Special Safety Notes On Brake Resistors - Beckhoff AX8000 System Manual

Accessories
12.1.3

Special safety notes on brake resistors

The responsible staff must ensure that the application or use of the products described satisfy all the
requirements for safety, including all the relevant laws, regulations and guidelines.
Danger to life due to high voltage on the DC link capacitors!
The DC link capacitors RB+ and RB- and the test contacts DC+ and DC- on the
supply, axis and option modules can carry life-threatening voltages of
DANGER
≥ 875 V .
DC
Take the following measures to avert danger:
• After disconnecting the servo drive from the mains supply, wait until the voltage has
fallen below 50 V
• Measure the voltage on the test contacts properly.
• Secure the work area properly and wear the PPE.
Caution - Risk of injury through hot surfaces!
The temperature of the brake resistor housing surface may reach over 200 °C. Please en-
sure that the housing has cooled down below 40 °C before touching it.
WARNING
UL- recognized component
The brake resistors from the AX2090-BW80 series are certified according to applicable UL
and CSA safety requirements. They may therefore be used in products, plants or systems
bearing the UL-Listing test mark.
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. Only then is it safe to work.
DC
Version: 1.0 AX8000 - system manual