Description
The EMG ID43.03 is a high-performance, single-axis servo drive designed for precise control of AC synchronous and asynchronous motors in demanding industrial motion applications. As part of EMG’s renowned ID Series, this drive combines advanced control technology with a compact form factor to deliver dynamic motion performance for tasks requiring high torque, speed accuracy, and rapid response. The primary function of the EMG ID43.03 is to translate a low-power command signal from a master controller (such as a PLC or motion controller) into the high-power electrical currents needed to drive a servo motor with exceptional precision. It is engineered to manage complex motion profiles, including precise positioning, velocity control, and torque regulation.
The EMG ID43.03 is typically rated for a specific power range, often around 30-40 kW, making it suitable for driving medium to large-sized servo motors in heavy-duty applications. It features sophisticated feedback interfaces to support high-resolution encoders and resolvers, ensuring closed-loop control for accurate positioning. The drive incorporates a range of communication options, often including a standard fieldbus interface like PROFIBUS-DP or PROFINET, allowing for seamless integration into modern automated systems. The robust design of the EMG ID43.03 ensures reliable operation in industrial environments characterized by electrical noise, vibration, and fluctuating temperatures, making it a cornerstone for automation in sectors like metal forming, packaging, and material handling.

ID43.03 EMG
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | ID43.03 |
| Manufacturer | EMG (Elektro-Maschinenbau GmbH) |
| Product Type | Single-Axis Servo Drive / Digital Servo Amplifier |
| Output Current | Approximately 43 A RMS (Continuous) |
| Output Power | Typically in the 30-40 kW range (dependent on supply voltage) |
| Supply Voltage | 3-phase, 380 – 480 V AC, 50/60 Hz |
| Control Technology | IGBT-based PWM inverter |
| Control Modes | Position, Velocity, Torque |
| Feedback Interfaces | Supports encoders (e.g., EnDat, Hiperface), resolvers |
| Communication Interface | Typically PROFIBUS-DP or other fieldbus (model-specific) |
| Digital I/O | Multiple programmable digital inputs and outputs |
| Heat Dissipation | Forced air cooling via internal fan |
| Protection Class | IP20 (requires installation in a protected control cabinet) |
| Operating Temperature | 0°C to 45°C (with derating above 40°C) |
Main Features and Advantages
The EMG ID43.03 delivers a suite of advanced features that provide significant operational advantages. A key feature is its high dynamic response, enabled by a high switching frequency and advanced control algorithms. This allows the drive to precisely follow complex motion trajectories and react almost instantaneously to load changes, which is critical for applications like synchronization in printing presses or high-speed pick-and-place robots. The drive supports multiple control modes (position, speed, torque), which can be changed on-the-fly, offering immense flexibility to machine designers for implementing complex automation sequences.
The integration of a standard fieldbus interface, such as PROFIBUS-DP, is a major advantage for the EMG ID43.03. This allows for centralized control and real-time parameterization from a master PLC, simplifying wiring and providing extensive diagnostic data for predictive maintenance. The drive includes comprehensive safety functions, typically including safe torque off (STO) as a standard feature, ensuring safe operation and compliance with machinery safety standards. The robust construction and high-quality components used in the EMG ID43.03 ensure a long service life and high overload capacity, allowing it to handle peak demands that occur during acceleration or sudden stops, thereby maximizing machine throughput and reliability.
Application Field
The EMG ID43.03 is deployed in a wide range of industrial applications that demand high power and precision motion control. In the metals industry, it is a preferred choice for controlling the main drives in rolling mills, where it manages the immense forces required to shape metal while maintaining precise speed synchronization between stands. It is also used in bending presses, wire drawing machines, and cut-to-length lines. In heavy-duty packaging and converting machinery, the EMG ID43.03 drives the central axes of large printing presses, laminators, and slitter-rewinders, ensuring perfect register control and tension management at high production speeds.
For material handling, this drive is ideal for controlling the hoisting and trolley movements of large industrial cranes and automated storage/retrieval systems (AS/RS), where smooth acceleration and precise positioning are critical for safety and efficiency. In the test and simulation sector, the EMG ID43.03 is used to power dynamometers and test rigs that require precise torque and speed control. Its power and robustness also make it suitable for large-scale automation in the automotive industry, such as controlling body-in-white welding lines and heavy part transfer systems.

ID43.03 EMG
Related Products
ID31.03: A lower-current servo drive from the same EMG ID series, suitable for smaller motors.
ID61.03: A higher-current servo drive for applications requiring more power than the ID43.03 can provide.
EMG SERVOOST 3.x: The parameterization and diagnostics software used to set up and monitor the ID43.03 drive.
EMG AC Synchronous Servo Motors: The matching motors (e.g., AK Series) designed to work optimally with the ID43.03 drive.
EMG SVP 43.03: A possible variant or power supply module designed to work with the drive.
SIEMENS SIMATIC S7-1500 PLC: An example of a master controller that would communicate with the ID43.03 via PROFIBUS or PROFINET.






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