General Information

• Part Number: 0-48680-522UR

• Manufacturer: Reliance Electric / Rockwell Automation

• Product Type: IGBT Gate Drive Board, Unregulated/Universal Revision (UR)

• Application: Reliance GP2000 series AC drives (460 VAC / 575 VAC), universal gate drive interface for high‑power IGBTs

• Status: Obsolete legacy; new surplus / rebuilt / repaired units available

Electrical Specifications

• Control Supply: 24 VDC ±10%, 0.8 A typical

• Power Stage Voltage: 460 VAC / 575 VAC (3‑phase)

• Function: Generates, isolates, and amplifies gate drive signals; universal (unregulated) design supports multiple IGBT types; includes power circuit interfacing and fault sensing

• Gate Drive Output: ±15 V / 3 A peak per channel (unregulated, adjustable via external resistors)

• Isolation Voltage: 2500 Vrms (control to power section)

• Key Components: High‑speed optocouplers, gate drive transformers, power resistors, HV capacitors, transient suppressors, current sense circuits

• Protection Features: Overcurrent, shoot‑through, undervoltage, overvoltage, and thermal fault detection; fault signaling to main CPU board

• dv/dt Control: User‑adjustable gate resistors for EMI and switching loss optimization

Mechanical Specifications

• Form Factor: Plug‑in industrial PCB (card‑type), GP2000 standard slot profile

• Dimensions (W×H×D): approx. 220 mm × 120 mm × 30 mm

• Weight: approx. 0.7 kg (1.54 lb)

• Construction: FR‑4 PCB, conformal coated, through‑hole components

• Mounting: Slot‑mounted in GP2000 drive cabinet; edge‑connector interface to backplane; screw terminals for power wiring

Environmental Ratings

• Operating Temperature: 0 °C to +55 °C

• Storage Temperature: −40 °C to +70 °C

• Humidity: 5%–95% RH, non‑condensing

• Vibration: 1 g (10–100 Hz), industrial grade

Key Features

• UR (Unregulated/Universal) Revision:

  • No fixed gate drive voltage; adjustable for compatibility with diverse IGBT modules

  • Wider IGBT support than standard 522B

  • Enhanced noise immunity and fault tolerance

  • Field‑configurable gate resistors for different power ratings

• Dedicated high‑power IGBT gate drive for GP2000 series

• Electrical isolation between low‑voltage control and high‑voltage power sections

• Optimized switching waveforms for reduced losses and higher efficiency

• Comprehensive fault detection and reporting to CPU

• Direct OEM replacement for Reliance GP2000 drives

• Repairable, typically with 2‑year warranty

Compatibility

• Fits: Reliance Electric GP2000 series 460 VAC / 575 VAC AC drives

• Family: 0‑48680 series

  • 522UR = Universal/unregulated gate drive board

  • 522B = Enhanced standard gate drive board

  • 521 = Standard gate drive board

  • 514 = Snubber board

  • 211 = Power supply board

  • 101/109 = Control CPU board