KEB COMBIVERT F4 13.F4.4C1D-4025 5.5kW Inverter

The KEB COMBIVERT F4 13.F4.4C1D-4025 is a 5.5 kW variable frequency drive designed for three-phase induction motor control in industrial applications. Operating on 400V AC power, this inverter provides precise speed and torque control for pumps, fans, conveyors, and other machinery. The drive includes a TEACH pendant (00.F4.010-2009) for simplified programming and setup, making it accessible to operators without extensive drive configuration experience.

Product Overview

The COMBIVERT F4 series from KEB represents a generation of compact, high-performance variable frequency drives engineered for reliability and ease of use. The 13.F4.4C1D-4025 model is rated for 5.5 kW continuous output power, suitable for a wide range of industrial motor control applications. The drive features sensorless vector control, providing high starting torque and excellent speed regulation without requiring an encoder feedback device. The F4 series incorporates advanced IGBT technology for efficient power conversion and low motor noise. The drive's compact design allows installation in standard control cabinets, with dimensions that minimize required panel space. The included TEACH pendant (00.F4.010-2009) is a handheld programming unit that provides intuitive access to drive parameters, real-time monitoring, and diagnostic functions. The TEACH pendant connects to the drive via a standard serial interface, allowing operators to configure the drive without opening the cabinet door.

Technical Specifications

The 13.F4.4C1D-4025 operates on a three-phase 400V AC power supply with a tolerance of ±10%, at 50/60 Hz. The rated output power is 5.5 kW, with an output current rating of 11.5 A continuous and 17.3 A for 60 seconds overload capacity. The output frequency range is 0 to 400 Hz, with 0.01 Hz resolution. The drive supports V/f control, sensorless vector control, and closed-loop vector control with optional encoder feedback. The control method is selectable via parameters, allowing optimization for different application requirements. The drive includes 4 digital inputs, 2 digital outputs, 1 analog input (0-10V or 4-20mA), and 1 analog output (0-10V). The communication interface includes an RS-485 port supporting Modbus RTU protocol. The drive's efficiency exceeds 96% at rated load, contributing to energy savings in continuous operation. The carrier frequency is adjustable from 2 to 16 kHz, allowing compromise between motor noise and drive losses. The power factor is >0.95, reducing reactive power draw from the supply.

TEACH Pendant (00.F4.010-2009) Features

The TEACH pendant 00.F4.010-2009 is a handheld programming and diagnostic tool specifically designed for KEB COMBIVERT F4 drives. The pendant features a backlit LCD display that shows parameter values, operating status, and fault messages in plain text, eliminating the need to interpret numeric codes. The keypad includes dedicated keys for start, stop, jog, and direction control, as well as navigation keys for parameter browsing and editing. The TEACH pendant connects to the drive's front panel interface using a standard coiled cable, providing mobility during setup. The pendant supports copying parameter sets from one drive to another, enabling rapid configuration of multiple drives in a system. The TEACH function allows operators to set drive parameters by demonstrating the desired motor behavior rather than entering numeric values. For example, the drive can learn acceleration and deceleration times by recording the operator's manual control of the motor via the pendant. The pendant also provides real-time monitoring of output frequency, current, voltage, power, and motor temperature. Fault history is accessible through the pendant, displaying the last 10 fault events with time stamps for troubleshooting.

Control Modes and Performance

The COMBIVERT F4 drive offers multiple control modes to suit different application requirements. V/f control is suitable for basic speed control applications such as fans and pumps, where precise torque control is not required. Sensorless vector control provides high starting torque (up to 150% at 0.5 Hz) and accurate speed regulation (±0.5% of base speed) without an encoder, making it suitable for conveyors, extruders, and hoists. Closed-loop vector control requires an encoder feedback card and provides even higher performance, with speed regulation of ±0.01% and full torque at zero speed for holding applications. The drive's autotuning function measures the connected motor's electrical parameters and automatically sets optimal control gains, improving performance without manual tuning. The drive includes an integrated PID controller for process control applications such as pressure, flow, or temperature regulation. The PID setpoint can be provided via analog input or keypad, and the feedback is connected to a second analog input or serial communication.

