Serie 750, 753
Planning
34
System manual | Version: 3.0.2
4.5 Special Applications and Environments
4.5.1 Marine and Offshore
The node structure must meet additional requirements to qualify for certified marine appli-
cation.
If these requirements are specific to an I/O module, they are described in the respective
&
Product Manual
. Otherwise, the following general requirements for marine applica-
tions apply.
A filter module must be used for each system and field supply input point with a nominal
voltage of 24 VDC:
• Use a power supply filter (750-626/xxx-xxx) for the system supply.
• Use a field supply filter (750-624/xxx-xxx) or a power supply filter (750-626/xxx-xxx) for
the field supply.
No additional filter module is required for the field supply with a nominal value of 230 V.
Marine Applications acc. DNV GL
• Class A: All areas except bridge and open deck
• Class B: All areas including bridge and open deck
Applications with Isolation Monitoring
High-isolation (HI) versions of the filter modules are required for application areas with
isolation monitoring.
Table 9: High-Isolation Filter Modules
High-Isolation Filter Modules
Field-side power supply filters
Filter module, 24 VDC, HI (750-624/020-000)
Filter module, 24 VDC, HI, no power jumper contacts (750-624/020-001)
Filter module, 24 VDC, HI, with ground fault diagnostics (750-624/020-002)
Filter module
Filter module, 24 VDC, HI (750-626/020-000)
Filter module, 24 VDC, HI, with ground fault diagnostics (750-626/020-002)
Filter module, 24 VDC, HI/T (750-626/025-001)
