Product Details

The RELIANCE 0-51446 is a discontinued CardPak series signal processing control card for Reliance Electric classic analog DC drive rack systems, widely used in papermaking, metallurgy, wire drawing, rolling mill and other heavy-duty industrial production lines. It cooperates with regulator board and other functional cards in the same rack to realize analog signal conditioning, reference signal generation, closed-loop auxiliary adjustment and fault signal transmission for the DC drive unit.

This plug-in CardPak circuit board adopts analog operational amplifier and discrete logic circuit design. It can process speed feedback signal, current sampling signal and external given signal, and output adjusted reference signal to the speed regulation loop. It has over-limit comparison and alarm latch functions. It belongs to the dedicated functional card of Reliance legacy analog DC drive platform, cannot be directly replaced by other series circuit boards without rack matching, wiring confirmation and loop calibration. Multiple CardPak cards can be installed in one rack to build multi-loop coordinated control system.

It is equipped with gold-plated edge connectors and standard CardPak mounting structure, supporting plug-in replacement inside the drive cabinet. The PCB layout adopts anti-vibration and anti-electromagnetic interference design to adapt to harsh industrial sites with strong power interference and mechanical vibration. Users need to confirm the rack type, slot definition and card version before replacement. This legacy RELIANCE 0-51446 card is mainly used for maintenance of old DC drives and production line renovation projects. Signal inspection and no-load commissioning are required after installation. A conformal coated version is optional for high humidity and dusty industrial sites. This control card is widely used in Reliance old DC drive repair, industrial production line transformation and DC motor closed-loop speed control systems.

This CardPak control card is powered by the drive rack power supply. The edge connector supports quick plug replacement for convenient on-site inspection and maintenance. The optimal operating temperature range is 0°C to 55°C, storage temperature ranges from -40°C to +85°C, relative humidity 5% to 85% non-condensing. It complies with industrial shock, vibration and EMC standards and has CE certifications. It supports parameter backup for fast recovery after hardware replacement.

This RELIANCE 0-51446 CardPak control card is widely applied in Reliance analog DC drive control systems. It completes signal conditioning and reference processing for the drive speed loop. As a reliable spare part for Reliance legacy drive systems, the 0-51446 retains original control logic characteristics, helping customers reduce maintenance cost of old industrial equipment.