Product Overview
As industrial automation evolved from simple motor starters to sophisticated variable frequency drives, the demand for compact, reliable, and flexible control solutions grew. The KEB 12F5C1B-350A Combivert F5 Compact Drive meets this need by delivering robust performance in a space-saving design. This 4 kW drive handles a wide range of general-purpose applications, from conveyors to pumps, with precise speed and torque control.
Technical Specifications
The KEB 12F5C1B-350A offers key specifications that ensure reliable operation in demanding environments:
- Input: 400 VAC, 3-phase, 50/60 Hz, 13.3 A rated input current
- Output: 0-400 VAC, 0-599 Hz (with capability up to 0-800 Hz per data), 9.5 A rated output current
- Power: 4 kW (5 HP) with 6.6 kVA apparent power
- Enclosure: IP20 mechanical protection for indoor use
- Temperature Range: -10 to +45 °C operating, -25 to +70 °C storage
- Built-in Braking Resistor: Yes, for dynamic braking
- EMC Filter: Available upon request
The drive includes 2 analog inputs, 8 digital inputs, 2 analog outputs, and 2 relay outputs, providing flexible I/O for various control schemes. Communication via RS232/RS485 with Modbus RTU protocol enables easy integration into existing networks. Sensorless vector control ensures high-performance motor regulation without an encoder.
Industry Applications
In manufacturing facilities, the KEB 12F5C1B-350A excels in conveyor systems, where its 0-800 Hz output frequency allows precise speed adjustments for different product lines. For HVAC applications, the drive’s built-in braking resistor and sensorless vector control improve energy efficiency and reduce mechanical wear. The compact dimensions (22 cm height, 9 cm width, 16 cm depth) and lightweight design (2 kg) make it suitable for retrofit projects where space is limited.
Installation & Setup Guidance
Mount the KEB 12F5C1B-350A vertically on a flat, non-flammable surface to ensure adequate airflow. Maintain clearance around the IP20 enclosure for cooling. Connect the 3-phase 400 VAC supply to the input terminals, and the motor to the output terminals, following the wiring diagram provided in the manual. Configure parameters via the integrated keypad or RS232/RS485 interface using Modbus RTU. Set the motor nameplate data and select sensorless vector control for optimal performance.
Maintenance & Reliability
To maximize the service life of the KEB 12F5C1B-350A, inspect the cooling fan and air filters periodically for dust accumulation. Operate within the -10 to +45 °C ambient temperature range to prevent overheating. The built-in braking resistor handles regenerative energy, reducing stress on the DC bus. With proper installation and routine checks, this drive delivers reliable operation in general-purpose automation tasks.
Selection Guide & Purchasing Advice
Before purchasing the KEB 12F5C1B-350A, verify that your motor’s voltage and current ratings match the drive’s output (0-400 VAC, 9.5 A). Confirm that the 4 kW power rating meets your application requirements. For applications requiring EMC compliance, request the optional EMC filter. SpareTechPLC offers this model with fast shipping and expert support to help you find the right drive for your system.
Frequently Asked Questions
Q: What is the maximum output frequency of the KEB 12F5C1B-350A?
A: The drive supports output frequencies from 0 to 800 Hz, as specified in the data.
Q: Does this drive include a built-in braking resistor?
A: Yes, the KEB 12F5C1B-350A comes with a built-in braking resistor for dynamic braking.
Q: What communication protocols are supported?
A: It supports RS232/RS485 with Modbus RTU protocol.
Q: What is the IP rating of this drive?
A: The enclosure is rated IP20 for indoor use.
Q: Can I use this drive with a single-phase supply?
A: No, the KEB 12F5C1B-350A requires a 3-phase 400 VAC input.
