COM 1 -
Communication network connections:
Connect to COM 2 terminals of the next
device on the loop, A to A and B to B.
COM 2 -
Communication network connections:
Connect to COM 1 terminals of the
previous device on the loop, A to A and B
to B.
24 VDC -
Connect the "+" terminal to the positive
side of the 24 vdc power source. (Both "+"
terminals are connected internally.)
Connect the "-" terminal to the negative
side of the 24 vdc power source. (Both "-"
terminals are connected internally.)
4.
Connect the shields to the two designated "shield"
terminals. The two shield terminals are connected
internally to ensure shield continuity.
Do not
ground
either shield at the network extender enclosure.
Insulate the shields to prevent shorting to the
device housing or any other conductor.
5.
Check all field wiring to ensure that the proper
connections have been made.
6.
Inspect the enclosure O-ring to be sure that it is in
good condition and properly installed. Lubricate the
O-ring and the threads of the enclosure cover to
ease both installation and future removal of the
cover. The recommended lubricant is a silicone free
grease available from Detector Electronics. If the
installation uses catalytic type combustible gas
sensors, it is imperative that lubricants containing
silicone not be used, since they will cause
irreversible damage to the sensor. Place the cover
on the enclosure. Tighten only until snug.
Do not
over tighten.
TYPICAL APPLICATIONS
Figure VII-45 shows a power supply monitor wired on a
LON between a UV detector and a DCU.
Figure VII-46 illustrates the power and communication
wiring for a UV detector, an IDC and a DCU, connected
to a standard LCU (EQ2100LCU) and an LIOU.
Figure VII-47 illustrates the power and communication
wiring for a UV detector, an IDC and a DCU, connected
to the optional LCU (EQ2101LCU) and an LIOU.
Figure VII-48 shows the power and communication
wiring for a UV/IR detector, an EQ2500SAM and an
EQ2500ARM, connected to a standard LCU
(EQ2100LCU) and an LIOU.
Figure VII-49 shows a network extender wired between
a UV detector and a DCU.
Figure VII-50 shows a high temperature UV detector
wired between a standard UV detector and a DCU.
95-8470
VII-31
Table VII-13—Maximum Wiring Length from Nominal 24 vdc
Power Source to Network Extender
Wire Size
Maximum Wiring Distance
Feet
Meters
18 AWG (1.0 mm2)*
2200
650
16 AWG (1.5 mm2)*
3500
750
14 AWG (2.5 mm2)*
5600
1700
* Approximate Metric Equivalent.
Содержание Eagle Quantum 95-8470-05
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