RELIANCE 0-57670-A Universal Drive Controller for AutoMax Systems

Product Overview

The RELIANCE 0-57670-A is a versatile Universal Drive Controller engineered by Reliance Electric, now part of the Rockwell Automation family, specifically designed for the MaxPak Plus modular drive platform. This compact yet powerful AC drive delivers robust motor control for a wide range of industrial automation applications, offering both standard V/Hz and advanced sensorless vector control modes to accommodate diverse load requirements. The RELIANCE 0-57670-A serves as the intelligent link between motors and supervisory control systems, integrating power conversion, motor logic, and communication capabilities within a single space-efficient module suitable for DIN-rail or panel mounting. Its 3 HP (2.2 kW) output rating makes the RELIANCE 0-57670-A an ideal solution for continuous-run equipment such as cooling tower fans, circulation pumps, and packaging line conveyors.

As a key member of the MaxPak Plus family, the RELIANCE 0-57670-A features a built-in RS-485 serial communication port supporting both the proprietary DSI (Drive Serial Interface) protocol and standard Modbus RTU, enabling seamless integration with AutoMax DCS systems or third-party PLC networks. The RELIANCE 0-57670-A is equipped with a Class B internal EMC filter compliant with EN 61800-3 standards, significantly reducing electromagnetic interference and eliminating the need for external filtering components. Its comprehensive protection suite—including overcurrent, overvoltage, undervoltage, overtemperature, motor stall, and ground fault detection—ensures reliable operation in demanding industrial environments. Whether used in new installations or retrofit projects upgrading from contactor-based control, the RELIANCE 0-57670-A delivers the perfect balance of performance, reliability, and cost-effectiveness for small to medium-sized motor drive applications.

Description

Technical Specifications

Parameter Name	Parameter Value
Product Model	0-57670-A
Manufacturer	Reliance Electric (Rockwell Automation)
Product Type	Universal AC Drive / Variable Frequency Drive
Series/Platform	MaxPak Plus
Rated Power	3 HP (2.2 kW)
Input Voltage	230 VAC ±10%, 3-Phase, 50/60 Hz
Output Voltage	0–230 VAC (Adjustable)
Output Frequency Range	0–400 Hz
Control Methods	V/Hz, Sensorless Vector Control
Overload Capacity	150% Rated Current for 60 Seconds
Communication Interface	RS-485 (DSI / Modbus RTU Protocol)
EMC Filter	Built-in Class B (EN 61800-3)
Mounting Type	DIN-Rail or Panel Mount
Protection Class	IP20 (Cabinet Installation Only)
Cooling Method	Forced Air (Built-in Fan)
Operating Temperature	0°C to +40°C (Derating to 50°C)
Display	4-Digit LED Front Panel

Main Features and Advantages

Flexible Control for Diverse Applications: The RELIANCE 0-57670-A offers dual control modes to match application requirements precisely. Standard V/Hz control provides reliable performance for constant or variable torque loads such as fans and pumps, while the sensorless vector control mode delivers enhanced low-speed torque accuracy for applications demanding better dynamic response. This flexibility allows the RELIANCE 0-57670-A to be deployed across a broad spectrum of industrial equipment without requiring hardware modifications. The RELIANCE 0-57670-A also features a 150% overload capacity for 60 seconds, providing the short-term torque boost needed for occasional heavy loads or startup conditions.

Ease of Configuration and Open Connectivity: Field setup of the RELIANCE 0-57670-A is remarkably straightforward, thanks to its intuitive front panel interface. Parameter adjustments can be made directly using the four-digit LED display and navigation buttons, allowing rapid commissioning without a laptop. For network integration, the RELIANCE 0-57670-A supports both Reliance DSI protocol for high-speed synchronization with AutoMax PLCs and PowerFlex masters, and Modbus RTU for compatibility with third-party systems. Switching between protocols requires only two parameter changes, giving the RELIANCE 0-57670-A exceptional integration flexibility. The internal RS-485 port enables remote start/stop, frequency setpoint adjustment, and real-time status monitoring from a central control room.

Built-in EMC Compliance and Protection: The RELIANCE 0-57670-A includes a factory-installed Class B EMC filter, reducing high-frequency harmonics that could interfere with nearby instrumentation and control equipment. This integrated solution eliminates the cost and panel space requirements of external filters. The RELIANCE 0-57670-A further protects itself and connected motors through comprehensive fault detection: overcurrent, overvoltage, undervoltage, overtemperature, motor stall, and ground fault conditions all trigger automatic shutdown with visible fault indication. Its modular construction allows complete unit replacement without disassembling power components, dramatically reducing mean time to repair (MTTR) and minimizing production downtime.