MATelec HydroWHIZ FPC-63121-A Mild Steel 0.75 kW Variable Speed Single Pump Controller

Pressure boosting, water transfer and hot water circulation with a single pump are handled by the HydroWHIZ FPC-63121-A, which provides 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 demand.

Proportional speed control responds to level or temperature signals, with PID control handling pressure applications. Pressure-control functions include jacking pump support, Pipe Fill and Sleep Assist Speed Minimise. Pumps are started and stopped in sequence to reduce excessive current draw and minimise water surge or hammer during changes in demand.

Constructed in an IP44-rated powder-coated mild steel enclosure with integral ventilation, thermostatically controlled fan and removable gland plate, the panel includes a colour touchscreen HMI with logged event data and diagnostics, pump circuit breakers and a lockable isolator switch. Modbus RTU RS485 enables SCADA communication, and a volt-free common fault relay provides BMS signalling.

Protection functions cover 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. Manual operation is available for both the system and individual pumps, with a 10-minute timeout returning the controller to automatic operation.

Features

• Colour touchscreen HMI simplifies on-site commissioning and alarm tracking
• Pipe Fill gently builds pipe pressure during startup
• Eight digital 24Vdc inputs for backup float switches, pressure switches or thermostats
• Circuit breaker protected low-voltage control and input circuitry
• Dedicated pump circuit breakers ensure physical electrical isolation for each individual drive
• Sleep Assist Boost temporarily increases pressure before sleep, allowing a longer sleep period and reducing pump cycling
• Configurable low-pressure and no-flow protection