Capacitive Load; On Delay - WAGO 787-3861/200-1000 Product Manual

Functions
Output Status
Status 6

4.4 Capacitive Load

The product can be used to switch on high capacitive loads. The resulting high inrush
currents put a strain on the power supply. The power supply must be able to deliver the
maximum required power without the voltage falling below 20 VDC.
The capacity value to be reached depends on fundamental factors, such as the power
supply already mentioned, the cable length and the conductor cross-section, as well as
the properties of the load that is to be powered.
For some WAGO power supply units, possible load capacities have been determined em-
pirically (see
Note
Measures for capacitive loads without protection against reverse discharge
Faulty tripping of channels that are connected in parallel may occur on the supply side
with capacitive loads that are not protected against reverse discharge.
• In this case, WAGO recommends taking suitable measures (e.g., a diode or MOS-
FET) to decouple the capacitive load.

4.5 On Delay

As soon as a minimum input voltage is present, the channel is activated with a time de-
lay. This requires the channel to be switched on before the input voltage is switched off.
Note
Note the behavior when the input voltage is restored!
The circuit breaker channel switches to the status it had before the input voltage was
switched off. A channel that was manually switched off tripped is not automatically
switched on.
The channel is randomly activated within 0 ... 500 ms with a time delay. If multiple elec-
tronic circuit breakers are connected to one power supply, this avoids larger current
spikes at switch-on.
20 Product manual | Version: 1.0.0
Electronic Circuit Breaker
Product Behavior in the Event of
Undervoltage Overvoltage
Status 8 Status 9
8 Power Supplies [} 35]).
787-3861/200-1000
Product Behavior When Voltage Returns
to Normal
Undervoltage Overvoltage
Status 6 Status 6