14F5A1E-3A0A KEB Combivert F5 11kVA 7.5kW Frequency Inverter In Stock

Product Overview

The 14F5A1E-3A0A is an 11 kVA high-performance frequency inverter from KEB engineered for controlled AC motor drives in industrial automation.

Belonging to the premier Combivert F5 series, this 7.5 kW drive delivers precise speed and torque regulation across 3-phase asynchronous and synchronous motors.

The unit features an integrated GTR7 braking transistor to safely dissipate regenerative energy during rapid motor deceleration.

Equipped with an efficient forced-air heatsink cooling system, it maintains low operating temperatures under heavy duty cycles.

Engineers deploy the 14F5A1E-3A0A to optimize drive efficiency, protect machinery from mechanical stress, and maintain tight velocity control in complex automated lines.

Technical Specifications

• Brand: KEB
• Part Number: 14F5A1E-3A0A
• Series: Combivert F5 Inverter Series
• Product Type: Controlled Multi Frequency Inverter
• Apparent Power Rating: 11 kVA
• Recommended Motor Output: 7.5 kW (10 HP) 2/4-Pole at 50/60 Hz
• Input Voltage Range: 305 V AC to 528 V AC, 3-Phase
• Rated Input Current: 23.1 A
• Output Voltage Range: 0 V to Uin, 3-Phase
• Rated Output Current: 16.5 A
• Short-Time Overload Current: 29.7 A maximum peak limit
• Maximum Output Frequency: Up to 599 Hz (Standard) / 1600 Hz (High-Frequency Option)
• Switching Frequency: 8 kHz default carrier frequency
• Brake Chopper Hardware: Integrated GTR7 braking transistor
• Cooling Mechanism: Air cooler heatsink with active fan forced ventilation
• Ingress Protection Rating: IP20 enclosure protection
• Physical Dimensions (W x H x D): 130 mm x 290 mm x 208 mm (5.12 in x 11.42 in x 8.19 in)

Application Scenarios & System Compatibility

The 14F5A1E-3A0A frequency inverter provides flexible motion control across a wide spectrum of factory automation equipment.

Target Industrial Machinery:

• High-speed CNC router spindles, grinding heads, and milling machinery
• Automated packaging lines, indexing tables, and multi-axis conveyor systems
• Extruders, plastic injection molding auxiliary drives, and wire-drawing machinery
• Industrial ventilation blowers, centrifugal pumps, and hoisting gear drives

Diagnostic & Drive Control Capabilities:

• Continuous monitoring of motor phase currents to prevent stall and overcurrent trips
• Real-time thermal tracking of power transistors and heatsink temperature gradients
• Programmable acceleration/deceleration ramps with smooth S-curve profile smoothing
• Dynamic braking control via GTR7 chopper to prevent DC bus overvoltage faults during rapid stopping

Installation Guidelines & Commissioning Notes

• Mount the unit vertically on a flat panel inside an IP54 control cabinet to ensure optimal airflow across the heatsink.
• Maintain a minimum clearance of 100 mm above and below the drive chassis for unrestricted air ventilation.
• Install an external braking resistor across the GTR7 terminals if your application involves high-inertia stopping loads.
• Connect line reactors or EMI filters on the input side to suppress supply voltage transients and harmonics.
• Ensure solid protective earthing (PE) grounding connections using short, heavy-gauge grounding straps.

Ordering, Packaging & Shipping Terms

• Box Contents: 1x KEB 14F5A1E-3A0A drive module in original manufacturer packaging.
• Protective Packaging: ESD-safe moisture barrier wrap encased inside impact-resistant industrial foam molding.
• Dispatch Lead Time: In-stock inventory ships within 24 to 48 hours following payment verification.
• Global Express Shipping: Fast door-to-door worldwide delivery via FedEx, UPS, or DHL.
• Warranty Coverage: Supported by a comprehensive 12-month factory quality replacement warranty.

Global PLC Spare HUB's Insight

In our field automation support experience, DC bus overvoltage faults (E.OP) on Combivert F5 drives usually point to braking resistor misconfigurations rather than inverter hardware failures.

During a recent emergency callout at a woodworking facility, a main cutter drive using a 14F5A1E-3A0A module tripped repeatedly on DC bus overvoltage whenever the spindle ramped down quickly.

The plant staff suspected a burnt-out internal IGBT bridge and requested a replacement inverter unit.

Our technicians inspected the cabinet and discovered that the external braking resistor connected to the internal GTR7 transistor had open-circuited due to improper thermal sizing.

Replacing the external resistor with a properly rated wirewound unit cleared the trip error immediately and restored full 8-second emergency stopping times without replacing the drive hardware.

Purchasing Guide & Selection Criteria

Confirm that your motor's full load current does not exceed the drive's 16.5 A continuous output rating at 400V 3-phase.

Verify whether your dynamic application requires an external braking resistor to work alongside the built-in GTR7 brake chopper.

Check the physical enclosure dimensions (130 x 290 x 208 mm) against your panel space to ensure adequate heatsink depth and mounting pitch.

Frequently Asked Questions

Question: Can I operate a standard 50 Hz induction motor above base speed using the 14F5A1E-3A0A inverter?

Answer: Yes, you can run motors into the constant horsepower field-weakening region up to 599 Hz, provided the motor bearings and rotor balance are rated for high RPM operation.

Question: What function does the internal GTR7 component perform during drive operation?

Answer: The GTR7 is an integrated braking transistor switch that routes excess regenerative energy from the DC link bus to an external braking resistor during rapid motor braking.

Question: How do I resolve an E.UP (Under Voltage) error on my Combivert F5 display screen?

Answer: Measure the incoming 3-phase AC supply voltage at terminals L1, L2, and L3 to verify it remains within the specified 305 V to 528 V AC operational window.

Question: Is an external line filter required when installing this 7.5 kW drive in a factory environment?

Answer: While the drive operates standalone, installing an external mains choke or EMI filter is strongly advised to meet European EMC standards and protect sensitive field sensors from drive noise.

Question: What is the maximum peak current this module can output during high-torque startup events?

Answer: The drive provides a maximum short-time limit current of 29.7 A for temporary overload conditions such as starting heavy machine loads from a dead stop.

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