Dc Power Supply Requirements - Siemens SIMATIC EMS400S PSB-S Operating Instructions Manual

Installing and wiring PSB module
4.3 48 V DC power supply requirements
Safe operation of PSB modules
For safe operation of a PSB module, the temperature range of the cables used must be
suitable for use at the in situ temperatures to be expected.
Note
Non-compliance with valid environmental conditions at the mounting location may lead to
malfunction of the PSB module.
Observe the environmental conditions for operation when selecting the installation location.
The valid environmental conditions are specified in chapter "Operational requirements
(Page 72)".
4.3 48 V DC power supply requirements
The PSB-S module is operated on 48 V DC. Only the LOGO!Power modules of Siemens AG
with order number 6EP1332-1SH52 are approved for supplying power. These modules must
be wired in series. Additional information is available in the section "Interfaces of the
PSB-S module (Page 62)".
Note
Ground of the DC 48 V supply on the PSB-S module may not be connected to PE. When
using a shielded cable, the shielding must be connected to PE.
If the power supply consisting of the mentioned LOGO!Power power supply modules is not
sufficient for the number of required PSB-S or PSB-C modules in the respective EMS, you
can use several units of LOGO!Power power supply modules switched in series.
Electrical isolation
Note
Observe the following points:
• Always use 24 V DC power supply modules with safe electrical isolation to
IEC 60364-4-41 or HD 384.04.41 (VDE 0100, Part 410), e.g. in accordance with the
PELV standard.
• The supply voltage must be within the specified voltage range. Otherwise, function
failures on the PSB modules cannot be excluded.
For more information, refer to the "S7-1200 Automation System
(http://support.automation.siemens.com/WW/view/de/36932465/0/en)" and "EMS400S Plant
controller for Electric Monorail Systems" system manuals. The latter documentation is
available at:
EMS400S product documentation
(http://support.automation.siemens.com/WW/view/en/68156412/133300)
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Operating Instructions, 03/2014, A5E03474166-03
PSB modules