BECKHOFF DK9222-0610-0027 User Manual

BECKHOFF Equipment

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I/O

Motion

Application Note DK9222-0610-0027

Keywords
Buffer capacitor
Brake chopper
Fieldbus
Drive
Stepper
DC motor
Output stage
DC link
Overload
Recovery
EtherCAT
K-Bus
Bus Terminal
PLC

Overvoltage protection and voltage stabilization for
Motion Control terminals

This application example describes how Motion Control applications with the output stages for servo, DC
and stepper motors by Beckhoff are optimized by the utilization of buffer capacitors. The buffer capacitor
terminals EL9570 for EtherCAT and KL9570 for K-Bus stabilize the voltage supply by absorbing the fed back
energy and dumping the energy that the buffer capacitor cannot protect against into an external braking
resistor. The buffer capacitor terminal protects the DC power supply and other motor terminals that may
be sharing the same DC power source. The buffer capacitor terminal extends the area of application for
Beckhoff Motion Control terminals to also include applications with short start/stop ramp times and large
inertia. Additional installation space in control cabinets is saved due to the solution’s compact design as a
double-sized standard terminal block.

Electrical drives

Variable-speed electrical drives are used in practically all industrial sectors. They are preferred for the following reasons:
– Good system efficiency
– Good or very good static and dynamic control characteristics
– Communication with higher-level controllers is possible
– Market prices are in line with user expectations.

Electrical drives are also influenced by the control electronics. New servo drives make complete solutions that are compact
and energy-saving possible. These exhibit dynamic control behavior, good torque stability, and control capability down to zero
speed.

New Automation Technology

Beckhoff

1

For application notes see disclaimer on the last page

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