Safety Advice (Precautions) - WAGO 750 Series Manual

14 Important Notes
2.2

Safety Advice (Precautions)

For installing and operating purposes of the relevant device to your system the
following safety precautions shall be observed:
Do not work on devices while energized!
All power sources to the device shall be switched off prior to performing any
installation, repair or maintenance work.
Dangerous voltages – follow assembly sequence!
If there is a fault, dangerous voltages may be present on the DALI bus. The DALI
Multi-Master Module must not be placed directly to the left of an I/O module that
works with SELV and has power jumper contacts (e.g., Supply Module 750-624).
Otherwise, safe disconnect cannot be ensured. If necessary, put a spacer
module (Item No. 750-616) between the DALI Multi-Master Module and such an
I/O module to ensure safe disconnection.
Install the device only in appropriate housings, cabinets or in electrical
operation rooms!
The WAGO-I/O-SYSTEM 750 and its components are an open system. As such,
install the system and its components exclusively in appropriate housings,
cabinets or in electrical operation rooms. Allow access to such equipment and
fixtures to authorized, qualified staff only by means of specific keys or tools.
Dangerous voltages – restrict access
Since the DALI bus is only isolated from power supply with basic insulation, it
cannot be ruled out that dangerous voltages are present on the DALI bus in the
event of a fault. In accordance with EN 61010-2-201, this communication
interface must be restricted as inaccessible.
Ensure a standard connection!
To minimize any hazardous situations resulting in personal injury or to avoid
failures in your system, the data and power supply lines shall be installed
according to standards, with careful attention given to ensuring the correct
terminal assignment. Always adhere to the EMC directives applicable to your
application.
Manual
Version 1.4.3
WAGO-I/O-SYSTEM 750
753-647 DALI Multi-Master