Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | 0-57670-A |
| Manufacturer | Reliance Electric (AutoMax product family) |
| Product Type | Universal Drive Controller (UDC) module |
| System Compatibility | Reliance AutoMax PLC / drive rack |
| Mounting | Plugs directly into AutoMax rack backplane |
| Drives Controlled | 2 simultaneous (AC, DC, or one of each) |
| Rack Capacity | Up to 10 modules per AutoMax drive rack (20 drives) |
| Processor | Programmable microprocessor |
| Communication | RS-485 serial port |
| Supported Protocols | Modbus RTU, Reliance DSI (Drive Serial Interface) |
| Logic Power | Supplied via AutoMax backplane |
| Diagnostics | Front-panel status LEDs, fault/alarm word reporting |
| Configuration | AutoMax programming environment register access |
| Dimensions | 2.2 × 12.4 × 12.6 cm |
| Weight | 2.23 kg |
| Origin | USA |
| Lifecycle Status | Discontinued; supplied as new surplus / refurbished / remanufactured |
| Certifications | UL, CE (typical; dependent on build) |
Main Features and Advantages
The defining capability of the Reliance Electric 0-57670-A is true dual-technology drive control. One module handles two drive loops at once and can mix an AC drive with a DC drive, so a plant does not need separate controller families for legacy DC sections and newer AC sections. This cuts spare-parts inventory, training overhead and panel space — a meaningful advantage when a single line carries both technologies.
Backplane-native integration is the second major strength. The Reliance Electric 0-57670-A draws logic power from and communicates over the AutoMax rack backplane, eliminating point-to-point wiring between the PLC and each drive. AutoMax drive control blocks map directly to the module’s registers, so engineers program and tune drives inside the same environment they use for the rest of the machine logic. Start, stop, speed reference, acceleration/deceleration, feedback and fault status all move on the same high-speed bus, keeping control deterministic and troubleshooting traceable.
For retrofit and remote operations, the serial interface adds real value. Modbus RTU and DSI on the onboard RS-485 port let a host AutoMax processor, HMI or SCADA system poll process data, fault codes and parameter sets and perform remote tuning without opening the enclosure. In a large drive room this saves hours of panel access and makes condition-based maintenance genuinely practical.
Diagnostics are built into the hardware rather than added on. Front-panel status LEDs give maintenance staff an immediate read on module health, while alarm and fault words can be read remotely to identify the failing drive, fault type and sequence of events. That visibility shortens mean time to repair and supports the kind of historical fault logging required by predictive-maintenance programs. Compact dimensions (2.2 × 12.4 × 12.6 cm) and rugged US-built construction suit the harsh, high-vibration environments of steel mills, paper machines and heavy process lines where the AutoMax platform earned its reputation.
