SOLO Air – Air-Cooled Induction Heating Systems
Induction Heating Innovation by UltraFlex
The UltraFlex SOLO Air Systems are an innovation in induction heating technology, featuring a unique Direct Digital Step™ control algorithm.
Compact, air-cooled power supplies with output power from 24 kW to 32 kW.
The latest SiC MOSFET transistor technology and patented digital control algorithms ensure optimal performance and maximum efficiency in a wide frequency range (from 5kHz to 25kHz), depending on Heat Station and Capacitor bank.
Ultra-flexible, wide range of load impedance matching by utilizing multiple transformer ratios and configurable capacitor banks.
Durable and reliable design with built-in tuning, safety, and diagnostics features.
FEATURES
- Precise power control from 0 to 100% of rated power
- Output regulation: Power or Current
- Parameter Monitoring: Current, DC Volts, Output Volts, Output Power, Frequency
- Industrial control panel – 5” LCD touch, full color
- Advanced and intuitive user interface
- Multiple heating programs and profiles for automatic process control
- 0-10V or 4-20mA external control and remote Start/Stop operation
- USB connectivity for firmware upgrades
- Control modes: Automatic, Remote or Local control
- Automatic frequency scanning and load tuning
- Fast dynamic response and ramp-up time for short heating cycles
- Remote Heat station with a variable ratio transformer and a configurable capacitor bank for matching to a wide range of loads and coils
- Built-in temperature control and monitoring features
- Data logging of process and operating parameters
- RS485 (MODBUS) serial interface for remote control and monitoring
SOLO Air Models
| System model | SOLO 24 | SOLO 32 |
| Power Supply Part Number | 0UPT-540-100-24 | 0UPT-540-100-32 |
| Output kW | 24kW | 32kW |
| AC Line Volts (50/60Hz) | 380 / 480VAC ±10% | 480VAC ±10% |
| Line Phases | 3 | 3 |
| Weight Lb (kg) | 44 lb. (20 kg) | 44 lb. (20 kg) |
| Dimensions Inch (mm) WxDxH | 15.7″ x 12,4″ x 16.1″ (400 x 314 x 409) | 15.7″ x 12,4″ x 16.1″ (400 x 314 x 409) |
Heat Station Models
| Compatible Heat Stations | HS-32A |
| HS Part Number | 1ACC-540-400-02 |
| Frequency kHz | 10-25kHz |
| Weight Lb (kg) | 35 (16) |
| Dimensions Inch (mm) WxDxH | 9.1 x 16.7 x 8.1” (232 x 425 x 208) |
| Cooling requirements | Air Cooled |
Induction Heating Benefits
- Improved energy efficiency compared to resistance or flame heating
- Uniform heating with a high degree of controllability and repeatability
- Increased productivity by rapid time-to-temperature heating
- Eliminates open flame safety hazards and propane handling costs
- Low maintenance requirements, easy-to-use systems
Common questions about the SOLO Air Systems — air-cooled induction heating power supplies available in 24 kW and 32 kW configurations.
Does the SOLO Air require water cooling?
No. Both the SOLO Air power supply and the HS-32A heat station are completely air-cooled, eliminating the need for a water chiller, plumbing, or water quality maintenance. This makes the SOLO Air ideal for environments where water cooling infrastructure is unavailable or impractical.
What is the difference between SOLO and SOLO Air?
Both share the same power supply platform with Direct Digital Step control and SiC MOSFET technology. The key difference is cooling: SOLO uses water-cooled heat stations and covers 3–400 kHz, while SOLO Air uses an air-cooled heat station (HS-32A) and operates at 5–25 kHz. Choose SOLO Air when water cooling is not available; choose SOLO for higher frequencies or surface heating applications.
What is the frequency range of the SOLO Air?
The SOLO Air operates from 5 kHz to 25 kHz, depending on the capacitor bank configuration. This lower frequency range is suited for deep-penetration heating applications such as forging, preheating, and through-hardening. The system automatically scans and tunes to the optimal frequency for your coil and workpiece.
What are the electrical requirements?
The SOLO Air requires 3-phase power. The SOLO 24 operates on 380/480 VAC ±10% (50/60Hz), while the SOLO 32 requires 480 VAC ±10%. Check the Specifications tab for exact ratings. Both models share the same compact form factor at 44 lbs (20 kg).
What external control and integration options are available?
Standard on all SOLO Air models: 0–10V and 4–20mA external power control, remote Start/Stop, RS-485 with MODBUS protocol for PLC/SCADA integration, USB port for firmware updates, data logging, and built-in temperature monitoring. The 5″ color LCD touchscreen provides full local control with multiple programmable heating profiles.
What applications is the SOLO Air best suited for?
The SOLO Air’s 5–25 kHz frequency range and air-cooled design make it ideal for preheating, forging, annealing, stress relieving, and shrink fitting of medium to large parts. It is particularly well suited for field work, maintenance operations, and facilities without water cooling infrastructure.
How much does the SOLO Air system weigh?
The power supply weighs 44 lbs (20 kg) and the HS-32A air-cooled heat station weighs 35 lbs (16 kg). The compact, portable design allows easy relocation between workstations or job sites without heavy lifting equipment.
PICTURES
Ready to Get Started with the SOLO Air?
Download the full datasheet for detailed specifications, or let our application engineers help you find the ideal configuration for your heating process.
