Reliance 2GC21005
May 28, 2026

Reliance 2GC21005

The 2GC21005 is a 5HP (3.7kW) 3-phase AC variable speed drive (VFD) from Reliance Electric’s GP-2000 series, designed for general-purpose industrial motor control. It operates on 200/230VAC input and is widely used for fans, pumps, conveyors, and small machinery in manufacturing and process industries. This model is discontinued, with refurbished and surplus units available for legacy system maintenance and replacement.

Description

Product Description

The 2GC21005 is a 5HP (3.7kW) 3-phase AC variable speed drive (VFD) from Reliance Electric’s GP-2000 series, designed for general-purpose industrial motor control. It operates on 200/230VAC input and is widely used for fans, pumps, conveyors, and small machinery in manufacturing and process industries. This model is discontinued, with refurbished and surplus units available for legacy system maintenance and replacement.

Model Number Interpretation

  • 2: Standard industrial drive series

  • GC: GP-2000 series AC drive platform

  • 21005: 200/230VAC input, 5HP power rating, hardware revision 05

Technical Specifications

  • Motor Power: 5 HP (3.7 kW)

  • Input Voltage: 200/230 VAC ±10%, 3-phase, 50/60 Hz

  • Output Voltage: 0–230 VAC, 3-phase, 0–400 Hz

  • Rated Current: 15 A continuous

  • Control Modes: V/F (Volts/Frequency) control

  • Protection: Overcurrent, overvoltage, undervoltage, overtemperature, short-circuit, ground fault

  • Operating Temp: 0 °C to +45 °C

  • Mounting: Panel-mount (NEMA 1 enclosure)

  • Weight: ~6.4 kg (14.1 lbs)

  • Dimensions: 250 × 180 × 120 mm (H×W×D)

Interface and Communication Configuration

  • Power Terminals: Main AC input, motor output, DC bus braking terminals

  • Control I/O: ±10 V analog input (speed reference), 24 VDC digital I/O (start/stop, fault reset, jog)

  • Communication: Reliance proprietary protocol (no standard fieldbus ports)

  • Indicators: LED status lights (power, run, fault); 7-segment display for fault codes and parameters

  • Feedback: No encoder port (sensorless V/F control only)

Core Functions

  • Precision Speed Control: Regulates speed for 5HP 3-phase AC motors with V/F control

  • Energy Efficiency: Optimizes power consumption for variable-torque loads (fans, pumps)

  • Dynamic Braking: Supports external brake resistor for rapid deceleration

  • Fault Diagnostics: Real-time monitoring with fault code logging for quick troubleshooting

  • Parameter Programming: Onboard display for configuration of acceleration/deceleration, limits, and I/O

Application Scenarios

  • Factory Automation: Conveyor lines, packaging machinery, small assembly equipment

  • Process Industry: Pumps, fans, mixers, and agitators requiring variable-speed control

  • Material Handling: Light-duty cranes, hoists, and lift equipment with 5HP AC motors

  • Legacy System Upgrades: Direct replacement for older Reliance GP-2000 drives in modernized lines

Usage and Maintenance Instructions

  • Installation: Mount in a clean, well-ventilated cabinet; allow 50 mm clearance for airflow

  • Wiring: Use shielded cables for motor/control signals; torque terminals to 1.2 N·m; verify input voltage before power-up

  • Operation: Power on control circuit first, then main power; set parameters per motor nameplate

  • Maintenance: Inspect connections quarterly; clean heat sink/filters semi-annually; check brake resistor condition

  • Safety: Disconnect all power and wait 5 minutes for DC bus capacitors to discharge before service


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