1. General Information

• Manufacturer: Reliance Electric (Rockwell Automation)

• Part Number: 0-51772-3R (also written as 0517723R)

• Product Type: Drive Control PCB / System Interface Board

• Series: 0-51772-xR (includes 0-51772-1R, 0-51772-9R, etc.)

• Application: Reliance FlexPak 3000, GV3000, AutoMax DCS drives & legacy automation systems

• Function: Signal conditioning, feedback processing, drive logic control, I/O interfacing

• Status: Obsolete (discontinued); available as used / refurbished / new old stock

• Warranty: 12 months (refurbished)

• Marking: “0-51772-3R”, Reliance Electric logo, revision code

2. Electrical Specifications

• Backplane Power: +5 VDC, ±15 VDC

• Power Consumption: ~3–6 W

• Signal Interfaces: Analog inputs (0–10 VDC, 4–20 mA), digital I/O (24 VDC logic), encoder / resolver feedback ports

• Isolation: 500 VDC (signal-to-logic)

• Protection: Overvoltage, surge, reverse polarity, ESD protection

• Connector: Edge connector (backplane), screw terminals / header pins (field)

3. Physical & Mechanical

• Dimensions (W × H × D): Standard Reliance card size (~220 × 150 mm)

• Weight: Approx. 0.7–0.9 kg

• Form Factor: Rack-mount PCB for Reliance standard 19” / subrack chassis

• Construction: Industrial-grade FR4 PCB, conformal coated (moisture/dust resistance)

• Components: Through-hole & surface-mount devices, electrolytic capacitors, power transistors, opto-isolators

4. Environmental Ratings

• Operating Temperature: 0°C to +60°C (industrial range)

• Storage Temperature: -20°C to +70°C

• Humidity: 5%–95% RH, non-condensing

• Vibration: 10–150 Hz, 0.1 mm amplitude (control cabinet rated)

5. Compatibility

• Drive Systems: FlexPak 3000 DC drives, GV3000 AC drives, AutoMax DCS 5000

• Related Boards: 0-51668-1 (process control interface), 0-51486-17 (analog input), 0-51771-7R (control logic)

• Replacement: Direct replacement for 0-51772-1R / -9R (same form/fit, minor firmware differences)

6. Installation & Notes

1. Power Off: Disconnect all system power before insertion/removal.

2. Rack Slot: Insert into dedicated Reliance drive rack slot; secure with card retainers.

3. Wiring: Connect field signals (analog/digital/feedback) to designated terminals.

4. Verification: Confirm ±15 VDC and +5 VDC at backplane connector; check LED status indicators post power-up.

5. Common Issues: Capacitor aging, solder joint fatigue, connector oxidation (refurbished units include reflow & component replacement).