Fire Alarm End Of Line Resistor

And i also have a normally open zone with an end of line resistor.

Fire alarm end of line resistor. And for different types of input card in a system the value may be different. This is because fire sensors are normally open devices. First fire zones always use resistors even if the other zones do not. Are there any other ways in which resistors are used.

So we ve got three different examples here. What value of eol resistor should i use. It is both the duty and the responsibility of every technician engaged in the service testing and inspection of a fire alarm system to ensure that what they re doing complies with the relevant codes and standards. We have a normally closed with an end of line resistor.

It s going to be at the panel and this is how you don t want to do it. Why it is important to place them at the eol or end of line. This item simplex 4081 9008 end of line eol fire alarm resistors edwards eol 47 end of line resistor 4 7k simplex 2098 9735 fire alarm end of line relay eolr relay nib. The eol allows the.

A fire alarm system fas detects fire and warns people of the fire. Fire before getting into the importance of the end of line resistor though we have to understand the importance of having a fire alarm system in the first place. Before getting into how an addressable system works without an end of line resistor or what is an end of line resistor eol we need to look at what a fire alarm system is in the first place. Inspection do s and don t s part 4.

We have a normally closed with an end of line resistor that s not actually at the end of the line. The end of line resistor used in fire alarm systems and security systems may look the same as a terminating resistor however the function of the end of line resistor is completely different. When you wire an alarm system whether it is addressable or conventional all wired devices as well as the loop or the conductors used in wiring must be supervised for operation and connectivity by the main panel through the eol there are two ways to wire eols. In this video we talk about using resistors in securrity alarm panels.

The resistor would actually be at the end of the line and supervision would be accomplished. It s important to understand that the signals used in fire alarm systems are dc either on or off not ac which carries information like video or. End of line resistors eols are very important for circuit and loop supervision. They only close the circuit when they trip.

Each manufacturer of protective systems e g. The resistor would actually be at the end of the line and supervision would be accomplished. Fire alarm system specifies their own value.