaft built in 2001 serving a Chinese non-ferrous metallic mine.
Chambishi Copper Mine, NFC Africa Mining PLC
Main shaft: single rope winding, double skips 3880kW
Auxiliary shaft: single rope winding cage-counterweight 2013kW
Schedule: 45 days were spent on the demolition, replacement, commissioning, and acceptance tests of two hoist systems, at a record speed of execution.
Main shaft: single rope winding, double skips 3880kW
Auxiliary shaft: single rope winding cage-counterweight 2013kW
Schedule: 45 days were spent on the demolition, replacement, commissioning, and acceptance tests of two hoist systems, at a record speed of execution.
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