Document Number 129-409
RWD45U Controller Installation and Commissioning Guide
October 5, 2009
Page
12 of 13
Siemens Industry, Inc.
Installation
Mounting Notes
Figure 7. Mounting Options.
The RWD45U can be mounted as follows:
Observe all local installation and mounting regulations.
A
On a DIN rail (EN 50 022-35 x 7.5) at least 4.75 inches (120 mm) long for
RWD45U.
B
Wall-mounted with two screws. (Minimum length of the screws should be
2.75 inches (70 mm) (
φ
3.2 mm).
C
Front-mounted using standard elements:
•
One DIN rail 5.90 inches (150 mm) long for RWD45U
•
Two hexagonal placeholders 1.96 inches (50 mm)
•
Washers
•
Screws
NOTE:
(Ensure all terminations are tightened before final mounting to front
panel.)
D
Inside the ARG62.21.
WARNING:
There must be a minimum of 0.31 inches (8 mm) distance from
terminations to panel/enclosures to avoid electric shock.
Electrical Installation
Notes
•
Standard cables can be used for the controller. However, when mounting in an
environment greatly exposed to EMI, use only shielded cables.
•
The RWD45U is designed for 24 Vac operating voltage.
•
Use safety insulating transformers with double insulation as per EN 60742; they
must be designed for 100% Duty.
•
When using several transformers in one system, the connection terminals G0
must be galvanically connected.
•
Supplying voltages above 24 Vac to low voltage connections may damage or
destroy the controller or any other connected devices. Additionally, connections
to voltages exceeding 24 Vac endanger personal safety.
