How Do The Fire Routing and Fire Protection Relays Work ?…
The fire and fault relays can work in 2 ways, either with a monitored output (as per EN54) or Volt free (dry) contacts. In the normal mode (factory set) when operated they will give you a 24v output suitable for operating a small relay with a coil resistance between 2.6 and 4.5k ohms (effectively the relay coil and wiring to the relay will be monitored for open/short circuit) Warning: whilst in the monitored mode no voltage should be applied to the terminals as damage may occur to the monitoring circuitry. The terminals in monitored mode are labelled with a + & – symbol. If traditional Volt free (dry) contacts are required then the 3 way black jumper links situated next to each of the relevant relays (positioned top right of the panel motherboard) should be removed.
