Kollmorgen SERVOSTAR-CD servo drive hardware installation and system configuration

Kollmorgen SERVOSTAR-CD servo drive hardware installation and system configuration

1. Product Overview and Safety Standards

Danaher Motion's SERVOSTAR ®  Since its launch in 1997, the CD series digital servo motor driver has become a mature solution in the field of industrial motion control. This series is divided into the early CD Series 2 (model number 5 is 2, such as CR06250) and the more powerful CD Series 5 (model number 5 is 5, such as CR06550). Series 5 is backward compatible with Series 2 in terms of hardware and functionality, and integrates more advanced digital signal processor (DSP) control technology, additional I/O, and a lower cost rotary transformer conversion solution, making it the preferred choice for new applications.

Safety is the primary prerequisite for installation and operation. This equipment is only allowed to be transported, assembled, debugged, and maintained by qualified personnel. Operators must be familiar with the installation and commissioning standards of motors and related equipment (such as IEC 364, DIN VDE 0100), and strictly comply with safety regulations. The equipment contains electrostatic sensitive components, which require electrostatic discharge before operation and avoid contact with high insulation materials. When powered on, do not plug or unplug the connector. After power off, wait for at least 10 minutes to ensure that the capacitor is fully discharged. If necessary, use an electric meter to measure and confirm.

The equipment has passed UL/cUL 508C certification (applicable to the US and Canadian markets) and meets the CE marking requirements of the European Union, including the Machinery Directive (89/392/EEC), Electromagnetic Compatibility Directive (89/336/EEC), and Low Voltage Directive (73/23/EEC). To ensure that the entire system complies with EMC standards, the machine manufacturer is responsible for the EMC compliance of the final system and strictly follows the installation recommendations in this document, especially the guidance on shielding, grounding, filter layout, and cable laying.

2. Hardware installation and environmental requirements

SERVOSTAR-CD drivers are designed for panel installation and should be placed in metal cabinets to ensure appropriate protection levels (such as IP30) and electromagnetic compatibility. Attention should be paid during installation:

Vertical installation for better heat dissipation.

Ensuring metal to metal contact between the driver's metal casing and backplate is crucial for controlling electrical noise, optimizing grounding, and EMC performance.

The installation backplate should be an unpainted metal surface to provide optimal electrical bonding and low impedance grounding path.

Adequate clearance distance should be maintained laterally and at the top/bottom (such as approximately 0.5 inches for lateral 16/14 AWG cables) to ensure heat dissipation and safety.

The hardware specifications vary depending on the model (Cx03, Cx06, Cx10), including weight, installation torque, connection screw specifications, and recommended wire diameters (such as 16 AWG/1.5 mm ² for control logic wires and 14 AWG/2.5 mm ² for motor power wires).

3. System wiring, grounding, and shielding technology

Proper wiring, grounding, and shielding are crucial for the long-term stable operation of the system and compliance with EMC standards.

3.1 General Wiring Principles

Separation of strong and weak electricity: Control and signal cables should be laid separately from power and motor cables, with a recommended minimum spacing of 20 centimeters. If crossing is necessary, it should be done at a 90 ° angle to minimize coupling interference.

Use shielded cables: All control and signal cables should be shielded to reduce radiated interference.

Cable laying: Power lines should be placed as close as possible to the backplane to allow for capacitive coupling of noise and current to the grounding plane. When the motor cable and feedback cable exit the cabinet, they should be separated as much as possible, ideally using separate metal tubes.

3.2 Grounding System

The system grounding needs to achieve two goals: safe grounding and high-frequency grounding.

Safe grounding: All system component frameworks must be connected to the ground through a star shaped grounding point.

High frequency grounding: provides an extremely low impedance grounding path for filters, drivers, and power supplies. Do not use ordinary wires as high-frequency grounding, as their inherent inductance will generate impedance at high frequencies. Flat braided tape or copper bars should be used and the length should be shortened as much as possible. The backplane needs to be connected to the cabinet frame and ground through a high-frequency grounding strip.

3.3 Shielded cable overlap

All shielding layers of shielded cables (motors, feedback cables) must be overlapped near the driver end to reduce the impedance between the shielding layer and the backplane, thereby suppressing noise emission and improving immunity.

Method 1: Use non insulated metal cable clamps to directly clamp the exposed shielding layer onto the backplate.