PCU600 Pump Controller

Allan Aqua-Systems has developed a 'next generation' pump controller called the PCU600 pump controller. The pump controller is regarded as next generation by using a high speed RS485 link to communicate with the pump inverters rather than using the more traditional approach of digital inputs and a 0-10v speed reference.

Traditional PID is not used to control the pumps as it often fails to work effectively. The Allan Aqua PCU600 pump controller uses adaptive self-tuning algorithms to ensure smooth pump control.

PCU600 Pump Controller Features

• Fixed or variable speed pump control;
• Up to 6 pumps can be accommodated;
• Caters for single or multiple jockey pumps;
• Individual pump inverters on variable speed systems;
• Communication to the individual inverters via high speed RS485 link;
• Individual DOL contactors or electronic soft starters on fixed speed systems;
• Up to two pressure transducers can be used to monitor the system pressure;
• HMI display with 4 lines of 20 characters, 6 multi-function keys;
• LED's for Power on, common alarm and individual pump run and fault;
• Intelligent pump control algorithms with adaptive self-tuning to calculate required pumps speeds for smooth pump control with minimal hydraulic shock. Traditional PID control is not used;
• Intuitive, multi-menu system for easy setup;
• Non-volatile fault history with time/date and event logging;
• Pump information display for hours run, pump status and operating mode;
• Low system pressure monitoring alarm with selectable system response;
• High system pressure monitoring alarm with selectable system response;
• HMI operated "hand/off/auto" pump mode selection with manually adjustable speed control in hand mode on variable speed systems. Operating speed in hand mode is restricted to operate below the high pressure alarm limit;
• Automatic low pressure start-up mode whereby the pump set will operate in 'reduced start mode' until the system reaches the nominal system pressure, virtually eliminating pressure surge due to the 'cold starting' or restarting of the system after a fault condition. In fixed speed systems only one pump will be permitted to run and on variable speed systems only one pump will operate under reduced performance;
• Break tank low and high level monitoring by either float switches or conductive probes for single or dual break tank installations. Dual tank systems are provided with an override facility to eliminate one of the tanks from the monitoring process during maintenance procedures;
• Relay outputs to fixed speed pump starters;
• Single volt free change over relay output for common fault to the BMS;
• Engineering screen on the PCU pump controller to assist with fault diagnosis.