750 XTR Series
Planning
System manual | Version: 2.0.0
43
5.5 Special Applications and Environments
5.5.1 Marine, On-/Offshore, Substation Instrumentation and Control, Telecontrol
Technology, Railway Engineering
The I/O System 750 XTR can also be used in shipbuilding applications and onshore/off-
shore installations (e.g., platforms, loading facilities), as well as in telecontrol applications.
This is demonstrated by compliance with the requirements of leading classification agen-
cies such as DNV and Lloyd’s Register.
As a general rule, for standards-compliant use in substation instrumentation and control,
telecontrol technology, railway engineering or shipbuilding-certified operation, filters mod-
ules (surge) (item no.:
ü
or
ü
) or supply filters (item
no.:
ü
) should be used.
The following power supply requirements must be observed:
• The 24 V system power supply of the head station must be filtered and protected
against overvoltage.
• Therefore, the power must be supplied through the supply filter (item no.:
ü
). The system supply must always be connected via a 2 A time-
delay fuse.
• The 24 V field power supply systems must be protected against overvoltage. There-
fore, the power must be supplied via filter modules (surge)
(item no.:
ü
ü
) or
supply filters (item no.:
ü
Figure 22: Power Supply Concept
No.
Explanation
1
XTR fieldbus coupler/controller
2
Supply filter; 24 VDC; higher isolation; extreme (item no.:750-626/040-000)
3
XTR I/O modules
4
Field supply filter (surge); 24 VDC; higher isolation; without power jumper contacts; extreme
(item no.: 750-624/040-001)