Micropack FDS301 - 3.3 Wiring Procedure

3.3
Wirin
g
Procedure
The wirin
g
terminals are
located in the rear
section
o
f
the
detector
enclosure and are accessible
by removal of the end cap.
The front section o
f
the enclosure should
onl
y
be
accessed b
y
trained
p
ersonnel.
The terminal schematic (fi
g
ure 4) detailed below shows the view lookin
g
inside the detector
following removal of the end cap. The terminals are shown numbered to the right of the drawing.
Fi
g
ure 4: Terminal Schematic
The detector has two t
yp
es o
f
alarm out
p
ut
available
simultaneousl
y
•
•
4-20m
A
(source)
Relay (Alarm & Fault)
Listed below are wirin
g
o
p
tions de
p
endant
on
the
functional
re
q
uirements o
f
the detector.
Note: Information below describes how to access RS485 communication b
y
reversin
g
the
polarity of the power when there is no dedicated RS485 pair. This operation will disable
the signal return to the control system whilst enabled. Care should be taken after using
this facility to return the detector to normal operation.
micro
p
ack.co.uk
FDS301 Flame Detector FDS301 Safety and Technical Manual
11
Ref: 2200.5009 Rev: 2.3 ECN 4434