Notes On Operation; Inrush Current; Parallel Connection (On The Output Side); Short-Circuit And Overload Behavior - WAGO Eco 2 Series Product Manual

Notes on Operation

Notes on Operation 8

8.1 Inrush Current

If several products are connected in parallel and supplied on the input side using the
same circuit, higher inrush currents can result. In this case, the use of auxiliary relays,
which cause a time delay in startup, is recommended.
The maximum number of products that can be switched on at the same time depends,
among other things, on the backup fuse used and the impedance of the supply network.

8.2 Parallel Connection (on the Output Side)

In parallel operation, set the output voltage of the products that will be connected in paral-
lel to precisely the same value, if possible. The resistance of the conductors between the
power supply units and the load must be nearly identical. Only connect products of the
same type in parallel.
Use external rail-mount terminal blocks when connecting in parallel. A parallel connection
directly on the connectors on the secondary side of the product is not allowed.
To decouple the outputs in parallel mode, a suitable redundancy module or diodes in the
positive path are recommended. These diodes must be designed for the product's maxi-
mum output current.

8.3 Short-Circuit and Overload Behavior

The product's output is electronically protected against overload and short circuits.
The following values apply to the description below:
• I
OUT
• I
OUT(IST)
• U
OUT
The output voltage U
I
OUT(IST)
In the event of a short circuit (1.4 × I
The product checks whether the short circuit is still present through cyclical re-activation
of the output voltage (Hiccup mode, see also
After eliminating the overload or short circuit, the product automatically supplies the out-
put voltage as indicated.
30 Product manual | Version: 1.0.0
Power Supply Eco 2
Nominal output current (see
Actual output current
Output voltage (see 8 Technical data
is reduced at an output current I
OUT
< 1.35 × I (see Figure
OUT
8 Technical data [} 14])
[} 14])
OUT(IST)
8 Output Characteristics
< I ) the output voltage U
OUT OUT(IST)
8 Output [} 16]).
2687-2142
in the range 1.05 × I
OUT
[} 31]).
is switched off.
OUT
<