PXe-PI150 Variable Speed Motor Drive

Q: What is the PI150 variable speed motor drive used for?

The PI150 is used to control the speed of AC motors in applications such as fans, pumps, conveyors, compressors, packaging machinery and light industrial automation systems.

Q: What is the difference between a variable speed drive and a motor inverter?

In practical use, the terms are often used for similar equipment. A variable speed drive controls motor speed by adjusting the output frequency and voltage, while “motor inverter” or “frequency inverter” is commonly used to describe the power conversion stage that drives the motor.

Q: Can the PI150 be used for pump and fan control?

Yes. The PI150 is suitable for pump and fan applications where motor speed needs to be adjusted to match demand. This can help reduce mechanical stress and avoid running motors at full speed unnecessarily.

Q: Does the PI150 support vector control?

Yes. The PI150 supports V/F control and sensorless vector control, making it suitable for general motor control applications where stable speed and torque performance are required.

Q: Can the PI150 be integrated into an automated control system?

Yes. The drive includes RS485 communication and supports multiple command sources, including keypad, terminal control and serial communication. This allows it to be used in control panels and automated machinery systems.

Q: What protection functions are included?

The PI150 includes inverter protection functions such as overvoltage, undervoltage, overcurrent, overload, overheating and short circuit protection. These functions help protect both the drive and connected motor during abnormal operating conditions.

PX Electronics PI150 variable speed motor drives provide compact, reliable control for AC motors used in fans, pumps, conveyors, compressors and light industrial machinery. With V/F control, sensorless vector control, built-in PID, and RS485 communication, the PI150 Series is suited for control panels, automation systems, and variable-load applications that require stable motor speed regulation.

Technical Highlights for Motor Control Applications:

Compact variable speed drive
Designed for space-conscious control panels and machinery installations that require reliable motor speed control.

Vector and V/F control modes
Supports V/F control and sensorless vector control for a wide range of standard motor applications.

Suitable for fans, pumps and conveyors
Provides controlled acceleration, deceleration and speed regulation for common industrial and commercial loads.

Built-in PID control
Useful for pressure, flow and process control applications, including pump, fan and ventilation systems.

Multiple control inputs
Supports panel operation, terminal control and serial communication for integration into wider control systems.

RS485 communication as standard
Built-in RS485 allows the drive to be connected to automated systems that require remote control or monitoring.

Integrated protection functions
Includes protection against overvoltage, undervoltage, overcurrent, overload, overheating and short circuit conditions.

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Typical Applications:

HVAC fans
Pump systems
Conveyor systems
Packaging machinery
Compressors
Irrigation systems
General automation equipment
Light industrial machinery
Process control panels
Material handling systems

The PXe-PI150 Variable Speed Motor Drive is ideally suited for a wide range of industrial and commercial applications where precise motor control and energy efficiency are essential. Its compact footprint, intelligent control features, and low power consumption make it an excellent choice for:

HVAC Systems

For optimising fan and pump performance while reducing energy costs

Conveyor Systems

Ensuring smooth acceleration and deceleration for material handling.

Packaging Machinery

Providing accurate torque and speed control for consistent output.

Pumps and Compressors

Improving operational efficiency and reducing mechanical stress.

Automation Equipment

Enabling fine-tuned control in robotics, CNC machines, and assembly lines.

Agricultural And Irrigation Systems

Offering reliable motor control in demanding outdoor environments.

