A-B 193-EEFD Universal Analog Input

Product Detailed Description

• Function:

• Provides thermal overload protection for AC motors by monitoring motor current and calculating its thermal state.

• Trips the associated contactor/circuit when the motor's thermal capacity is exceeded, preventing damage due to sustained overcurrents, locked rotor conditions, or phase loss.

• Offers adjustable trip classes (10, 15, 20, 30) to match various motor starting characteristics and applications.

• Includes enhanced phase loss protection, quickly detecting and responding to conditions where one or more phases are lost.

• Features thermal memory, which models the heating and cooling effects of motor on and off periods for more accurate protection of both hot and cold motors.

• Provides both manual and automatic reset options.

• Includes N.C. (Normally Closed) trip contact and N.O. (Normally Open) alarm contact for integration into control circuits and signaling.

• Features:

• Self-Powered Design: Eliminates the need for a separate control power supply, simplifying wiring and reducing heat generation in control cabinets.

• Wide 5:1 Adjustment Range: Covers a broad range of Full Load Current (FLA) settings, significantly reducing the number of different overload relay models required in inventory.

• Direct Contactor Mounting: Designed for direct mounting to Allen-Bradley 100-C30, 100-C37, or 100-C43 3-pole contactors, creating a sturdy two-component starter assembly.

• Adjustable Trip Class: Selectable trip classes (10, 15, 20, 30) via DIP switches or potentiometer, allowing customization for specific motor applications.

• Reset Type Selection: Configurable for automatic or manual reset.

• Trip Indication: Visual indication of a trip condition.

• Low Energy Consumption: Minimizes heat rise inside control cabinets.

• Rugged Construction: Over-molded power connections and separately secured current transformers provide resistance to shock and vibration.

• Isolated Contacts: N.C. trip contact and N.O. alarm contact are isolated, allowing application in circuits with different voltage levels and no polarity restrictions.

Product Parameters

• Current Adjustment Range (FLA): 9 to 45 Amperes

• IEC Operating Voltage: Up to 690 V

• Contact Rating: 45 A (for power connections)

• Control Contacts: 1 N.C. (Trip), 1 N.O. (Alarm)

• Trip Class (Adjustable): Class 10, 15, 20, 30

• Reset Type: Automatic and Manual selectable

• Phase Loss Protection: Yes (enhanced)

• Thermal Memory: Yes

• Power Consumption (Electronic Design): Very low (e.g., 150 mW reported on some sites)

• Mounting: Direct mount to Allen-Bradley 100-C30, 100-C37, or 100-C43 contactors

• Terminal Type: Screw Terminals (optional Cage Clamp control terminals may be available on some 193-EE variants)

• Certification: CE, UL, CSA (typically)

• Operating Temperature: Generally for industrial control cabinet environments (refer to specific datasheet for exact range).

Product Advantages

• Superior Motor Protection: Provides more accurate and consistent thermal modeling compared to bimetallic relays, leading to better protection against various overload and fault conditions.

• Reduced Inventory: The wide 5:1 adjustment range means fewer part numbers are needed to cover a broad current range, simplifying stocking and reducing costs.

• Energy Efficient: Self-powered design and low power consumption minimize heat generation within control panels, potentially reducing cooling requirements.

• Enhanced Phase Loss Protection: Quicker response to phase loss conditions helps prevent severe motor damage.

• Easy Setup and Installation: Simple dial-in setting for FLA, direct mounting to contactors, and clear indication simplify installation and commissioning.

• Thermal Memory: Protects motors more effectively during intermittent operation by accounting for residual heat.

• Robust Design: Built to withstand industrial environments, offering high reliability and longevity.

Precautions

• Obsolete Status: As of April 2021, the 193-E1 Plus series (including 193-EEFD) has been discontinued by Rockwell Automation. While still available from surplus suppliers, consider the long-term availability of parts and support. The recommended replacement is the Allen-Bradley E100 Electronic Overload Relay.

• Contactor Compatibility: Ensure direct mounting is only done with the specified Allen-Bradley 100-C30, 100-C37, or 100-C43 3-pole contactors.

• Correct FLA Setting: Accurately dial in the motor's Full Load Amps (FLA) rating on the potentiometer for proper protection.

• Trip Class Selection: Select the appropriate trip class (10, 15, 20, or 30) based on the motor's starting current and duration. Class 10 is for standard, fast-starting motors; higher classes are for motors with longer starting times.

• Wiring: Follow the wiring diagrams carefully for power, motor, and control circuit connections. Ensure proper grounding.

• Reset Mode: Choose between manual and automatic reset based on application safety requirements. Manual reset is generally preferred for safety-critical applications.

• Environmental Conditions: Install the relay within its specified operating temperature and humidity ranges.

• Troubleshooting: Understand the trip indications and diagnostic features to effectively troubleshoot motor faults.

Product Applications

The Allen-Bradley 193-EEFD Electronic Overload Relay is suitable for a wide range of industrial motor control applications where reliable and accurate overload protection is critical, especially for standard 3-phase AC motors.

• Pumps: Protecting various types of pumps (centrifugal, positive displacement) from overload.

• Fans and Blowers: Ensuring the safe operation of industrial ventilation and air handling systems.

• Conveyors: Protecting motors driving conveyor belts from overcurrents due to jams or heavy loads.

• Compressors: Providing thermal protection for compressor motors.

• Machine Tools: Protecting motors in lathes, mills, drills, and other machine tools.

• Packaging Machinery: Safeguarding motors in packaging lines.

• HVAC Systems: Used in industrial and commercial HVAC systems for motor protection.

• General Purpose Motor Control: Any application requiring precise and reliable overload protection for 3-phase AC motors that do not require advanced communication or complex motor diagnostics (for which more advanced overload relays or protective relays would be used).

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapor

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