ESP FIREbeam – Installation Manual
Page 15 of 19
2011 Hochiki Europe (UK) Ltd
2-3-0-1340/ISS2/DEC11
3.3.3
Mode Change
Here we can make changes to how the beam behaves. Press
enter
to
go into the ‘Mode Change’ menu and access the sub menus.
Threshold
- use the
right
and
left
keys to increase or decrease
the beams sensitivity. It is factory set at 35% (meaning the received
signal has to drop by 35% to trigger the fire relay. This sensitivity can be
adjusted between 25% (sensitive) and 50% (less sensitive). Press
enter
to return to ‘Mode Change’ or
down
to go to ‘Time to Fire’.
Time to Fire
- you can adjust how long the beam has to be in fire
before the fire relay is triggered. This is factory set at 10s, you may want
to increase this if there is something that may momentarily obscure the
beam path (birds/forklift truck etc). This can be adjusted between 2 and
30 seconds by using the
right
and
left
keys. Press
enter
to
return to ‘Mode Change’ or
down
to go to ‘Time to Fault’.
Time to Fault
- you can adjust the time to fault between 2 and 60
seconds (factory set at 10 seconds). For a beam to go into fault the
beam path must be totally blocked within ONE second. By using the
right
and
left
keys. Press
enter
to return to ‘Mode Change’ or
down
to go to ‘Auto Reset’).
Auto Reset
- the beam is factory set to auto reset when the received
signal raises above the fire threshold hysteresis. This can be set to
latching if your system requires this. Change by using the
right
and
left
keys. Press
enter
to return to ‘Mode Change’ or
down
to go to
‘Align On/Off’.
Align On/Off
- you may want to turn the auto alignment function off, for
example, in an environment that often gets filled with welding smoke, the
auto align function kicks in when the received signal drops below 90%,
the point that the beam automatically checks for building movement. The
beam will try to align through the smoke which could be a problem if it is
unable to see the edges of the reflector. Use the
right
and
left
keys
to turn off and on. When turning this function off extra care should be
taken to ensure that the beam head is on a sturdy fixing, in other words,
a brick wall or major structural steel. Auto alignment will still function in
commissioning. Press
enter
to return to ‘Mode Change’ or
down
to go
to ‘Align Time’.
Align Time
- this is factory set to 4hrs, you can adjust this, by using the
right
and
left
keys, between 0 to 12 hours depending on your
environment. Press
enter
to return to ‘Mode Change’ or
down
to go to
‘Green Flashing Light On/Off’.
Green Flashing Light On/Off
- you can turn the green flashing LED,
located on the head and controller, on or off using the
right
and
left
keys. This is a useful way of identifying the beam head you are working
with. Press
enter
to return to ‘Mode Change’ or
down
to go to ‘Phase’.
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