Optidrive E2 - Phase 1
The Optidrive E2 Single Phase is the world’s first fully digital, fully packaged variable speed drive for controlling low power single phase motors.
Variable speed drive for low power single phase motors
The Optidrive E2 Single Phase is the world’s first fully digital, fully packaged variable speed drive for controlling low power single phase motors. Designed to be cost effective and easy to use, the Optidrive E2 Single Phase is for use with PSC (Permanent Split Capacitor) or Shaded-Pole Single-Phase induction motors. Optidrive E2 Single Phase uses a revolutionary motor control strategy to achieve reliable intelligent starting of single phase motors. Optidrive E2 Single Phase has only 14 standard parameters to adjust in its basic form. The Optidrive's legendary ease of use ensures quick and easy drive commissioning. For the more advanced user the extended parameter set gives access to powerful additional functionality.
Typical Applications
Direct-drive fans and blowers with PSC (permanent-split capacitor) and shaded pole motors on single-phase power. These are typically applications with a starting torque of between 50-100% of motor full load rated torque.
Non-compatible Motors
E2 Single Phase Output drives are not compatible with switched-cap (cap-start or cap-start/cap-run), or "split-phase" AC induction motors. This is because Switched-cap motors cause current tripping when the motor switches the cap. The capacitor switching also interferes with the ability of the drive to control the motor speed. Split-phase motors draw excessive current at zero and low speeds, causing current tripping in the drives. E2 Single Phase Output drives are also not intended for brushless DC or switched-reluctance motors.
Avoiding Wrong Choices
The use of a single phase PSC or shaded pole motor for high starting torque applications should be avoided as this causes current tripping of the drive. This rule applies in general whether using a motor drive or not. The motor drive should not be viewed as a means of compensating for the inherent limitations of low-torque motors. Examples of motor drive applications to avoid with single phase shaded pole or PSC motors include belt/pulley loads, compressors and pumps with high head pressures and heavily loaded conveyors. Expect to over-rate a single phase drive to meet high starting currents if a single phase drive must be used for a high-torque application.
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