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7
Electrical connection
The fieldbus gateways MA
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
Notice!
The corresponding mating connectors and ready-made cables are available as accessories
for all cables. For further information, see chapter 14 "Type overview and accessories".
Figure 7.1:
7.1
Safety notices for the electrical connection
Attention!
Before connecting the device please ensure that the supply voltage matches the value print-
ed on the nameplate.
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
guaranteed when the functional earth is connected properly.
If faults cannot be corrected, the device should be removed from operation and protected
against possible commissioning.
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 safety class III for supply by PELV
(protective extra-low voltage with reliable disconnection).
Notice!
Protection class IP65 is achieved only if the connectors and caps are screwed into place!
Leuze electronic
2xxi
are connected using variously coded M12 connectors.
2xxi
device type.
Location of the electrical connections
MA
258i
Electrical connection
35
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