HydroWHIZ Variable Speed Pump (VSD) 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.
• 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.
• Pressure Control Mode - Controlled by 4-20mA pressure transducer and optional high and low-pressure switches.
• Jacking Pump Control - Pump 1 will always be the first to wake from sleep and main pumps will start if unable to keep up with demand.
• Mains Bypass Valve Control - Switches to mains water to bypass the supply tank when the pumping system is out of water or in fault condition.
• Sleep Assist Speed Minimise - When the system is at setpoint and pump speed is constant due to no demand for water, the system will slowly drop the pump speed, helping it to go to sleep sooner.
• Sleep Assist Boost - When the system is nearing setpoint and there is no demand for water, the system will boost the pressure before going to sleep so it can sleep for longer, reducing pump cycling.
• Pipe Fill - If the system wakes up and pressure is low, pipe fill runs a single pump to gently build pipe pressure and shuts the pump down if unable to build pressure within 10 minutes.

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 pressure 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.
• Alarms 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.