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Siemens Desigo Desigo Room automation - Engineering, mounting and installation CM111043en_14
Smart Infrastructure Wiring of power lines 2020-10-30
6 Wiring of power lines
This section describes the wiring between the transformer and power point(s)
(Room automation station, power supply module, bus connection module).
Detailed information on wiring for AC24V and island bus is available in the TX-I/O
engineering and installation guide CM110562 [8].
6.1 Supplemental notes on safety
Before starting the wiring, please comply with "Important information on safety" in
Section 3. The following notes are closely related to Section 3.2 “Device-specific
regulations“and must be observed accordingly.
Wire the devices in the standard manner in the cable ducts.
Recommendation: Design the duct cross-section with at least 30% in reserve.
Use wiring types and diameters as per the specifications below:
Cabling Use standard stranded cable and wiring. The ends can be connected directly or
strengthen with conductor sleeves or pin connectors.
.Important: If low-voltage wiring runs alongside mains voltage, it must
have the same level of insulation as wiring for mains voltage.
Device connection
terminals
The device connection terminals are designed for wiring for:
· min. 0.5 mm Æ / AWG24.
· max. 2 x 1.5 mm
2
/ AWG16 or 1 x 2.5 mm
2
/ AWG13
Connection terminals are lifting clams; the contact plate between the wire end
and screw end is easy on the wiring.
.Important: Only the original pluggable connection terminals may be
used as the connection facility.
Tightening torque Set the torque to 0.5-0.6 Nm or 50-60 Ncm (4.4...5.3 in*lbf) when using electrical
screwdriver on the connection terminals.
Note
Safety notes
Cabling,
duct cross
-
section
Wiring and connection
terminals