Overview
The Reliance 2GU41020 is a microprocessor-based PWM AC drive from the trusted GP-2000 series, engineered for versatile industrial speed control applications. This 20HP model delivers 21.5KVA of power capacity and operates on standard 460V 3-phase industrial power systems. The unit combines advanced pulse-width modulation technology with robust construction, making it a reliable choice for motor speed regulation in manufacturing, HVAC, material handling, and other demanding industrial environments.
Key Features
- 20 horsepower (21.5KVA) motor control capacity with 27A maximum output
- 460V 3-phase 50/60Hz input with 32.7A maximum input current
- Fully digital microprocessor control with enhanced diagnostics and repeatability
- Full spectrum switching technology to eliminate PWM acoustic motor noise
- Built-in keypad and display for simplified operation and monitoring
- NEMA 1 Type 1 enclosure design with multiple mounting options
- Compatible with Reliance V*S series style motors and standard AC induction motors
Technical Specifications
The 2GU41020 operates with an AC input of 460V 3-phase 50/60Hz, rated for a maximum of 32.7 amps. Motor output ranges from 0–460V at up to 27 amps and 20–60Hz frequency. The drive delivers a peak motor sine-wave output of 24.5A. Overall enclosure dimensions are approximately 500mm (H) × 279mm (W) × 277mm (D), or roughly 43″ × 17″ × 17″ in imperial units, weighing approximately 25 kg (250 lbs). The drive input is rated at 26.1 KVA with a rated output of 21.5 KVA @ 0.8 power factor.
Typical Applications
The Reliance 2GU41020 is suited for speed control in pump and fan applications, conveyor systems, compressor drives, machine tool spindle motors, and general industrial process control requiring variable frequency output. Its robust microprocessor design and diagnostic capabilities make it reliable for continuous-duty and intermittent-duty applications in manufacturing, water treatment, HVAC systems, and material handling equipment. The drive’s full spectrum switching eliminates acoustic noise, making it suitable for noise-sensitive environments.
Compatibility & Replacements
Compatible With
- Reliance V*S series AC motors (15KW/20HP and compatible ratings)
- Standard 3-phase AC induction motors rated for 20HP or less
- 450–480V 3-phase industrial power systems
- AutoMate and AutoMax controller platforms via Rail Interface Card (1SC4000 kit)
- Systems requiring 0–460V variable frequency output at 20–60Hz
Replaces / Drop-In Replacement For
- Original Reliance 2GU41020 units in operational systems
- Baldor-Reliance GP-2000 2GU41020 drives (historically cross-branded)
- Asea Brown Boveri GP-2000 equivalents from certain production years
Works With
- Reliance V*S motor series
- Remote I/O controllers and AutoMate/AutoMax platforms
- Hard-wired Emergency Stop circuits and standard 3-phase power input/output wiring
- Preset speed selection and torque boost functionality
- DC braking with adjustable amplitude and duration
