CONTROL STATION (CS)

The purpose of our control stations is to provide pump unit control, processing of instrument signals and the pump unit emergency tripping.

The control system can be based on PLC by Bradley, Siemens, Mitsubishi, Beckhoff or any other manufacturer requested by the client. PLC enables feeding the HPP operation parameters into the memory, and sending all process parameters of the pump unit to the client’s upper level of automation via RS-485 or Ethernet interface. The control station can be provided with a frequency converter by Danfoss, Mitsubishi, ABB, Schnider Electric, of other VFD requested by the client

Pump unit control algorithms include the PID control system (automatic maintenance of the preset flow rate and discharge pressure values by adjusting the electric motor speed and the shut-off valve). It allows to maintain the pump units operation within the maximum efficiency range (and hence the minimum energy consumption) due to the fact that the system itself selects the required motor speed of the pump unit to ensure the preset flow rate and discharge pressure values. The automation facilities will ensure the preset pressure and flow rate values at the pump unit outlet even with changing injection conditions such as well intake capacity.

THE CONTROL STATION ENSURES EMERGENCY TRIPPING IF PROCESS PARAMETERS DEVIATE FROM RATED VALUES

низкое/высокое давление на приеме ГНУ;
Low/high pressure at HPP suction
Low/high pressure at HPP discharge
Increased HPP vibration
Increased temperature in the thrust chamber
Increased temperature in the pumping section
Load current and phase voltage control
Increased temperature of the motor stator
Increased temperature of the motor bearings
Frequency converter and motor protection system

Features

Frequency converter enables a safe and soft start and stop of the pump unit, protects the motor against high current loads, excludes the possibility of sudden impact mechanical loads on the pump shaft and thrust chamber and smooths out shortcomings of the mains power supply for process units. The frequency converter also enables the following protective modes:

Electronic motor thermal overload protection system
Radiator temperature monitoring makes it possible to trip the frequency converter once the temperature reaches 100 °C
The frequency converter is protected from short circuit on motor terminals U, V, W
Protection in the event of the supply voltage phase loss
Protection from ground short-circuit on motor terminals U, V, W, etc.