Product Description

Model Number Interpretation

• 402388: Base part number for Reliance’s industrial potentiometer series.

• 11: Indicates 10‑turn mechanical configuration and 2 kΩ resistance value.

• W: Denotes the specific electrical and mechanical variant for high‑power drive applications.

• 800-1892: Alternate part number for cross‑reference and replacement purposes.

Technical Specifications

• Resistance: 2 kΩ, ±10% tolerance.

• Mechanical Turns: 10 turns (multi‑turn for high resolution).

• Resistive Element: Carbon composition, low noise, long service life.

• Voltage Rating: Up to 575 VAC for drive‑level control circuits.

• Operating Temperature: ‑40°C to +85°C.

• Dimensions: 79.5 × 114 mm.

• Mounting: Panel‑mount with standard industrial shaft.

• Weight: Approximately 0.09 kg (0.2 lbs).

Interface & Communication Configuration

• Electrical Interface: Three‑terminal connection (wiper and two fixed ends) for variable resistance output.

• Control Signal: Provides an analog voltage signal proportional to shaft position for speed/voltage reference.

• Compatibility: Directly compatible with Reliance HR2000, UDC series, and Allen‑Bradley Variable High Power Systems.

• Communication: No digital communication interface; operates via hardwired analog signals.

Core Functions

• Precision Adjustment: Enables fine, stable speed and voltage trimming through 10‑turn mechanical adjustment.

• Signal Regulation: Delivers accurate analog feedback for maintaining drive setpoints in industrial motion control.

• Legacy System Support: Serves as a drop‑in replacement for original potentiometers in aging Reliance/Allen‑Bradley drive systems.

• Durable Performance: Carbon element construction ensures reliable operation in harsh industrial environments.

Application Scenarios

• Reliance HR2000 and UDC Series Drives: Speed reference and voltage trimming for DC and AC drive systems.

• Allen‑Bradley Variable High Power Systems: Process control and motor speed regulation in heavy‑duty industrial applications.

• CNC Machine Tools, Packaging Machinery, Conveyor Systems: Precision speed adjustment for synchronized motion control.

• Legacy Equipment Maintenance: Replacement part for older Reliance drive systems to extend operational life.

Usage & Maintenance Instructions

• Installation: Mount vertically on control panels or drive fronts; ensure adequate clearance for shaft rotation and ventilation.

• Wiring: Connect three terminals to drive control circuits per system schematics; verify insulation resistance before power‑on.

• Operation: Adjust shaft smoothly within 10‑turn range to avoid mechanical damage; monitor output voltage for stability.

• Maintenance: Perform quarterly inspections to clean dust, check terminal tightness, and verify shaft rotation smoothness.

• Safety: Disconnect all power sources before maintenance; allow capacitors to discharge fully to prevent electric shock.