KEB 14F5A1E-3A0A Combivert F5 Inverter | 7.5kW 400V | Oiltech

KEB Combivert F5 – 14F5A1E-3A0A Frequency Inverter

The 14F5A1E-3A0A is a robust frequency inverter from KEB Combivert F5 series. It delivers 11 kVA power for 7.5 kW AC/DC motors. This unit operates on 400V 3-phase input. It is a controlled drive with integrated brake transistor (GTR7) and air cooling. Ideal for demanding industrial speed control applications.

Core Technical Specifications

• Model: 14F5A1E-3A0A (KEB Combivert F5).
• Rated power: 11 kVA / 7.5 kW (2/4P motor, 50/60 Hz).
• Input voltage: 305 to 528 V AC, 3-phase.
• Output voltage: 0 to Uin (variable).
• Rated output current: 16.5 A (short-time limit 29.7 A).
• Output frequency range: 0 to 599 Hz (max).
• Switching frequency: 8 kHz.
• Protection class: IP20 (cabinet installation).
• Dimensions (WxHxD): 130 x 290 x 208 mm.
• Brake transistor: GTR7 integrated.
• Cooling: Forced air cooling (heatsink).

Oiltech Controls’s Insight – Application Notes

• The F5 series is known for its rugged construction and reliable torque control.
• We recommend this drive for conveyor systems, fans, and pumps.
• Its 599 Hz output makes it suitable for high-speed spindle applications.
• Brake transistor GTR7 allows dynamic braking without external module.
• IP20 design means it must be installed in a clean, dry control cabinet.

Typical Equipment & Systems

• Industrial conveyor belts and material handling systems.
• Centrifugal pumps and blowers in HVAC or process plants.
• Machine tool spindles requiring up to 599 Hz.
• Extruders and mixers with variable torque demands.
• Retrofit for older KEB drives or competitor units (e.g., Siemens, ABB).

Expert FAQ – Selection & Operation

• Q: Can this drive run a motor rated for 400V only?
  Yes. The input range is 305-528V, so it works with 400V nominal systems. Set the motor parameters correctly in the F5 keypad.
• Q: What is the maximum cable length to motor?
  For 8 kHz switching frequency, keep motor cable under 50 m. For longer runs, reduce switching frequency to 4 kHz or add output filters.
• Q: Do I need an external braking resistor?
  Only if the internal GTR7 brake transistor is not sufficient for your deceleration energy. Check the duty cycle; for high-inertia loads, external resistor is recommended.
• Q: Is the 14F5A1E-3A0A compatible with single-phase input?
  No. This is a 3-phase only drive. Single-phase operation will cause undervoltage faults.
• Q: How to reset a fault after overcurrent trip?
  Press the STOP/RESET key on the keypad. If fault persists, check motor insulation and cable connections. We advise a megger test before restarting.

Why Buy From Oiltech Controls?

• 15+ years in industrial automation – we know drives inside out.
• Every unit, including surplus or refurbished, is tested before shipping.
• We support obsolete systems and can advise on compatible replacements.
• Global express shipping via FedEx, UPS, or DHL – dispatch within 24-28 hours.
• 12-month warranty gives you peace of mind.

Shipping, Warranty & Contact

• Dispatch time: 24-28 hours from order confirmation.
• Carriers: FedEx, UPS, DHL (tracked and insured).
• Warranty: 12 months against manufacturing defects.
• Technical inquiries: info@oiltechcontrols.com | +86 158 8020 0923 (WhatsApp).

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