RS485 Modbus Pump VFD

Ausenist water pump inverters support RS485 communication with Modbus RTU for integration into pump control and industrial automation systems.

This allows the inverter to communicate with external controllers and monitoring equipment.

Typical RS485 Applications

RS485 communication can be used with:

• PLC systems
• SCADA systems
• Building management systems
• Pump control panels
• Industrial automation
• Water treatment systems
• Multi-pump systems
• Remote monitoring systems

Modbus RTU

Modbus RTU is widely used in industrial equipment because it allows multiple devices to exchange operating information over RS485.

Depending on system requirements, inverter parameters can be used for monitoring and control.

For OEM projects, communication integration can be customized according to the customer's controller.

Analog Inputs

In addition to RS485, Ausenist VFDs support:

• 0–10V
• 4–20mA
• Pressure sensor feedback

These signals are commonly used in constant pressure water supply and industrial control systems.

Constant Pressure Control

A pressure sensor can send feedback to the inverter.

The VFD then adjusts pump motor speed according to the target pressure.

Typical operation:

Higher demand → higher speed

Lower demand → lower speed

Low demand → sleep

Pressure drop → automatic restart

Motor Control

Our inverter solutions support:

• AC induction motors
• Permanent magnet synchronous motors
• Vector Control
• V/F Control

Technical Range

• Power: 0.75–1000kW
• Voltage: 220–450V
• Frequency: 50/60Hz
• RS485
• Modbus RTU
• 0–10V
• 4–20mA
• IP20 / IP54 / IP65
• -40°C to +60°C

OEM Communication Customization

OEM customers can request customization of:

• Communication parameters
• Register mapping
• Control logic
• Display information
• Software
• Hardware interfaces
• PCB
• Enclosure

Applications

Our RS485 pump VFDs are suitable for:

• Booster pump systems
• Water treatment
• Irrigation
• HVAC
• Industrial water supply
• Pump stations
• Automation projects

Contact Ausenist

Send us your communication requirements, motor data and application information.

We can recommend a standard RS485 Modbus pump VFD or evaluate a customized solution.