WAGO 2787-2144, Product Manual

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2787-2144 Notes on Operation
58 Product manual | Version: 1.0.0
Power Supply Pro 2
• Buttons
• Digital input
In combination with the
8
“Constant Current” mode [
}
55] , the “Power Boost” mode is
activated again after each pause.
t
>5s
15s 15s
>150%
>110%
100%
20s
>5s
20s
I
OUT
/ I
N
Figure 40: “Power Boost” Mode in Combination with “Constant Current” Mode
10.5.7 “Top Boost” Mode
In this mode, a current pulse of up to 600 % is output for up to 15 ms if the current output
current exceeds the nominal output current by a significant amount. This overcurrent can
be caused by a short circuit or a large overload in the secondary circuit, for example.
In some cases, the current pulse can trip an overcurrent protection device that is present
in the connected circuit, such as a circuit breaker. This quickly ends the short circuit or
high overload.
In selecting an appropriate overcurrent protection device, it is essential to pay attention to
the following technical data to ensure reliable tripping:
• Trip characteristics
• Nominal value
• Safety factor for DC tripping
In addition, calculate the error loop impedance. The maximum current that can flow
through the error loop (due to the impedance) must not be lower than trip current of the
overcurrent protection device necessary to reliably trip it.