Hydrovar® and Packaged Hydrovar®

The Hydrovar controller is a combination of a variable frequency drive and a programmable logic controller (PLC) in one compact package, which can be mounted on the fan cover of a TEFC pump motor. Drives are pre-programmed with patented pump specific software, designed for centrifugal pumps. They match pump output to a wide range of system conditions while protecting the pump, the motor and the pumping system. Hydrovar drives provide superior system pressure control over a wide range of flow rates. As demand changes the drive adjusts the speed of the motor to compensate, keeping output pressure nearly constant and Hydrovar drives reduce energy usage and cost. By slowing the speed of the pump, the Hydrovar eliminates the inefficiencies of full speed systems. With lower energy and maintenance costs, they can pay for themselves in less than 2 years!

Features & Benefits 

• Constant pressure with varying demand the Hydrovar varies the pump speed as flow rates change
• No external contactors, PLC’s, or motor protection required
• Lower system maintenance costs
• Less equipment to buy and maintain
• Fewer starts and stops eliminates water hammer
• No PRV valves or recirculation systems
• Space saving design: Drive mounted directly on vertical pump motor, with significantly smaller diaphragm tank.
• Software designed FOR pumps by pump engineers
• Control up to 8 pumps with full variable speed control
• Use combination of master and basic drives for most economical system solution
• Control up to 5 full speed pumps using 1 drive (with optional relay card and motor starters)
• MODBUS compatible
• Uses 4-20mA transducer similar to Aquavar product, 0-300 psi range. 
• Transducer (sensor) included with drive!
• Accepts 3 different signal inputs: 0-20mA; 4-20mA and 0-10VDC
• Master, Basic and Single drive options provide flexibility at lower cost
• Error log and diagnostic display shows temperature and real time current and voltage
• Simplified programming menu
• Multiple set points available
• 3 Separate start/stop inputs
• Use with Off-the-shelf TEFC 3Ø motors!
• No special equipment needed