Overview
The Reliance 0-51831-2 is a specialized CVTC (Current Voltage Transductor) printed circuit board manufactured by Reliance Electric, a leader in industrial motor control and automation components. This PC board functions as a precision measurement and feedback interface in control systems, converting current and voltage signals into standardized 4V feedback outputs suitable for controller inputs. The Reliance 0-51831-2 is part of the established 0-51831 series and is commonly found in legacy industrial control cabinets, AC drives, and sequencer-based control systems.
Key Features
- Current and voltage sensing with selectable input ranges (100mV, 150mV, 240V, 500V)
- ±4V feedback output suitable for analog controller inputs
- Adjustable potentiometers for calibration and fine-tuning
- Dual-channel feedback capability (ARM CURRENT and ARM VOLTAGE)
- Compact PCB design compatible with standard control panel mounting
- Proven reliability in industrial process control applications
Technical Specifications
- Part Number: 0-51831-2 (also referenced as O-51831-2, 051831-2)
- Manufacturer: Reliance Electric
- Product Type: Current Voltage Transductor (CVTC) Circuit Board
- Output Type: ±4V feedback signals
- Input Ranges: 100mV, 150mV, 240V, 500V selectable
- Feedback Channels: Dual (ARM CURRENT FB, ARM VOLTAGE FB)
- Form Factor: Printed Circuit Board with connector terminals
Typical Applications
- Industrial DC motor drive systems
- AC variable frequency drives (VFDs) requiring current/voltage feedback
- Process control systems with analog signal measurement
- Legacy Reliance Electric control cabinets and sequencers
- Motor speed and torque regulation circuits
- Industrial automation equipment requiring current limiting or voltage sensing
Compatibility & Replacements
Compatible With
- Reliance Electric AutoMax controller systems
- Reliance Electric AC and DC drive systems
- Industrial sequencer-based control cabinets
- Standard 115/230V industrial control panels
- Legacy motor control equipment from 1990s–2010s era
Replaces / Drop-In Replacement For
- Verify compatibility with your system integrator before ordering. The Reliance 0-51831 series includes models 0-51831-1, 0-51831-3, and 0-51831-8, which are similar but not identical. Confirm part number with original control system documentation.
Works With
- Reliance Electric drive control software and firmware
- Industrial control systems using 4–20mA or voltage-based analog feedback loops
- Standard industrial connectors and terminal blocks
- Legacy PLC and motion control architectures
