Functional Safety; Power Supply Concept - WAGO 750 Series Manual

Serie 750, 753
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5.5.4 Functional Safety

5.5.4.1 Power Supply Concept

When using F I/O modules, the system and field supply must be protected against surge
voltages (burst and surge) in accordance with EN 61326-3-1.
If these requirements are specific to an I/O module, they are described in the respective
& Product
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.
System manual | Version: 3.3.1
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Figure 21: Power Supply Concept for Marine Applications in Ex i Zone – Class B
Filter module, 24 VDC, HI GF (750-626/020-002) or
filter module, 24 VDC, HI (750-626/020-000)
Filter module, 24 VDC, HI GF (750-626/020-002) or
filter module, 24 VDC, HI (750-626/020-000)
Bus supply module, 24 VDC, Ex i, with diagnostics (750-606) or
bus supply module, 24 VDC, Ex i (750-625/000-001)
Ex i I/O modules
Manual. Otherwise, the following general requirements apply.
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Planning
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