PMSM Water Pump Inverter for Permanent Magnet and Induction Motors

AUSENIST intelligent water pump inverters are designed to support both Permanent Magnet Synchronous Motors (PMSM) and conventional asynchronous induction motors (IM).

This two-in-one motor compatibility allows pump manufacturers and distributors to use one inverter platform across different pump product lines instead of preparing separate controllers for different motor technologies.

Why PMSM Support Matters for Pump Manufacturers

Many traditional water pumps use induction motors, while newer high-efficiency pump products increasingly use permanent magnet synchronous motors.

For a pump manufacturer producing both types, using separate inverter platforms increases product complexity.

AUSENIST 620 and 820 intelligent pump inverter platforms support both motor types.

This makes them suitable for manufacturers developing:

• Booster pumps
• Centrifugal pumps
• Intelligent water pumps
• Constant-pressure pump systems
• Commercial water supply equipment
• OEM pump products

One Inverter Platform for Two Motor Types

The 620 and 820 series are described in AUSENIST product materials as supporting both asynchronous motors and PMSM motors, providing a “two-in-one” application.

For OEM customers, this can simplify product planning because one control platform can be adapted to different pump motor configurations.

Constant-Pressure Control

Motor compatibility is only one part of an intelligent pump inverter.

The 620 platform also uses PID control to automatically adjust pump speed according to actual water demand.

When water demand decreases, motor speed can decrease.

When there is no water demand, intelligent sleep operation can stop unnecessary pump operation.

This makes the inverter suitable for constant-pressure water systems using either PMSM or induction motors.

Multi-Pump Operation

Compatible AUSENIST pump inverter systems also support multi-pump control.

The 620 platform can use a dual-master architecture with up to four auxiliary pumps.

The system supports:

• Backup master takeover
• Failed-pump bypass
• Timed pump rotation

This allows PMSM or induction motor pump systems to be integrated into more intelligent multi-pump installations.

IP54 Pump-Mounted Design

The 620 and 820 pump inverter platforms use IP54 protection and can be installed directly on compatible motor junction boxes using a backpack-style design.

For pump manufacturers, direct mounting can help reduce external cabinet requirements and create a more integrated pump product.

Intelligent Pump Protection

The inverter platform includes water-pump-specific protection functions such as:

• Water-shortage protection
• Pipe-burst shutdown
• High/low pressure alarms
• Phase-loss protection
• Anti-freeze operation
• Anti-rust operation

These functions make the inverter more suitable for complete pump-system control than a basic motor drive.

620 or 820 for PMSM Pumps?

The 620 series covers 0.75kW to 7.5kW.

The 820 series covers 0.75kW to 22kW.

Both platforms support PMSM and induction motors.

The choice depends mainly on required power and communication configuration.

Frequently Asked Questions

Can one AUSENIST inverter control PMSM and induction motors?

Yes. Compatible 620 and 820 pump inverter platforms support both motor types.

Can PMSM pumps use constant-pressure control?

Yes. Compatible pump inverter platforms support PID-based constant-pressure operation.

Can PMSM pumps be used in multi-pump systems?

Yes. Compatible configurations support intelligent multi-pump control.

Can the inverter be installed directly on the pump?

Yes. IP54 backpack-style models can be mounted directly on compatible motor junction boxes.

Request a PMSM Pump Inverter Solution

Send AUSENIST your motor type, power, voltage and pump application.

We can recommend a suitable intelligent pump inverter for PMSM or induction motor applications.

Website: www.ausenist.com