25
CP 343−2 / CP 343−2 P AS−Interface Master
Release 08/2008
C79000−G8976−C149−04
2
Installation and Commissioning
This chapter explains how to install and commission the module.
2.1
Safety Warnings
!
Warning
When used under hazardous conditions (zone 2), the devices must be installed in
an enclosure.
To comply with ATEX95 (EN 60079-15), this enclosure must meet the
requirements of at least IP54 in compliance with EN 60529.
WARNING − EXPLOSION HAZARD: DO NOT DISCONNECT EQUIPMENT
WHEN A FLAMMABLE OR COMBUSTIBLE ATMOSPHERE IS PRESENT.
!
Warning
S
”WARNING” − Explosion Hazard − Do not disconnect while circuit is live unless
area is known to be non-hazardous.
S
”WARNING” − Explosion Hazard − Substitution of components may impair
suitability for Class I, Division 2 or Zone 2.
S
”This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D;
Class I, Zone 2, Group IIC or non-hazardous locations.
!
Warning
The device is designed for operation with safety extra-low voltage (SELV). This
means that only safety extra-low voltages (SELV) complying with
IEC950/EN60950/ VDE0805 may be connected to the power supply terminals.
The power unit for supplying the device must comply with NEC Class 2 as descri-
bed by the National Electrical Code(r) (ANSI/NFPA 70).
The power of all connected power units in total must correspond to a limited power
source (LPS).
If the cable to the external power unit is very long and liable to energy spikes, con-
nect a surge protection element.
!
Caution
Please keep to the ESD guidelines when installing and operating the CP.
Connect the CP only when the power supply is turned off.