HydroWHIZ Variable Speed Pump (VSD) Rains/Mains Controller

Function Features

• Multi-pump Control - Control of up to 6 pumps in any number of duty, duty assist, and standby pump configurations.
• Pump Limiting - For limiting max flow or power requirements.
• Duty Sharing and Alternation - Adjustable duty change period and bumpless transfer.
• Pump Staging and Destaging - Additional pumps are staged into operation to maintain setpoint and destaged when no longer required.
• Staggered Pump Start and Stop - Prevents excessive current draw and reduces water surge or hammer.
• Manual Control - Manual modes for system and pumps with 10-minute timeout to revert back to auto mode.
• System Types - Level, pressure, or temperature control modes.
• Control Directions - For emptying or filling a tank, boosting or dropping pressure, and heating or cooling temperature.
• Speed Control of Pumps - Proportional speed control for level and temperature control, PID control for pressure with adjustable proportional and integral values to change VSD responsiveness.
• Level Control Mode - Controlled by 4-20mA hydrostatic level transducer and optional backup high and low-level float switches, submerged in a tank or pit.
• Tank Top-up Valve Control - Tops up the tank with mains water when the normal inflow of rain or treated water into the tank does not keep up with demand (Specific to level control).
• Maintain Minimum Level - Ensures minimum tank level is maintained (Specific to level mode, empty direction).
• Pressure Control Mode - Controlled by 4-20mA pressure transducer and optional high and low-pressure switches.

Enclosure

• IP44 rated, powder-coated mild steel enclosure with removable gland plate, integral ventilation, and thermostatically controlled fan.

Protection

• Pad-lockable mains power isolator switch.
• Circuit breaker protected low voltage control and input circuitry.
• Individual pump circuit breaker protection.

Control & Interface

• HydroWHIZ colour touch screen HMI (see Interface features).
• HydroWHIZ PCB control module.
• Variable Speed Drive per pump.

Inputs

• Single phase (230Vac) or three phase (400Vac) power supply.
• Analogue 4-20mA input for level, pressure, or temperature transducer.
• Up to 8x digital 24Vdc inputs for backup low and high float switches, pressure switches or thermostats, system enable/disable input, and a low flow switch.

Outputs

• 1-6 pump outputs (230Vac three phase for both 1 & 3 phase versions).
• BMS volt-free output for common fault.
• Output for solenoid valve available upon request.
• Modbus RTU Serial RS485 connections for SCADA.

Interface Features

• Main screen with system status, auto/off/manual modes.
• Pump screens with status, logged data, and auto/off/manual control.
• Alarm screens with mute/reset, date & time-stamped historical faults.
• Logged data with system event & fault counts, pump starts, run hours.
• Analogue feedback value trend graph.
• Streamlined, user-friendly system setup process.
• System diagnostics for easy fault finding, factory reset.