Description
592-EC3ED Allen‑Bradley solid-state electronic overload relay
Product Dimensions：
Product Detailed Description
The Allen-Bradley 592-EC3ED is a solid-state electronic overload relay from the Bulletin 592 E3 Plus series, manufactured by Rockwell Automation. It is designed to provide advanced protection for single-phase or three-phase squirrel cage induction motors by monitoring and responding to overload conditions, phase imbalances, and other faults. This relay features a microprocessor-based control unit that delivers precise, ambient-compensated overload protection, along with integrated diagnostics and communication capabilities. It mounts directly to NEMA Size 3 contactors (Bulletin 500 series) and includes DeviceNet connectivity for remote monitoring and configuration. The 592-EC3ED supports features like warning diagnostics, low-level ground fault protection, and PTC thermistor input for over-temperature monitoring, making it suitable for demanding industrial environments requiring reliable motor safeguarding.
Product Parameters
| Parameter | Specification |
|---|---|
| Series | E3 Plus (Bulletin 592) |
| Current Range | 18–90 Amps (adjustable) |
| Voltage Rating | 690V AC (IEC); 600V AC (UL) |
| Insulation Voltage | 690V AC |
| Impulse Withstand Voltage | 6 kV AC |
| I/O Configuration | 4 Inputs, 2 Outputs |
| Protection Features | Overload, phase loss, phase imbalance, ground fault, PTC thermistor input |
| Communication | DeviceNet (slave device; supports polled I/O, cyclic, explicit, and group 4 messaging) |
| Mounting | Direct mount to NEMA Size 3 contactors |
| Trip Classes | Selectable (e.g., 10, 15, 20, 30) |
| Reset Mode | Automatic/Manual |
| Enclosure Rating | NEMA 3 (IP54 equivalent) |
| Operating Temperature | -20°C to 70°C (ambient compensated) |
| Dimensions (H x W x D) | Approximately 5.5 x 3.5 x 4.5 inches (standard for series) |
| Weight | Approximately 2.5 lbs (1.13 kg) |
Product Advantages
- Advanced Diagnostics and Monitoring: Provides real-time data on phase currents (in Amps and % of FLC), average current, thermal capacity utilization, ground fault levels, trip/warning status, and time-to-trip via DeviceNet, enabling predictive maintenance and reducing downtime.
- Comprehensive Motor Protection: Offers ambient-compensated overload protection, zero-sequence ground fault detection, phase loss/imbalance safeguards, and PTC thermistor integration for stator temperature monitoring, outperforming traditional thermal relays in accuracy and sensitivity.
- Seamless Integration: Direct DeviceNet connectivity and integrated I/O (4 inputs/2 outputs) allow easy incorporation into automation systems without additional modules, supporting efficient network-based control.
- Flexibility and Scalability: Adjustable current settings and selectable trip classes accommodate a wide range of motor applications; backward-compatible with legacy systems while supporting modern fieldbus protocols.
- Reliability in Harsh Environments: Solid-state design with NEMA 3 rating ensures durability against dust, moisture, and vibrations, with a proven track record in industrial settings for minimizing false trips and extending motor life.
Precautions and Notes
- Installation: Ensure proper mounting on compatible NEMA Size 3 contactors; verify wiring for three-phase operation and ground fault sensor alignment to avoid improper protection. Use only certified Rockwell Automation accessories for DeviceNet cabling.
- Configuration: Program via DeviceNet tools or manual dials; test PTC thermistor input compatibility with motor specifications before commissioning to prevent over-temperature false alarms.
- Environmental Limits: Operate within -20°C to 70°C ambient temperature; avoid exposure to corrosive atmospheres or excessive humidity (>95% non-condensing) to maintain IP54 integrity.
- Maintenance: Periodically inspect for dust accumulation on terminals; reset only after fault diagnosis via DeviceNet parameters to prevent recurring issues. Do not exceed 90A continuous current to avoid thermal damage.
- Safety: Disconnect power before servicing; the relay does not provide short-circuit protection—pair with appropriate fuses or circuit breakers. Consult Rockwell Automation for firmware updates if integrating with newer PLCs.
Product Applications
The 592-EC3ED is ideal for industrial motor control applications requiring robust protection and network integration, including:
- Manufacturing Lines: Safeguarding conveyor belts, pumps, and fans in automotive or food processing plants.
- HVAC Systems: Protecting compressors and blowers in commercial buildings with precise overload and ground fault detection.
- Water/Wastewater Treatment: Monitoring pumps and agitators for phase imbalances in harsh, wet environments.
- Material Handling: Securing cranes, hoists, and elevators with real-time diagnostics via DeviceNet.
- General Industrial Automation: Integrating into PLC-based systems for motors up to 90A in oil & gas, mining, or pharmaceutical sectors, where downtime minimization is critical.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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