GE DS200SDCCG3A Gas turbine interface assembly

Owing to the arrangement in closed and insulated electric containers it is necessary to get the loss heat out that is produced by the frequency converters. Split-type air conditioners have been installed for that purpose with a particular view to having closed cooling circuits. This has led to an almost total elimination of dust from the interior of the frequency converter room being deposited on the powerelectronic components.

In addition, the frequency converter systems are equipped with a touch screen for fast menu-supported display of major operational signals, such as speed, torque, fault and status reports.

Control concept

 Compact programmable controllers – so-called application controllers (APC) are integral parts of the frequency converter system. These controllers are used for timecritical control and supervision functions close to the drives, such as • conveyor speed control • speed control of individual drives • speed and belt-slip control • load equilibration between two driving drums • speed difference control between two motors on one driving drum Thus the application controllers are the interface between the frequency converters and the decentralised control system based on ABB Advant OSC® that performs overriding operation control functions and general control and supervision tasks.

Optimum belt load 

An optimum loading of the belts is achieved by way of controlling the belt speed, depending on the load volume, in the range of 3.0 … 6.0 m/s. A laser scanner is used to supply reference values by monitoring the cross-section of the load on the belt. The value determined is the input for a complex mathematical model called “virtual conveyor” integrated in the control system. It is there that the reference values are calculated for all downstream conveyors and transmitted via Ethernet (optical-fibre connections) to local controllers and from there to the frequency converters.

 Company product range

----------------------Ruichang Mingsheng Automation Equipment Co., Ltd----------------------

PLC module, programmable controller, CPU module, IO module, DO module, AI module, DI module

Network communication module,

Ethernet module, motion control module, analog input module, analog output module, digital input module, digital output

Module, redundancy module, power module, relay output module, relay input module, processor module