0-52850
0-52850 (Reliance Electric)
Product Overview
Legacy IRFA interface ring firing assembly PCB, dedicated to generating firing pulses and phase control for Reliance Electric DC drives.
Description
Model Definition
0-52850 is the official part number of Reliance Electric. IRFA stands for Interface Ring Firing Assembly, acting as ring counter and SCR firing card for DC drive systems.
Technical Specifications
Standard 18D plug-in circuit board for drive rack installation. Equipped with ring counter circuit and pulse generation circuit. Integrated resistors, capacitors, logic chips and pulse transformers. Designed for industrial working environment. The product has been officially discontinued.
Interfaces & Communication
Adopts edge connector to connect with drive backplane. Outputs SCR firing pulses to power unit. Receives synchronization signals and feedback signals via hard wiring. No digital communication interface.
Key Features
Accurate timing control via built-in ring counter. Stable SCR firing and phase angle regulation. Built-in surge protection and anti-interference circuit. Industrial grade components for long-term operation.
Application
Compatible with Reliance MaxPak and AutoMax series DC drives. Widely used in industrial DC motor control systems such as conveyors and processing equipment. Applied for maintenance and replacement of old drive units.
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