Product Description The 1AC4102 is a 2HP (1.5kW) general-purpose V/Hz AC variable-speed drive from the Reliance Electric GP-1200 series, available in 1AC4102U (UL-listed standard enclosure) and 1AC4102G (global/380–460VAC version). It is designed for driving standard induction motors in light industrial and commercial applications. This model is discontinued; new old stock and refurbished units are widely used for legacy equipment replacement and maintenance. Model Number Interpretation 1: 1AC series (GP-1200 AC drive platform) AC: AC variable-speed drive 4102: 460VAC, 2HP power rating U: Universal standard enclosure, UL listed G: Global version, 380–460VAC input Technical Specifications Input: 3-phase 460VAC (380–460VAC for 1AC4102G), ±10% tolerance, 50/60Hz; max input current 4.2A Output: 3-phase 460VAC; max output current 3.4A; rated capacity 2.7kVA Power: 2HP (1.5kW) continuous Control: Open-loop V/Hz; speed ratio 20:1; output frequency 0–400Hz Enclosure: NEMA 1, IP20 (indoor use) Protection: Overcurrent, overvoltage, undervoltage, overtemperature, short circuit, ground fault, motor stall Ambient: 0–45°C, 5%–95% RH (non-condensing) Weight: ~11.3kg Interface and Communication Configuration Power Terminals: L1/L2/L3 (3-phase input), U/V/W (motor output), PE (protective earth) Control Terminals: Digital (start/stop, forward/reverse, fault reset); analog (0–10VDC speed reference); relay output (fault, 250VAC/5A) Communication: No onboard ports; hardwired control only Core Functions V/Hz open-loop control for stable speed with standard induction motors Compact, cost-effective design for 2HP light-duty loads 0–10VDC analog speed input (compatible with potentiometers, PLCs) Comprehensive electrical/thermal protection for drive and motor Direct replacement for legacy 1AC series drives Application Scenarios Small conveyors, fans, pumps, mixers (2HP motors) Light processing equipment, commercial ventilation systems Retrofit/maintenance of older industrial/commercial AC drive systems Usage and Maintenance Instructions Mount vertically in clean, dry, ventilated indoor space; allow clearance for cooling Use rated copper wire; separate power/control cables to reduce EMI Inspect connections before power-up; check terminals/wiring regularly Disconnect power before cleaning; use dry cloth (no liquids/chemicals) Monitor heat sinks/terminals for overheating/corrosion Diagnose faults via onboard indicators; resolve issues before restart Avoid static discharge; do not disassemble without professional guidance Store spares in cool, dry, dust-free environment