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We are fast where others are slow, flexible where others are rigid, and committed where others are distant.
We are fast where others are slow, flexible where others are rigid, and committed where others are distant.
The Simple and Reliable Solution for Pumps, Fans, and HVAC on Single-Phase Supply.
Power range
0.75 to 4.0 kW
Rated input voltage
Single phase 220 V
Output frequency range
0…600 Hz
Enclosure rating
IP20

Discover the engineering advantages that set the AT24 UB-SP apart - and keep your operations running at peak performance.

The drive uses Triol algorithms for operation with asynchronous motors. Control is achieved through high-quality motor control methods, including vector control (both open loop and closed loop) based on an accurate mathematical model, which ensures precise control and maximal protection for the motor and mechanism.
The VFD's software contains several embedded functions, such as a PID controller, timer functions, torque limit for protecting machinery, and customizable VFD autorestart.
The drive can operate effectively across an operating temperature range of -10 °C to +40 °C (14 °F to 104 °F) without derating, and up to +50 °C (122 °F) with derating.
The AT24 UB-SP is designed for effortless installation, setup, and operation.
The AT24 UB-SP includes specific algorithms designed to increase system survivability. These protective measures involve derating at high load and reduction of the Pulse Width Modulation (PWM) frequency when the inverter experiences high temperatures.

The VFD allows for functionality expansion by providing two slots for installing optional extension units. These units enable connectivity to various ACS networks (ModbusTCP, Profinet, Profibus, CANopen), different types of encoders (incremental, absolute, sin/cos), and I/O expansion.

The AT24 UB-SP is a low voltage variable frequency drive intended as a simple and reliable solution for pumps, fans, air conditioning systems, hoists and elevators, handling power from 0.75 to 4.0 kW at a single-phase rated input voltage of 220 V.
Look inside the AT24 UB-SP to see how smart design becomes real-world performance, efficiency, and uptime.

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Built through partnership. Proven by engineering. Trusted in the toughest conditions. Full-cycle production. Total reliability. Systems that perform where others fall short.
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Triol’s partners
We collaborate with leading Oil & Gas and industrial companies worldwide to deliver efficient, proven solutions tailored to their unique challenges.
Sustainability
Because real sustainability starts at the design table - not at the marketing one - we engineer systems that conserve, protect, and outperform over time.
Technology
Where others deliver equipment, Triol delivers systems. Modular, intelligent, and field-ready. Built for the complexity of modern industry.
Implementations
Global reach, industrial depth: Triol systems implemented across continents and critical sectors.
Speed range
1:1000 (in a closed loop)
Speed control accuracy
Better than 0.1% of nominal speed (in closed loop systems)
Operating temperature range (without derating)
-10 °C … +40 °C (14 °F … 104 °F)
Control methods available
Open loop vector control, Closed loop vector control, Scalar voltage/frequency (V/f) control (5 points)
Standard digital inputs
5 (NPN/PNP)
Braking chopper
Built-in, standard configuration