12F5C1B-350A KEB Combivert F5 Compact Drive 4kW 3-Phase Inverter

Product Overview

The 12F5C1B-350A is a high-performance frequency inverter from the KEB COMBIVERT F5 Compact series. Engineered for precision motor control, this 4kW drive combines sensorless vector technology with a robust power stage. It handles demanding 3-phase applications with a wide output frequency range up to 800 Hz. The compact book-style housing optimizes cabinet space while providing high torque performance at low speeds.

Technical Specifications

• Brand: KEB (Karl E. Brinkmann)
• Model: 12F5C1B-350A
• Series: COMBIVERT F5 Compact
• Power Rating: 4 kW (5 HP) / 6.6 kVA
• Input Voltage: 3-Phase 400 VAC (50/60 Hz)
• Rated Input Current: 13.3 Amperes
• Rated Output Current: 9.5 Amperes
• Output Frequency: 0 to 800 Hz (High-speed spindle compatible)
• Control Type: Sensorless Vector Control
• Protection Class: IP20 Standard
• Dimensions: 220mm Height x 90mm Width x 160mm Length
• Weight: Approximately 2 kg (4.4 lbs)

Drive Configuration Breakdown

• 12F5C1B-350A [Combivert F5 Compact System]
  • └── Inverter Bridge [3-Phase 400V Class Power Conversion]
  • └── I/O Interface [8 Digital Inputs / 2 Analog Inputs / 2 Relay Outputs]
  • └── Braking Control [Integrated Braking Transistor/Chopper]
  • └── EMC Filter [Built-in suppression for industrial noise compliance]

System Integration & Diagnostic Power

• Target Machinery: Specifically suited for CNC spindles, plastic extruders, and high-speed conveyors.
• Communication: Dual RS232/RS485 interface supporting Modbus RTU protocols.
• Protection Features: Advanced monitoring for overcurrent, DC link undervoltage, and motor thermal protection.
• Environmental Resilience: Operates efficiently in ambient temperatures from -10°C to +45°C.

Global PLC Spare HUB's Insight

The 12F5C1B-350A is a cornerstone of European industrial drive technology. Engineering personnel value this KEB model for its staggering 800 Hz output capability, a feature rarely found in drives of this size. The "Compact" series design is a masterclass in space efficiency; fitting 5HP of power into a 9cm wide frame allows for massive reductions in control cabinet density. At Global PLC Spare HUB, we recommend the 12F5C1B-350A for high-torque applications where traditional V/f drives fail to provide the necessary dynamic response.

Logistics & Warranty Terms

• Condition: New and original in factory-standard industrial packing.
• Warranty: Covered by a 12-month comprehensive technical warranty.
• Dispatch Speed: Professional testing and shipment within 24-48 hours.
• Global Logistics: Expedited priority delivery via FedEx, UPS, and DHL.

Expert FAQ & Selection Guide

• Does the 12F5C1B-350A require an external braking resistor?
• The drive includes an internal braking transistor; an external resistor is only needed for high-duty cycle deceleration.
• Is this drive compatible with both synchronous and asynchronous motors?
• Yes, the F5 Compact series supports sensorless vector control for both motor types.
• What is the maximum output frequency I can set?
• The 12F5C1B-350A can operate at up to 800 Hz, making it ideal for high-speed machining.
• Field Experience Tip:
• Ensure vertical mounting with 100mm clearance above and below the unit to leverage the internal cooling fan effectively.
• Selection Advice:
• Confirm your input current requirements; at 13.3A, ensure your upstream fusing is rated correctly for the F5 compact's peak draw.

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