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WEM Electric Motors & Drives (Pty) Ltd

Low Voltage AC Variable Speed Drives

INVT Low Voltage AC Variable Speed Drives GD Range

  INVT GD20 High Performance AC VFD- Variable Speed Drive

  • Single Phase range : 0.4kW - 2.2kW, 220V
  • Three Phase range: 0.75kW - 2.2kW, 400V
  • Variable speed motor control
  • Mini design feature
  • 1x Analogue Input ; 1x Analogue Output
  • 5 Digital inputs , 1 Y terminal output & 1 x Relay output
  • V/F Control
  • Standard MODBUS Communication
  • Built in braking unit
  • DC Braking, flux braking & resistor dynamic braking
  • 16 steps Multi step speed control               

Typical Applications

  • Packaging Machinery
  • Food Machinery
  • Textile Machinery
  • Centrifuge
  • Engraving Machines
  • Cutting Machines
  • Pumps
  • Fans
  • Conveyor
  • Home Industry
  • Variable speed motor control
  • Energy saving

 

INVT GD100 Single Phase AC Variable Speed Drive - 4kW

Features

  • Power range : 4kW
  • Model: GD100
  • Variable speed control
  • Input voltage range : 220V
  • 2x Analogue Input
  • 4DI, 1HDI Digital Input
  • 2x Analogue Output
  • 2x Relay Output
  • Standard MODBUS Communication
  • Built-in Braking Unit
  • Built-in C3 Filter                                                          

Typical Applications

  • Machine Tools
  • Textile
  • Ceramic
  • Plastic
  • Home Industries
  • Pumps
  • Fans
  • Winch
  • Mixers
  • Chemical
  • Energy saving
  

INVT GD200 General Purpose AC Variable Speed Drive

Features

  • Power Range: 1.5kW - 500kW
  • Input Voltage Range: 400V ±15%
  • Variable speed control
  • V/f Vectorized control technology - DSP control
  • Accurate motor auto-tuning providing excellent motor drive performance
  • Standard Built-in C3 filter - Enhanced EMC performance
  • Supports common DC bus and DC input supply
  • Manufactured in accordance with IEC standards; TUV & CE Approval
  • Resistor; DC and Magnetic flux braking
  • Bookcase panel mounting with independent air-cooling design - supports wall, flange mount and floor mounting

Typical Applications

  • Pumps & Irrigation
  • Granulators
  • Cooling Towers
  • Fans
  • Crushers
  • Mixers
  • Plastics
  • Simple water supply
  • HVAC & Compressors
  • Replace DOL & Star Delta
  • Energy Saving

 

INVT GD300 High Performance AC Variable Speed Drive

Features

  • Power Range: 1.5kW - 500kW
  • Input Voltage Range: 400V ±15%
  • NOW AVAILBLE in 525V ±15% - FROM 1.5kW - 500kW
  • Open loop vector control & V/f
  • Variable speed motor drive control
  • Built in braking unit up to 30kW
  • Accurate motor auto-tuning proving excellent motor drive performance
  • Advanced open-loop vector control: 0.25Hz/150% starting torque & 1:200 speed ratio
  • Can run various motors: Asynchronous, Permanent Magnet Synchronous, Variable Frequency & Direct Drive Motors
  • Communication: MODBUS, PROFIBUS CAN & Ethernet with powerful PC software
  • Manufactured in accordance with IEC standards: TUV & CE approval

Typical Applications

  • Pumps & Irrigation
  • Fans
  • Hoisting / Crane
  • Crushers
  • Mills
  • Conveyors
  • Machine Tools
  • CNC
  • Mixers
  • DC Motor replacement
  • Slip-ring motor replacement
  • Servo drive
  • Chemical
  • Plastic extruder, granulator
  • Variable speed motor control
  • Energy Saving
 

INVT GD35 Close Loop Vector Control AC Variable Speed Drive

Features

  • Power Range: 1.5kW - 75kW
  • Input Voltage Range: 400V ±15%
  • High performance
  • Variable speed motor control
  • Built in braking unit up to 30kW 
  • Closed-loop vector control - 0Hz = 200% Starting torque
  • High accuracy position control
  • Powerful motor torque, speed and position control
  • Compatible with multiple motors - Spindle ; Servo ; Variable freq motor ; Synchronous & standard Asyncronous motors.
  • PG Card built in - Encoder card.
  • PC Software compatible

Typical Applications

  • CNC Machine - Lathe
  • Machine Tools - High speed spindle
  • Servo motors
  • Hoist - Elevator - Crane
  • Wire extrusion & winding 
  • Metal & Woodworking Machinery
  • Printing
  • Paper & Pulp
  • Pumps & fans
  • Fabrics Machines
  • Variable speed motor control
  • Energy saving
 

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