Applications

Technical Specification

Power
Rated Voltage	AC 3PH 380V (-15%) ~440V (+10%)
Input Frequency	50Hz/60Hz
Allowing Fluctuations	Voltage continued volatility: ±10%	Less than 3% of voltage unbalance rate 3%
Allowing Fluctuations	Input frequency fluctuation: ±5%	Distortion satisfy IEC61800-2 standard
Control
Control System	High performance vector control inverter based on DSP
Control Method	V/F control, vector control W/O PG
Automatic Torque Boost Function	Realise low frequency (1Hz) and large output torque control under the V/F control mode
Acceleration/Deceleration Control	Straight or S-curve mode. Four times available and time range is 0.0 to 6500.0s
V/F Curve Mode	Linear, square root/m-th power, custom V/F curve
Over Load Capability	G type:rated current 150% – 1 minute, rated current 180% – 2 seconds
Maximum Frequency	1、Vector control:0 to 300Hz; 2、V/F control:0 to 3200Hz
Carrier Frequency	0.5 to 16kHz; automatically adjust carrier frequency according to the load characteristics
Input Frequency Resolution	Digital setting: 0.01Hz Analog setting: maximum frequency*0.025%
Start Torque	G type: 0.5Hz/150% (vector control W/O PG)
Speed Range	1:100 (vector control W/O PG)
Steady-Speed Precision	Vector control W/O PG: ≤ ± 0.5% (rated synchronous speed)
Torque Response	≤ 40ms (vector control W/O PG)
Torque Boost	Automatic torque boost; manual torque boost (0.1% to 30.0%)
DC Braking	DC braking frequency: 0.0Hz to max. frequency braking time: 0.0 to 100.0 seconds braking current value: 0.0% to 100.0%
Jogging Control	Jog Frequency Range: 0.00Hz to max. frequency Jog Ac/deceleration time: 0.0s to 6500.0s
Built-in PID	Easy to realise closed-loop control system for process control
Automatic Voltage Regulation (AVR)	Automatically maintain a constant output voltage when the voltage of electricity grid changes
Torque Limit and Control	Automatically track current motor torque when the inverter starts
Personalisation Function
Self-inspection of Peripherals after Power-on	After powering on, peripheral equipment will perform safety testing, such as ground, short circuit etc.
Quick Current Limiting	The current limiting algorithm is used to reduce the inverter over current probability, and improve whole unit anti-interference capability
Timing Control	Timing control function: time setting range (0m to 6500m)
Running
Input Signal	DI Input Terminal	5 digital input terminals
Input Signal	AI1 Analog Input	1 analog input terminals respectively for optional range (0 to 20mA or 0 to 10V)
Input Signal	Multi-Speed	At most 16-speed can be set (run by using the multi-function terminals or program)
Input Signal	Emergency Stop	Interrupt controller output
Input Signal	Fault Reset	When the protection function is active, you can automatically or manually reset the fault condition
Input Signal	PID Feedback Signal	Including DC (0 to 10V), DC (0 to 20mA)
Output Signal	Output Signal	One way relay output; One way AD1 analog output
Output Signal	Relay Output	There are 40 signals each way. Contact capacity: normally open contact 5A/AC 250V, 1A/DC 30V
Output Signal	DA1 Analog Output	One way analog output, can select frequency, current, voltage etc 16 signals. Output signals can be sent 0～10V/0～20mA
Running Command Channel		Three channels: operation panel, control terminals and serial communication port. They can be switched through a variety of ways
Frequency Source		Total 7 frequency sources: digital, analog voltage, analog current, multi-speed and serial port. They can be switched through a variety of ways
Run Function		Limit frequency, jump frequency, frequency compensation, auto-tuning, PID control
Protection Function
Inverter Protection	Overvoltage protection, undervoltage protection, overcurrent protection, overload protection, overheat protection, overcurrent stall protection, overvoltage stall protection, lost-phase protection (optional), communication error, PID feedback signal abnormalities, PG failure and short circuit to ground protection
Display
LED Display Keyboard	Running Information	Monitoring objects including: running frequency, set frequency, bus voltage, output voltage, output current, output power, output torque, input terminal status, output terminal status, analog AI1 value, motor Actual running speed, PID set value percentage, PID feedback value percentage
LED Display Keyboard	Error Message	Up to three error messages are saved. The time, type, voltage, current, frequency and work status can be queried when a failure has occurred
Key Lock and Function Selection	The keypad can be partially or fully locked, define the function scope of some keys to prevent misuse
IGBT Temperature	Show the inverter inner IGBT temperature
Communication
RS485	Built in 485
Environment
Environment Temperature	-10℃ to 40℃ (temperature at 40℃to 50℃, please derating for use)
Storage Temperature	-20℃ to 65℃
Environment Humidity	Less than 90% R.H, no condensation
Vibration	Below 5.9m/s²(= 0.6g)
Application Sites	Indoor where no sunlight, corrosive substance, explosive gas, water vapour, dust, flammable gas, oil, mist, salt, etc
Altitude	No need to degrade use under 1000m, degrade 1% for altitude rise 100m when above 1000m, do not use it above 3000m
Protection Level	IP20
Product Standard
Product Adopts Safety Standards	IEC61800-5-1:2007
Product Adopts EMC Standards	IEC61800-3:2005
Cooling Method	Forced air cooling
Install Method	DIN-Rail mounting, wall mounting