I/O and Communication Capabilities

The 13.F4.4C1D-4025 provides a comprehensive set of I/O for integration with PLCs and other control systems. The 4 digital inputs are configurable for functions including run/stop, forward/reverse, fault reset, multi-speed selection, and PID enable. The inputs accept 24V DC signals, either sinking or sourcing depending on configuration. The 2 digital outputs are relay contacts rated for 250V AC / 30V DC at 2A, suitable for signaling drive status, frequency arrival, or fault conditions. The analog input accepts 0-10V or 4-20mA signals, selectable via jumper, with 10-bit resolution. The analog output provides 0-10V signal proportional to output frequency, current, or torque, useful for external monitoring or control. The RS-485 communication port supports Modbus RTU protocol at baud rates up to 115.2 kbps, allowing the drive to be controlled and monitored by a PLC, HMI, or SCADA system. The drive supports up to 32 Modbus addresses on a single network, enabling multi-drive systems with minimal wiring.

Protection Features

The COMBIVERT F4 incorporates extensive protection features to safeguard the drive and connected motor. Overcurrent protection trips when output current exceeds 200% of rated current. Overvoltage protection activates when DC bus voltage exceeds 800 VDC for 400V class drives. Undervoltage protection triggers when input voltage drops below approximately 300 VAC. Overload protection uses an electronic thermal overload model with adjustable time constant to match motor characteristics. Over temperature protection uses a thermistor mounted on the heatsink to detect excessive internal temperature and reduce output or trip accordingly. Short circuit protection on output terminals prevents damage from motor cable shorts. Ground fault protection detects current leakage to ground. Phase loss protection monitors input and output phases for missing connections. The drive also includes stall prevention during acceleration and deceleration, which automatically adjusts the output frequency to prevent overcurrent or overvoltage trips. All fault conditions are stored in the fault history with a time stamp, and the drive can be configured to automatically reset certain faults after a user-defined delay.

Applications

The 13.F4.4C1D-4025 is suitable for a wide range of industrial applications requiring 5.5 kW motor control. Typical uses include pumps where variable speed provides flow control with energy savings compared to throttling valves; fans and blowers where speed reduction significantly reduces power consumption; conveyors requiring controlled acceleration and deceleration to prevent product damage; extruders needing precise speed regulation for consistent product quality; mixers and agitators where speed variation optimizes mixing efficiency; and small hoists and cranes requiring controlled lifting and lowering with load holding capability. The drive's compact size and robust construction make it suitable for mounting directly on machinery or in control cabinets. The TEACH pendant simplifies setup for applications where the drive configuration may need to be adjusted by maintenance personnel who are not drive experts.

Installation and Environmental Requirements

The 13.F4.4C1D-4025 should be mounted vertically on a flat, non-flammable surface within a control cabinet. Minimum clearances of 100 mm above and below the drive and 20 mm on the sides are required for proper airflow. The operating temperature range is -10°C to +50°C, with derating required for temperatures above 40°C. The drive must not be installed in environments with conductive dust, corrosive gases, or high humidity (above 90% non-condensing). The altitude limit for full rating is 1000 meters above sea level, with derating of 1% per additional 100 meters up to 4000 meters. The power wiring should be sized according to local electrical codes, typically 2.5 mm² for input and output connections. The motor cable should be shielded and the shield grounded at both ends for EMC compliance. The drive includes an internal EMC filter for compliance with CE emission standards, but external filters may be required for sensitive environments. The control wiring should be separated from power wiring by at least 200 mm to prevent noise coupling. The grounding terminal must be connected to a dedicated ground with impedance of less than 10 Ω.

Parameter Configuration and Operation

The COMBIVERT F4 uses a structured parameter set organized into functional groups including basic settings, motor parameters, control parameters, I/O configuration, protection settings, and communication parameters. The TEACH pendant provides plain-text parameter names and values, simplifying navigation. The drive includes a quick-start menu that guides users through essential parameters for basic operation, reducing setup time to minutes. The parameter set can be saved to the TEACH pendant's internal memory and copied to other drives, ensuring consistent configuration across multiple units. The drive's operating mode (local or remote) is selectable via a parameter or digital input. In local mode, speed commands come from the TEACH pendant or keypad; in remote mode, commands come from analog inputs or serial communication. The drive can be operated in run/stop or three-wire control configurations, compatible with various machine control schemes. The drive includes a diagnostic mode that displays real-time values of all monitored parameters, with the ability to freeze the display for troubleshooting intermittent faults. The TEACH pendant also supports password protection to prevent unauthorized parameter changes.