WAGO-I/O-SYSTEM 750
Connect Devices 39
750-439 8DI NAMUR Ex i
Manual
Version 1.3.0, valid from HW Version 03, SW Version 03
6.2
Power Supply Concept
Ex i I/O modules shall only be supplied via Ex i 24 VDC power supply
module!
Ex i I/O modules shall only be operated with an Ex i 24 VDC power supply
module.
Requirements for Clearances and Creepage Distances
For all sections of a node that contain I/O modules for Ex-i use, stricter require-
ments with regard to clearances and creepage distances apply.
•
Before such a node section, the respective
Ex i supply module
(
750-606
or
750-625/000-001
) ensures the required distance.
•
After such a node section,
4 distance modules (750-616)
must be used.
Exceptions: If the following section consists of:
•
an
end module for internal bus extension (750-627)
,
1 distance
module (750-616)
is sufficient;
•
an
end module (750-600)
, no distance modules are required.
Do not exceed maximum current via power contacts!
The maximum current available from the Supply Module Ex i (750-606 or 750-
625/000-001) is 1 A.
When configuring the system, ensure that this current is not exceeded.
If exceeded, an additional potential feed module must be used.
Keep the air and creep distances between intrinsically safe segments!
The maximum current available from the 750-606 or 750-625/000-001 Ex-i
Supply Module is 1 A.
If the use of further 24 VDC Ex i Supply modules is necessary for reasons of
extent of utilization, four Separation Modules (750-616) must be used to
guarantee the distance between the intrinsically safe segments.
Further information about explosion prevention!
Further information about explosion prevention can be found in section “Use in
Hazardous Environments”!
