Reliance Electric 1SU42015
The 1SU42015 is a 15HP (11kW) three-phase AC variable frequency drive (VFD) from the Baldor-Reliance (now ABB) SP500 series. It is engineered for heavy-duty industrial washdown applications and has been discontinued by the original equipment manufacturer. New surplus, refurbished, and used units remain available for maintenance and system retrofitting purposes.
Description
Product Description
The 1SU42015 is a 15HP (11kW) three-phase AC variable frequency drive (VFD) from the Baldor-Reliance (now ABB) SP500 series. It is engineered for heavy-duty industrial washdown applications and has been discontinued by the original equipment manufacturer. New surplus, refurbished, and used units remain available for maintenance and system retrofitting purposes.
Model Number Interpretation
1SU: Denotes the SP500 series drive, three-phase, 460V class, UL-listed and IEC-certified.
4: Indicates a voltage rating of 380–460VAC.
2: Specifies a NEMA 12-only enclosure.
015: Represents a 15 horsepower rating.
Technical Specifications
Rated Power: 15HP / 11kW.
Input Voltage: 380–460VAC, three-phase, 50/60Hz.
Input Current: 25.4A.
Output Current: 21.0A.
Enclosure: NEMA 12 (IP52), washdown-rated.
Frame Size: D.
Dimensions (H×D×W): 465.2×198.9×286.5mm (18.31×7.83×11.28in).
Weight: 15.3kg (33.7lb).
Ambient Temperature: 0–40°C.
Control Mode: V/Hz (Volts-per-Hertz).
Certifications: UL Listed, IEC Certified.
Interface and Communication Configuration
The drive is equipped with standard power terminals for three-phase input (R, S, T) and output (U, V, W). It includes a front-mounted keypad and display for local programming and monitoring. Control terminals accommodate digital inputs, analog inputs, and relay outputs for external control and status signaling. No built-in communication ports are provided; communication options require additional modules if needed.
Core Functions
It features a heavy-duty NEMA 12 enclosure that protects against dust, moisture, and splashing water, making it suitable for washdown environments. The drive utilizes V/Hz control for reliable and straightforward motor speed regulation. A built-in cooling fan ensures effective heat dissipation during continuous operation. It incorporates comprehensive protection functions including overvoltage, undervoltage, overcurrent, overload, and overtemperature protection to safeguard both the drive and the connected motor.
Application Scenarios
It is suitable for use in conveyors and material handling systems, pumps, fans, and blowers, industrial mixers and machine tools, and food and beverage processing plants with washdown requirements. It is also commonly used as a replacement part for legacy systems originally equipped with Reliance SP500 drives.
Usage and Maintenance Instructions
Install the drive on a solid, flat surface in a clean, dry, and well-ventilated area. Ensure all power and control wiring connections are tight and comply with local electrical codes before applying power. Regularly inspect the drive’s operating temperature, current, and vibration during operation. Keep the cooling fan and ventilation openings clear of debris to maintain proper heat dissipation. Periodically check wiring terminals for tightness and signs of overheating or corrosion. Avoid operating the drive beyond its specified ambient temperature range. Disconnect all power sources before performing any inspection or maintenance work. Store spare drives in a cool, dry, and dust-free environment.
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