LSP Presents 2nd Generation FP Power Supplies

By Brian Rhodes, Published Apr 29, 2020, 01:08pm EDT (Info+)

Life Safety Power (LSP) presented its FP2 power supply in the April 2020 IPVM New Products show.

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Key *********

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Comments (1)

For years i have used Altronix power supplies for our access control solutions. Over the past 5 years or so we have been exclusively using LSP for all our access control enclosures/power supply requirements. I have grown to prefer LSP over Altronix on every factor except for their fire alarm release. If you are using a dry contact c/nc (open on alarm) for your fire alarm input (common in my area), the LSP setup can be mistakenly bypassed if your unaware of how it behaves. There is no clear indication of when the units fire alarm input is in a normal state (monitoring for FA activation) or when the FA terminal block is in unplugged or one of the V+ V- terminals is not terminated correctly.

As a work around we have been using a separate terminal block to facilitate the internal FA power supply connections on one side of the block and the FA field wiring on the other side of the block so a tech can do a quick test by pulling the field cabling side off of the terminal block without touching the terminations for the V+V- terminals and be confident that it is operational after such a test. I don't like using a terminal block in between to facilitate this connection but using as I see it as the lesser of two evils.

Below is the text from their manual about the FAI configuration I am referencing.

Activation with a Normally Closed Relay Contact

FAI Activates when the NC contact OPENS .FAI Deactivates when the NC contact CLOSES .Note: FAI with a NC contact cannot be tested by removing the terminal strip, as this will remove the jumper wires from V+ and V- as well. To test, remove one wire going to the NC Contact.

I am hoping this newer supply gives a better indication of when the power supply is detecting if it's configured to monitor for FA activation, show when it's in alarm (already does this) and show when it is missing/mis-wired the fire alarm input.

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