MicroAmp IV-6212 Galvo Driver

High-Speed Galvo Driver for CTR 6212 – MicroAmp IV-6212: The successor to the proven MicroAmp II/III, optimized for CTR 6212 galvos—with a focus on stability, higher precision, and improved usability.

• Designed for CTR 6212 galvos
• Successor to the MicroAmp II/III – higher precision
• Balanced inputs, approx. 2 A per voltage

Overview

Super-compact high-speed driver for CTR 6212 galvos. The successor to the highly proven MicroAmp II and III is an evolutionary advancement that places particular emphasis on stability, higher precision, and improved usability. State-of-the-art circuit technology featuring oscillation damping, over-temperature protection, an optional power calculator for galvo protection, and balanced inputs and outputs for ScanFail boards. Very compact dimensions. All position-control circuit elements are powered by references, and all temperature-sensitive circuit sections are supplemented with high-precision components. Various on-board LEDs indicate the current operating status.

In contrast to the MicroAmp III, the connectors have also been replaced with industrial-grade models, resulting in increased reliability. Power supply and signal connections are now on separate sockets.

The MicroAmp IV offers adjustment options for image size, servo gain, LF damping, HF damping, offset, linearity, and axis inversion. Power supplies of up to 2 x 30 V are possible to achieve high speeds. The PID servo controller interprets the feedback signals from the position sensor in relation to the setpoint signal at the input and supplies the necessary voltages and currents to the motor to reach the desired position as quickly as possible. The fast control loop with an integrator provides excellent dynamics with rapid acceleration and deceleration ramps, which are necessary for the fastest positioning movements and the shortest step times. The damping elements ensure the shortest possible settling times.

On the driver itself, the axis movement can be inverted using jumpers. The inputs are fully balanced, allowing for ground-free control. This drastically reduces ground loops or interference. Using a two-wire connection also eliminates interference, as the noise signals cancel each other out. All of the driver’s inputs and outputs are available at the connector. The power supply is connected via a separate connector. Buffered position outputs for feedback to evaluation electronics or safety devices are also provided on the connector.

The MicroAmp IV is fairly resistant to overheating of the output stage. The integrated overheating protection shuts down the output stage if the temperature becomes too high, preventing any damage. To ensure adequate cooling, the MicroAmp should be mounted on a metal surface of sufficient size. The temperature at the rear of the heat sink should remain below 70°C.

Technical Specifications:

Mounting the MicroAmps

The MicroAmp IV can be mounted on any metal surface or heat sink using two mounting holes on the mounting bracket to dissipate heat from the power amplifiers.