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Sensorless, vector control for all motor types (IM, PM, BLDC, SynRM, LSPM).
Innovative technology, reliability, robustness and ease of use in a range of compact IP20 & IP66/NEMA 4X enclosures. Full portfolio of products available.

Optidrive E3 Family of Products Overview

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VFD technology for refrigeration systems

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Invertek Optidrive E3 Series


Supply Voltage
100 – 115V ± 10%, 200 – 240V ± 10%, 380 – 480V ± 10%
Supply Frequency
48 – 62Hz
Displacement Power Factor
> 0.98
Phase Imbalance
3% maximum allowed
Inrush Current
< rated current
Power Cycles
120 per hour maximum, evenly spaced
Overload Capacity
150% for 60 seconds, 175% for 2.5 seconds
Output Frequency
0 – 500Hz, 0.1Hz resolution
Typical Efficiency
> 98%
Control Method
Sensorless Vector Speed Control, PM Vector Control, BLDC Control, Synchronous Reluctance
Storage: -40 to 60°C, Operating: -20 to 50°C
95% Max, non condensing
Conforms to EN61800-5-1
Up to 1000m ASL without derating, up to 2000m maximum UL approved, up to 4000m maximum (non UL)
Built-in keypad as standard, optional remote mountable keypad
7 Segment LED
OptiTools Studio
Fault Memory
Last 4 trips stored with time stamp
Data Logging
Logging of data prior to trip for diagnostic purposes
Hours Run Meter
Power Supply
24 Volt DC, 100mA, short circuit protected, 10 Volt DC, 10mA for potentiometer
Programmable Inputs
4 total, 2 digital, 2 analog/digital selectable
Digital Inputs
8 – 30 Volt DC, internal or external supply; Response time < 4ms
Analog Inputs
Resolution: 12 bits; Response time: < 4ms;Accuracy: ± 2% full scale; Parameter adjustable scaling and offset
Programmable Outputs
2 total:1 analog/digital, 1 relay
Relay Outputs
Maximum voltage: 250 VAC, 30 VDC; switching current capacity : 6A AC, 5A DC
Analog Outputs
0 to 10 volt
PI Control
Internal PI controller, standby / sleep function
Fire Mode
Bidirectional selectable speed setpoint (Fixed / PI / Analog / Fieldbus)


  • Simple Comissioning: 14 parameter basic setup, default settings suitable for most applications, contactor style connection for simple wiring
  • Intuitive Keypad Control: Precise digital control at the touch of a button
  • Application Macros: Switch between Industrial, Pump & Fan modes to optimise Optidrive E3 for your application
  • Internal Category C1 EMC Filter: An internal filter in every Optidrive E3 saves cost and time for installation

Contact our pump experts to help guide your selection process and address proper sizing and materials.