Lenze EMB9342-C Regenerative Power Supply Module | Series 9300

Technical Specifications Breakdown

Key parameters for the EMB9342-C are listed below for quick reference:

Industry Applications

This regenerative power supply module is particularly suited for applications with frequent start-stop cycles, such as:

• Material handling systems: Conveyors and hoists that decelerate heavy loads benefit from energy recovery, reducing peak power demand.
• Centrifugal pumps and fans: Variable-speed drives that need to brake quickly can return energy to the grid, improving overall plant efficiency.
• Machine tools: Spindle drives and axis motors that undergo rapid deceleration can recover energy, lowering operating costs.

By choosing a regenerative module instead of a standard braking resistor, facilities can cut energy waste and reduce heat dissipation in control cabinets.

Installation & Setup Guidance

When installing the EMB9342-C, ensure the operating voltage range (320 to 528 VAC) matches your supply. The module is designed for a main frequency of 48 to 62 Hz, so it is compatible with most industrial grids. Mount the unit in a clean, dry environment, as the IP20 protection class only guards against solid objects larger than 12 mm. Provide adequate clearance for airflow to maintain ambient temperatures between 0 and 40°C. For installations above 1,000 meters, derating is required—consult the manual for specific derating factors. Always follow local electrical codes and use proper fusing and disconnecting means.

Maintenance & Reliability

Regular inspection of the module's cooling fans and heatsinks is recommended to prevent overheating. Since the module operates with an estimated power loss of 200 W, ensure ventilation paths are not obstructed. Check all power connections periodically for tightness and signs of corrosion. The IP20 rating means the unit is not dust-tight, so in dusty environments, schedule more frequent cleaning. Avoid exposing the unit to condensing moisture or freezing temperatures.

Regenerative Power Supply Module for Efficient Energy Recovery

Industrial drives often waste energy during deceleration. The Lenze EMB9342-C regenerative power supply module addresses this by feeding braking energy back into the supply network, reducing overall power consumption and improving system efficiency. As part of the Series 9300, this module is engineered for demanding applications where energy recovery is critical.

Compatibility & Integration

The EMB9342-C is part of the Lenze Series 9300 drive family. It is designed to work with compatible Lenze drives that have a DC bus connection. The module's rated DC bus current of 26 A and maximum current of 36 A must be coordinated with the total DC bus load of the connected drives. Ensure that the drive's DC bus capacitance and charging circuitry are compatible with the regenerative module to avoid overvoltage conditions.

Selection Guide & Purchasing Advice

When selecting a regenerative power supply module, verify the voltage, current, and power ratings against your application's requirements. The EMB9342-C offers a rated active power of 14 kW and a maximum output of 21.6 kW, making it suitable for medium-power drive systems. For higher power requirements, consider other modules in the Series 9300 line. At AutoDCSTech, we stock genuine Lenze parts and can help you find the right module for your system. Contact our team to confirm availability and lead times.

Troubleshooting & Common Issues

If the module fails to regenerate energy, check the DC bus voltage and ensure the drive is configured for regenerative operation. Overvoltage alarms may occur if the DC bus capacitance is too high or if the line impedance is too low. If the module overheats, verify that the ambient temperature is within the 0 to 40°C range and that airflow is not restricted. For persistent issues, consult the Lenze documentation or contact AutoDCSTech for technical support. Always disconnect power before servicing.