6EP1311-1SH13 View Datasheet(PDF) - Siemens AG

Part Name

Description

Manufacturer

6EP1311-1SH13

Power supply LOGO!Power

Siemens AG 

Applications

5.3 Series connection for increased voltage

5.3

Series connection for increased voltage

To achieve a higher output voltage, two LOGO!Power power supplies of the same type can

be connected in series. In this case, connect the "-" terminal of the first power supply to the

"+" terminal of the second power supply. The "+" terminal of the first power supply and the "-"

terminal of the second power supply are routed to the load.

Depending on grounding point of the secondary output voltage, voltages of +2×UA, ±UA or -

2×UAcan be implemented.

In the case of asymmetric load distribution, it is not possible to ensure correct functionality.

WARNING

When two power supplies are connected in series, it is not possible to ensure the

permanently permissible SELV voltage of maximum of 60 V DC acc. to EN 60950 in the

event of a fault.

Figure 5-3 Series connection

5.4

Protection against short-time voltage dips

During a drop in the primary-side supply voltage, the LOGO!Power power supplies still

maintain the output voltage over a short millisecond period (see section Technical data, Input

(Page 23)).

LOGO!Power

Operating Instructions, 02.2011, C98130-A7560-A999-1-7619

21

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