version 4.7.2 – July 10th, 2022 Firmware version V2.1.7 and higher
EXXFIRE Installation and Service Manual 61
4.5.4 Install cable for Pre-alarm, Alarm and Fault outputs
Figure 50 Wiring for Pre-Alarm / Alarm / Fault outputs (only for standalone systems or Master system)
Three pairs of relay contacts are provided for simple connection to a panel, or other apparatus
as needed. These may be used to signal a fire or fault, or they may be configured to shut-down
power to a cabinet by connection to an auxiliary relay for example, typically using a screened,
fire-resistant, two core cable.
Choose the most appropriate cable gland for the relay contacts to be used; for a standalone
system the left cable gland is recommended. In case of connected systems (see section 4.5.3)
the connection to the relays must be made to the Master system; in that case the most left
cable gland is used for the cable to connect the systems, so one of the other cable glands must
be used to connect to the relay outputs.
Strip an appropriate amount of the outer sheath away and strip the conductors before inserting
into the cable gland. Ensure that the gland seals tightly against the outer sheathing, providing
both physical support for the cable, and an airtight seal. Failure to do this will result in
increased false alarms since the sampled air flow rate will be less stable.
Keep any excess cable inside the box to a minimum. Excessive looping of “spare” cable will
compromise EMC tolerance, and could lead to increased false alarms.
Push the cables into the terminal blocks.
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