Leuze electronic GmbH + Co. KG
MA 238
i
20
7
Electrical connection
The fieldbus gateways MA 2xx
i
are connected using variously coded M12 connectors.
An RS 232 device interface allows the respective devices to be connected with system connectors. The
device cables are equipped with a prefabricated PG cable gland.
Coding varies and the design is implemented as either socket or connector depending on the HOST
(fieldbus) interface and function. For the exact design, refer to the corresponding description of the
MA 2xx
i
device type.
Figure 7.1: Location of the electrical connections
7.1
Safety notices for the electrical connection
NOTE
The corresponding mating connectors and preassembled cables are available as accessories
for all connections. For further information, see chapter 14 "Type overview and accessories".
ATTENTION!
Before connecting the device, be sure that the supply voltage agrees with the value printed on
the name plate.
Connection of the device and cleaning must only be carried out by a qualified electrician.
Ensure that the functional earth (FE) is connected correctly. Unimpaired operation is only guar
-
anteed when the functional earth is connected properly.
If faults cannot be cleared, the device should be switched off and protected against accidental
use.
ATTENTION!
For UL applications, use is only permitted in Class 2 circuits in accordance with the NEC
(National Electric Code).
The fieldbus gateways are designed in accordance with protection class III for supply by PELV
(protective extra-low voltage with reliable disconnection).
NOTE
Degree of protection IP65 is achieved only if the connectors and caps are screwed into place!