LUST LTi CDA32.004 C1.4 H08 B0 Servo Controller 230 V AC
The LUST LTi CDA32.004 C1.4 H08 B0 is a servo controller from the CDA32 series, a product family developed by LUST Antriebstechnik and later marketed under the LTi Drives brand. This variant is designed for a 230 V AC mains connection, which distinguishes it from the 400 V units in the same range and makes it suitable for installations where only a lower voltage supply is available. The full configuration code identifies the power rating, the control board variant C1.4 and the additional option codes H08 and B0, which define specific hardware and interface features fitted at the factory.
The CDA32 series was developed for industrial motion applications that require accurate speed and torque control in a compact package. The 230 V AC variants are commonly used in smaller machines, laboratory equipment, special purpose machinery and retrofit projects where the electrical supply is limited to a single phase or lower voltage three phase configuration. Despite the lower supply voltage, the control architecture remains identical to that of the higher voltage units in the family, so commissioning procedures and parameter structures are consistent.
Product Overview
The CDA32.004 C1.4 H08 B0 operates as a single axis servo controller. It converts the 230 V AC supply into a controlled output voltage and frequency that drives a servo motor. The internal power stage uses pulse width modulation with a high switching frequency, producing smooth current waveforms, low torque ripple and quiet motor operation. The control core executes current, velocity and position loops in a closed cascade, with each loop independently tunable to match the mechanical characteristics of the connected load.
The unit is intended for cabinet mounting and can be installed alongside other drives in a multi axis arrangement. Where the DC link is accessible, shared bus operation allows braking energy from one axis to be used by another, improving energy efficiency and reducing the load on braking resistors. The drive supports rotary servo motors and, in appropriate configurations, linear motors, giving machine designers flexibility in how axes are implemented.
Key Features and Functional Highlights
Feedback support covers resolver, incremental encoder and absolute encoder interfaces, depending on the configuration code. Automatic commutation detection reduces commissioning effort when the motor and drive are paired for the first time. Parameter sets can be stored internally and transferred between units, which simplifies machine replication and spare parts handling.
Integrated monitoring functions continuously evaluate current, voltage, temperature and following error. When a limit is exceeded, the drive triggers a defined fault response and disables the output stage, protecting the motor and the mechanical system. Braking energy generated during deceleration can be dissipated through an external braking resistor connected to the DC link, allowing moderate inertia loads to be stopped quickly without overvoltage trips.
Digital and analog inputs and outputs provide fast interfacing with machine signals such as enable, limit switches, reference pulses and brake control. A motor holding brake output is available for vertical axes. The unit is protected against overcurrent, overvoltage, undervoltage and overtemperature conditions, and it includes an electronic motor overload model that estimates winding temperature without additional sensors.
Technical Specifications
The CDA32.004 C1.4 H08 B0 is designed for a 230 V AC mains connection. Its compact power stage suits small and medium sized servo motors used in positioning and speed control tasks. The output frequency range extends across a wide band, supporting both standard servo motors and higher speed applications. Where a shared DC link is available, several drives can be connected to a common bus so that braking energy from one axis can be reused by another.
Communication with the higher level controller is handled through a fieldbus interface or through conventional analog and digital signals, depending on the configuration. Supported fieldbus protocols across the platform include CANopen, PROFIBUS, EtherCAT and others. This flexibility allows the drive to be used both in centralized motion architectures, where a central controller issues position commands, and in decentralized architectures, where the drive performs positioning tasks locally.
Performance and Advantages
Short current loop cycle times produce fast response to torque commands and minimize following error during dynamic moves. The velocity loop can be tuned with adjustable gain, integral time and filter settings, so that resonance in the mechanical train can be suppressed without sacrificing bandwidth. Because the 230 V AC design allows operation from a lower voltage supply, the drive can be used in machines that do not have a 400 V three phase feed available, which simplifies electrical installation in smaller systems.
Support for both rotary and linear motors reduces the number of different drive types required in a machine. The modular configuration coding system means that a single base platform can be adapted to different feedback types and fieldbus systems by selecting the appropriate ordering code, which simplifies spare parts planning and documentation.
Application Areas
The CDA32.004 C1.4 H08 B0 is used in compact industrial machines and special purpose equipment. Typical applications include small machine tool axes, packaging and labelling units, handling and assembly stations, laboratory and test rig positioning systems, textile machinery and general automation installations where a 230 V AC supply is available. Its compact dimensions make it suitable for multi axis machines with limited cabinet space.
Installation and Commissioning
Installation begins with verifying the mains voltage, the motor rating and the feedback type. The drive must be mounted vertically with sufficient clearance above and below to allow convection cooling. Shielding of the motor cable is essential for electromagnetic compatibility, and the shield should be bonded to the cabinet ground at both ends using a large contact area. Motor and feedback cables should be routed separately from mains and signal cables to reduce interference.
Commissioning typically starts with entering the motor data, either manually or by selecting a stored motor dataset. The feedback system is then checked for correct direction and resolution. After the current loop is verified, the velocity and position loops are tuned using step response tests or automatic tuning routines. Finally, the fieldbus parameters, limit values and fault responses are configured and stored in non volatile memory.
Maintenance and Diagnostics
The drive includes a diagnostic memory that records fault codes, operating hours and critical parameter values at the moment of a trip. This information is valuable when tracing intermittent problems. Regular maintenance consists of checking cabinet cooling, verifying terminal torque, inspecting cable shields and clearing dust from heatsink fins. Fan units, where fitted, should be replaced according to the recommended service interval.
System Integration and Compatibility
The CDA32.004 C1.4 H08 B0 integrates into automation systems through its fieldbus interface or through conventional analog and digital signals. It can be combined with other drives in the same family on a shared DC bus, and it supports master slave torque distribution for mechanically coupled axes. Because the parameter structure is consistent across the CDA32 range, engineering effort can be reused when additional axes are added to a machine.
Selection Guidance
When selecting this drive, the key considerations are the available mains voltage, continuous and peak motor current, motor inductance, feedback type, required fieldbus protocol and the available cabinet space. The 230 V AC design of the CDA32.004 C1.4 H08 B0 suits compact machines and installations where a 400 V supply is not available. For higher power requirements, other members of the same family provide larger ratings while retaining identical control functionality.
Conclusion
The LUST LTi CDA32.004 C1.4 H08 B0 is a compact servo controller designed for 230 V AC operation, offering precise closed loop control in a small package. Its configuration coding allows it to be tailored to specific machine requirements, while its diagnostic and monitoring features support reliable long term operation. For engineers designing or maintaining motion systems that operate from a lower voltage supply, this drive remains a well understood and practical component.
