Siemens
Desigo Touch and Web
Building Technologies
Compatibility & limitations
2.6
Grounding as per PELV
Grounding as per
T
Safety transformer AC 230 V / AC 24 V as per EN 61 558
K
Terminal block to star
N1
PXG3.W100
N2
PXM40/50
F1
Extra
depending on line cross
Desigo Touch and Web
Compatibility & limitations – Touch panel wiring
Touch panel wiring
Reset
USB 2.0 ports (1 standard, 1 micro)
Serial ports (15-pin DIN sub)
RJ45 LAN connection
24 V AC/DC terminal strip
3
rd
terminal is not connected.
Earth connection (bolted)
Use may vary as per local rules and/or conventions
Grounding as per PELV
Reference point for ground
When grounding the reference
point (system neutral or symbol
^
), note the following:
·
As a rule, both grounding
(PELV) as well as non
grounding (SELV) the refe
ence point
erating voltage is allowed.
Local laws must be adhered
to.
·
To prevent earth loops, sy
tems with
connected to ground
system at one point only,
normally the transformer u
less indicated differently..
Grounding as per SELV
Safety transformer AC 230 V / AC 24 V as per EN 61 558
Terminal block to star-like distribution of AC 24 V and
┴
PXG3.W100
PXM40/50
Extra-low voltage fuse for max. power consumption at AC 24 V,
depending on line cross-section
19 / 22
CM111029en_04
2014-08-15
USB 2.0 ports (1 standard, 1 micro)
rules and/or conventions.
Reference point for ground
When grounding the reference
point (system neutral or symbol
), note the following:
As a rule, both grounding
(PELV) as well as non-
grounding (SELV) the refer-
ence point
^
of AC 24 V op-
erating voltage is allowed.
Local laws must be adhered
To prevent earth loops, sys-
tems with
PELV must be
connected to ground
in the
system at one point only,
normally the transformer un-
less indicated differently..
low voltage fuse for max. power consumption at AC 24 V,
