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| Valve Terminal Control System |
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| The digital and integrated driller house control system adopts Siemens newest S7-200 PLC module and can be used to control all operations for the drilling rig by a way of sending “ON” and “OFF” instructions to each of the solenoids which are connected with driller house terminal, drawworks terminal and compound box terminal via multi-core cable or bus after collection of the driller operation instructions and system feedback datum. The system integrates the electronic Crown-O-Matic that can monitor hook height and hook speed, collision-proof alarming and braking. The system adopts DC in-wire uninterrupted power supply which can keep the system working for more than 4 hours continuously, even when there is no external power supply. On the other hand, in order to keep the system stable and reliable, the system adopts double PLC redundancy control device, i.e. the control switch can be automatically converted to PLC2 for control of the drilling rig’s operation when PLC1 fails. The input module of the system is equipped with manual buttons and a touch screen, and the output module is equipped with a two PLCs control system that ensures the whole system’s reliability and safety, thus reducing maintenance time and costs and increasing working efficiency. Considering Ex proof and shockproof standards, the system’s control device is integrated into the EX cabinet of the driller house. All input and output signal cables are connected with the EX cabinet by fast plugs, then connected to the PLC via terminals. The system voltage is DC24V which is safe and not harmful to workers. The whole system is reliable, stable, has good anti-jamming capability, a reasonable layout, easy operation and is convenient in terms of maintenance.
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Email: sales@littlesilver.in
