Reliance Electric 1SU54003
The 1SU54003 is a 3HP (2.2kW) three‑phase AC variable frequency drive (VFD) from the Baldor‑Reliance (now ABB) SP500 Easy Clean Plus series. Designed for harsh industrial and washdown environments, it features a rugged NEMA 4X (indoor only) / NEMA 12 enclosure. The unit is discontinued by the OEM, with surplus, refurbished, and used units available for maintenance and system retrofitting.
Description
Product Description
The 1SU54003 is a 3HP (2.2kW) three‑phase AC variable frequency drive (VFD) from the Baldor‑Reliance (now ABB) SP500 Easy Clean Plus series. Designed for harsh industrial and washdown environments, it features a rugged NEMA 4X (indoor only) / NEMA 12 enclosure. The unit is discontinued by the OEM, with surplus, refurbished, and used units available for maintenance and system retrofitting.
Model Number Interpretation
1SU: SP500 Easy Clean Plus series, three‑phase, 575V class, UL‑listed and IEC‑certified.
5: 575VAC input voltage range (517–632VAC nominal)。
4: NEMA 4X (indoor only) / NEMA 12 enclosure, washdown‑rated.
003: 3 horsepower rating.
Technical Specifications
Rated Power: 3HP / 2.2kW.
Input Voltage: 517–632VAC (575V nominal), three‑phase, 50/60Hz.
Input Current: 5.2A.
Output Current: 4.3A.
Enclosure: NEMA 4X (indoor only) / NEMA 12, IP56, size B.
Dimensions (H×D×W): 301.7×160.1×222.3mm (11.88×6.3×8.75in).
Weight: 5.4kg (12lb).
Ambient Temperature: 0–40°C.
Control Mode: V/Hz (Volts‑per‑Hertz), linear or custom curve.
Carrier Frequency: 4kHz, 6kHz, 8kHz (software selectable).
Short Circuit Rating: 30,000A.
Certifications: UL Listed, IEC Certified.
Interface and Communication Configuration
Equipped with standard power terminals for three‑phase input (R, S, T) and output (U, V, W). A front‑mounted keypad and LED display enable local programming and monitoring. Control terminals include 3 digital inputs (start/stop, forward/reverse, fault reset), 1 SPDT relay output (fault/status), 1 analog input (4–20mA / 0–10Vdc), and 1 analog output (0–10Vdc) for external control and signaling. No onboard communication ports; fieldbus connectivity requires optional modules.
Core Functions
Features all‑digital PWM control for precise motor speed regulation and high efficiency. The NEMA 4X/NEMA 12 enclosure protects against dust, moisture, splashing water, and hose‑directed washdowns for harsh indoor use. Adjustable acceleration/deceleration rates reduce mechanical stress. Comprehensive protection includes overvoltage, undervoltage, overcurrent, overload, and overtemperature safeguards for drive and motor. The Easy Clean Plus design allows for quick, hygienic wipe‑downs in food and beverage processing。
Application Scenarios
Suitable for food and beverage processing, pharmaceutical manufacturing, and chemical processing with washdown requirements; also for conveyors, pumps, fans, blowers, and general machinery in harsh industrial environments. Ideal for retrofitting legacy SP500 systems or replacing older VFDs in 575V three‑phase washdown applications.
Usage and Maintenance Instructions
Install vertically on a flat, cool, dry surface with adequate ventilation; avoid direct sunlight, moisture, and corrosive fumes. Ensure all power and control wiring complies with local codes and is securely tightened before power‑up. Monitor operating temperature, current, and vibration regularly during operation. Keep cooling vents and fans clear of debris to prevent overheating. Periodically inspect terminals for tightness, corrosion, or overheating signs. Clean the enclosure exterior with mild detergent and water; do not use harsh chemicals or high‑pressure washers directly on the drive. Do not exceed the 0–40°C ambient range. Disconnect all power before maintenance or inspection. Store spare units in a cool, dry, dust‑free environment.
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