Siemens CP 243-2 - Manual (Page 10)

Technical Description and Installation Instructions
1-2
SIMATIC NET CP 243-2 AS-i Master
C79000-G8976-C142/02
1.1 General Notes on Operation – Safety Warnings
!
Caution
When handling and installing the CP 243-2, make sure that you keep to the ESD
guidelines.
The CP 243-2 must only be connected when the AS-i power supply unit is turned
off.
!
Caution
Noise immunity/grounding
To ensure the noise immunity of the CP 243-2, the CP 243-2 and the AS-i power
supply unit must be correctly grounded.
!
Caution
The AS-i power supply unit used must provide a low voltage, safely isolated from
the network. This safe isolation can be implemented according to the following
requirements:
S
VDE 0100 Part 410 = HD 384-4-4 = IEC 364-4-41
(as functional extra-low voltage with safe isolation) or
S VDE 0805 = EN60950 = IEC 950
(as safety extra-low voltage SELV) or
S
VDE 0106 Part 101