DETAILED DESCRIPTION

RVFF.34…

The VariFlex3 RVFF is a simple, compact and general purpose AC variable speed drive for use with 3-phase AC induction motors. Parameters are logically divided in to fifteen different groups for simple and immediate setting of the devices according to the needs of the process. Via an extension cable, the standard display can be placed outside the cabinet where the drive is installed.
The RVFF is a complete family of inverters ranging from 4kW/5HP up to 160kW/215HP with three phase AC input 480VAC.
The VariFlex3 employs state of the art microprocessor digital technology which controls
all drive functions. All printed circuit boards are coated and manufactured using surface mount technology, ensuring the high quality and reliability of the units.

General specification

• Input voltage range: 3-ph 380 - 480VAC
• Power range: 4 - 160 kW
• Current range: 9.6 - 325 A
• Control mode: Sensorless, vector control, V/F, SLV, PMSLV with space vector PWM
• Conforms to IEC 60068-2-6
• Output frequency: 0-400Hz
• Speed accuracy: ± 1%
• Input phase loss detection: yes (Enable / Disable)
• Auto sequencer: 16 programmable pre-sets for frequency & run duration with Individual Accel / Decel for auto sequencer pre-set speeds
• Pump cascade control: 1 to 3 (Built-in)
• Outputs: 3 multi-function and 2 analogue
• Inputs: 6 multi-function and 2 analogue
• braking capacity without resistor: 20%
• EMI filter: yes (up to 55kW)
• Processor: 32 bit
• Torque: 150% at 3 Hz
• Under torque detection: yes (ex: Broken belt)
• PID functionality: 2 selectable PID controllers
• Real time clock (RTC): yes
• PLC function: Built-in (with ladder programming. Timers, counters, comparators & speed functions)
• Communication interface modules: Profibus / DeviceNet / Ethernet / CANOpen / BACnet
• (additional modules). Modbus is integrated.