2787-2146 (/0000-00x0)
Notes on Operation
64
Product manual | Version: 1.2.2
Power Supply Pro 2
11.4.2 Derating (Location-Dependent)
Depending on the installation altitude and the surrounding air temperature, it may be nec-
essary to reduce the load.
Table 68: Derating (Location-Dependent)
Temperature Value
Derating
T
U
> +50 °C
−13.0 %/1000 m (> +50 °C; 4000 m or higher)
T
U
> +55 °C
−13.0 %/1000 m (> +55 °C; 2100 m or higher)
0
2,5
5
7,5
10
0
1000
2000
3000
4000
5000
I
OUT
[A]
Altitude [m]
Tamb = 40°C
Tamb = 50°C
Tamb = 55°C
Figure 38: Derating (Location-Dependent)
11.5 Parallel Connection
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.
For decoupling the outputs in parallel mode, use of diodes in the positive path is recom-
mended. These diodes must be designed for the product’s maximum output current.
For active load distribution, the “Active Droop” setting is enabled by default. This reduces
the output voltage in the event of a load (by 300 mV from 0 A up to the nominal current).
This smooth characteristic curve ensures better current sharing for parallel operation of
power supplies. This setting can be enabled in the Dialog: Settings dialog in the “DC Out-
put” section of the WAGO Interface Configuration software.
11.6 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:
• U
OUT
: output voltage
