MATelec HydroWHIZ FPC-63421-A Mild Steel 0.75 kW Variable Speed Four Pump Controller

Stormwater, sewage and water transfer with four pumps are managed by the HydroWHIZ FPC-63421-A, providing variable-speed regulation with level, pressure and temperature operating modes. The system utilises single-phase 230 Vac input to generate three-phase 230 Vac output, with a 0.75 kW VSD rating matching motor speed to system demand.

Coordinating pump control, the controller provides automatic duty alternation and bumpless transfer to rotate active pumps. Bumpless transfer ensures smooth transitions between pumps. Additional pumps are brought into operation as demand increases to maintain the selected setpoint, then removed from service when they are no longer required. Sleep Assist Speed Minimise and Sleep Assist Boost extend sleep periods and reduce pump cycling.

Proportional speed control responds to level or temperature signals, with PID control handling pressure applications. Housed in an IP44 mild steel cabinet with integral cooling fan and removable gland plate, the panel includes a colour touchscreen HMI, pump circuit breakers and a padlockable isolator. The touchscreen provides system and individual pump status, operating modes, logged events and diagnostic functions.

A volt-free common fault relay provides BMS signalling, and Modbus RTU RS485 supports SCADA integration. Protection features include high and low limits, no-flow and feedback-signal faults. VSD and system protection functions monitor operating conditions and provide configurable responses to faults such as overload, pressure, level, temperature, no-flow and feedback-signal conditions.

Features

• Jacking pump control brings Pump 1 out of sleep first, with the main pumps starting when it can no longer keep up with demand
• Circuit breaker protected low-voltage control and input circuitry
• 4-20mA analogue input for hydrostatic level or pressure sensors
• Volt-free common fault relay terminal provides remote signalling of active controller alarms
• Pump anti-seize protection runs pumps periodically during low use to help prevent seizing
• Padlockable main isolating switch allows the incoming power supply to be physically isolated during servicing and maintenance
• Sleep Assist Boost temporarily increases pressure before sleep, allowing a longer sleep period and reducing pump cycling