Overload Factor; Overtemperature And Continuous Power At 100% Duty Cycle - Beckhoff AX2090-BW5 Series Documentation

5.5.2

Overload factor

Calculation formula
Short-term capacity = continuous power x overload factor
5.6 Overtemperature and continuous power at 100% duty
cycle
If your application requires a higher continuous power than the specified nominal capacity, you can accept
this state if a higher brake resistor temperature is permitted. The following diagram shows the
overtemperature v. the continuous power.
Normal operating range,
max. 130%
This operating range is recommended for
maximum service life and error-free opera-
tion.
Destruction of the brake resistor and adjacent components
Always ensure adequate ventilation of the brake resistor, since the temperatures of the
housing surface may exceed 200 °C.
Attention
External brake resistor AX2090-BW5x
Permitted operating range,
max. 160%
This operating range is still permitted, al-
though it results in shorter service life with
higher failure probability
Version: 1.3
Electrical installation
Inadmissible operating range,
more than 160%
In this operating range there is a risk of de-
struction of the brake resistor through over-
heating. Due to the high temperatures the
adjacent components are also at risk.
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