6. Function & Positioning

• Core Function: Precision 8-loop drive parameter regulation; independent adjustment of Max Spd, Min Spd, Accel Rate, Decel Rate, IR Comp, Curr Limit, Gain, Bias via front-panel dials. Provides stable analog control signals for drive regulation loops, with enhanced filtering and surge protection for harsh environments.

• Positioning: High-performance analog tuning and calibration board for Reliance heavy-duty DC/AC drives; critical for optimizing dynamic response and steady-state accuracy under variable loads.

7. Core Performance Parameters

• Control Dials: 8 × 10-turn rotary potentiometers (0–10 scale, ±0.1% resolution)

• Regulation Ranges:

  • Max/Min Speed: 0–100% (0–10 VDC analog output)

  • Accel/Decel Rate: 0–10 (time constant adjustment)

  • IR Compensation: 0–10 (voltage drop compensation)

  • Current Limit: 0–100% (overcurrent protection)

  • Gain: 0–20 (proportional loop gain)

  • Bias: ±10% (offset adjustment)

• Accuracy: ±0.2% full scale

• Response Time: ≤ 50 ms

• Isolation: 500 VDC (control ↔ power circuits)

• Operating Temperature: 0°C ~ +55°C

• Storage Temperature: -40°C ~ +85°C

• Protection: EMI/RFI filtering, transient voltage suppression, short-circuit protection

8. General Matching Accessories

• Drive main control rack (Reliance Cardpack series)

• Analog signal cable harness (shielded, 16AWG)

• Rack mounting hardware (screws, brackets)

• Dial adjustment tool (small flathead screwdriver)

• Replacement faceplate (0-51851-6 specific)

• Backplane connector (compatible with

0-51851-6 Full Product Information

1. Product Model

   Model Number: 0-51851-6
2. Brand

   Brand: Reliance Electric, affiliated with Baldor and ABB Group
3. Product Category

   Category: Industrial drive analog regulating control board

   Type: Drive loop parameter tuning circuit board
4. Alias

   Official Name: CRCG Regulator Control Board

   Other Names: Eight-knob adjustment board, drive speed regulation calibration board, multi-parameter setting board
5. Basic Information

   Manufacturer: Reliance Electric USA

   Installation type: Standard plug-in cabinet circuit board

   Product status: Discontinued, used as industrial spare replacement parts

   Structural feature: Equipped with eight precision adjusting knobs on front panel

   NSN Code: 6110-01-245-8507
6. Function & Positioning

   Core Function: Manually set and adjust maximum speed, minimum speed, acceleration, deceleration, current limit, loop gain and signal offset through front knobs, output standard analog control signals to complete drive closed-loop debugging and parameter matching.

   Product Positioning: High-grade full-function tuning control board for heavy-duty variable speed drives, suitable for precise performance debugging and working condition matching of high-precision drive equipment.
7. Core Performance Parameters

   Adjustment component: Eight independent 10-turn high-precision potentiometers

   Output control signal: 0-10VDC standard analog signal

   Full-scale control accuracy: ±0.2%

   Circuit isolation voltage: 500VDC

   Operating temperature: 0℃ ~ +55℃

   Storage temperature: -40℃ ~ +85℃

   Built-in anti-interference circuit, surge suppression and overcurrent protection design
8. General Matching Accessories

   Drive main control board, shielded analog signal wire, cabinet fixing parts, wiring terminals, knob adjusting tools
9. Applicable Equipment & Industry

   Applicable Equipment: Reliance MaxPak series DC drives, VS spindle drives, GV3000 series AC variable speed drives

   Applicable Fields: CNC machine tools, metallurgical equipment, textile machinery, printing equipment, industrial automation production lines, heavy machinery speed control systems