Siemens SM 332 Información Del Producto página 11

English A5E50802064-AA
Figure 1-2 Inserting the load voltage connection cables into the line chamber..Outer diameter of the cables > 2 mm (view from below)
It can also happen that the minimum thread length is not adhered to between the different modules
(e.g. in mixed use of explosion-proof and standard modules). If the minimum thread length between
conducting parts of explosion-proof and standard modules is less than 50 mm, the following options
are available to you for adhering to the thread length between the modules:
1. Use the Ex isolating bar (6ES7 195-1KA00-0XA0) in connection with bus modules with an active
backplane bus.
2. If you do not use a bus module with an active backplane bus, you can also use the dummy module
DM 370 (6ES7 370-0AA01-0AA0).
• In wiring the submodule, you must strictly separate the intrinsically safe lines from the non-intrinsically
safe. They must be laid in separate cable ducts.
• The analog module must be operated with safe functional extra-low voltage. This means that these
modules may be subject to a voltage of no more than Um ≤ 60 V (DC) or 30 V (AC), even in the
event of an error.
All sources of voltage (e.g. internal 24 V DC load power supplies, external 24 V DC load power
supplies, 5 V DC bus voltage) must be connected with each other electrically in such a way that, even
if there are differences in potential, no voltage addition occurs at the different voltage sources and the
error voltage Um is not exceeded.
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