FOUNDATION Fieldbus surge protection!

Field Network Q&A

Is it a must to have a surge protector in the FOUNDATION Fieldbus junction box or just a recommendation? Is it mentioned in IEC or any other standards?

Expert’s answer: Do you really need FOUNDATION Fieldbus surge protection?

So, you want to know if FOUNDATION Fieldbus surge protection is a must or recommendation?

Let me ask you this:

How many people know what surge protection actually means? Show of hands. Oh wait, I can’t see you. Okay, never mind. Basically, surge protection keeps “transient over-voltages,” AKA stray electricity, in your system from frying your devices.

Now in a FOUNDATION Fieldbus network, the surge protector, like a tiny paladin, will shield your network and components against induced voltage, lightning strikes, and other charged situations.

So the protector consists of a low-capacitance device installed at the electrical connection. Usually, it’s an open circuit on the spur and segment, so it shouldn’t drop the signal much. You should add protectors to your field devices and host H1 interface but not with current-limiting couplers.

Courtesy of Phoenix Contact

Other resources that might interest you

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FOUNDATION Fieldbus troubleshooting!
What to do when you have problems with network stability for a FOUNDATION Fieldbus network?

Field network verification for FOUNDATION Fieldbus
How can you check the quality of the signal of our FF network by yourself?

Related tags: Field Network Fieldbus Fieldbus FOUNDATION Foundation Fieldbus MTL Pepperl+Fuchs Phoenix Contact Surge Protection Surge protector
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