Siemens 6ES7138-7EC00-0AA0 Product Information page 9

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Wiring the TM-PS-A UC/TM-PS-B UC terminal submodule
• When laying the cable and connecting the submodule,
observe the regulations in EN 60 079-14 plus any
applicable national regulations.
• In wiring the submodule, you must strictly separate the
intrinsically safe lines from the non-intrinsically safe.
Intrinsically safe and non-intrinsically safe lines may not be
laid together in a single cable duct.
• Connect the AC 120/230V power supply (terminal L1/N) to
the TM-PS-A UC/TM-PS-B UC terminal module. You must
connect the potential equalization wire (in accord with
EN 60 079-14) to the terminal PA.
The comprehensive terminal assignment can be found in
the ET 200iSP Distributed I/O operating instructions.
Danger
Zone 1 and safety zone: the separation or termination of
supply voltage wires of the PS AC120/230V power supply
on the TM-PS-A US/TM-PS-B UC terminal submodules
may only be carried out when the supply voltage has been
switched off in zone 1 / 2 and the safety zone.
Assembly
• Check the power supply for any damage! Only connect a
power supply to the TM-PS terminal module if you are
certain that the power supply is undamaged.
• In Zone 1 and Zone 2, the power supply submodules may
be inserted and removed during operation. The enclosure
(Ex e / IP 54) in which the ET 200iSP is found may only be
opened briefly for this purpose (see the ET200iSP
operating instructions).
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