Installation - Siemens RWD44U Installation And Commissioning Manual

RWD44U Controller Installation and Commissioning Guide

Installation

Mounting Notes
Electrical Installation
Notes
Siemens Industry, Inc.
The RWD44U can be mounted as follows:
Observe all local installation and mounting regulations.
A On a DIN rail (EN 50 022-35 × 7.5) at least 4.75 inches (120 mm) long for
RWD44U.
B Wall-mounted with two screws. (Minimum length of the screws should be
2.75 inches (70 mm) (φ3.2 mm)
C Front-mounted using standard elements:
• One DIN rail 5.90 inches (150 mm) long for RWD44U
• 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 (single RWD44U).
WARNING:
There must be a minimum of 0.31 inches (8 mm) distance from
terminations to panel/enclosures to avoid electric shock.
•
Standard cables can be used for the controller. However, when mounting in an
environment greatly exposed to EMI, use only shielded cables.
•
The RWD44U is designed for 24 Vac operating voltage.
•
Low voltage must comply with the requirements for safety extra-low voltage
(SELV) as per EN 60730.
•
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 42 Vac endanger personal safety.
Figure 7. Mounting Options.
Document Number 129-408
October 5, 2009
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