Main Shaft Hoisting Signaling and Automatic Load/Unload Control System
Integrates Hoisting, Loading, and Unloading control system, eld bus communication with direct cable connection as backup, Hydraulic Station status is also monitored.
- Applied PLC as central control unit, and field bus network for communication.
- System power voltage AC127V, individual isolate transformer with UPS in secondary.
- 20% more backup I/O in Load/Unload control system.
- Hoisting control system communicate with Unload control system by fieldbus and direct cable connection, Watch Dog signals from both side are monitoring each other.
- Unloading System records hoist batch and hoisted coal volume,and has Report function with hardcopy.
- Load/Unload system control mode: Auto/Manual/Manual without Interlock/Test.
- Hoist signaling system: Auto/Manual/Backup Signal System/Test.
- Load/Unload: #1 Skip work/ #2Skip work/ Double Skip work
- Cord Check：at Main/at Tail
- Hoisting Mode: Coal/People/Maintenance
- Hoisting speed: Normal/Slow
- The system monitor and control hydraulic station of load/unload system as well.
- The system monitor coal level in Load Bin and Unload Bin as well.
- Setting method: Set Capacity, Set Weight, Set Time. The regular
- operation is Set Weight, while checked by Set Capacity. The Set Time works as backup.