750 XTR Series
Planning
System manual | Version: 2.0.0
45
Figure 23: Ex i XTR Power Supply Concept
No.
Explanation
1
XTR head station
2
XTR I/O modules
3
XTR “Power Supply 24 VDC Diagn for Ex i XTR Modules”
(750-606/040-000)
4
Ex i XTR I/O module
5
XTR end module (750-600/040-000)
U
F1
Field supply 1 (24 VDC)
U
S
System supply (24 VDC)
U
F2
Field supply 2 (24 VDC)
Clearance and Creepage Distance Requirements
• For all sections of a node that contain I/O modules for Ex i use, stricter requirements
apply with regard to clearances and creepage distances.
– Before such a node section, the respective supply module (item no.
ü
)ensures the required distance.
– After such a node section, four XTR distance modules (item no.:
ü
) must be used. Exception: If the following section consists of
only one XTR end module (item no.:
ü
are required.
