SENSORNET SINGLE-POSITION JUNCTION BOX (J-BOX)
8000-2573-21, REV. F
INSTALLATION GUIDE
6 of 10
6. Run conduit and ac cable to box and clamp
conduit in place (Figure 7).
7. Reattach chassis.
Figure 7. Conduit attachment
8. Wire ac line to TB1 and jumper primary taps of
transformer according to ac source (refer back
to Figure 6).
120Vac:
Place a jumper across taps 1 and 3,
and another jumper across taps 2 and 4.
240Vac:
Place a jumper across taps 2 and 3
only.
9. Reattach PC board assembly.
Changing the Fuse
To reduce the risk of fire, replace fuses with the
same type and rating (3:15A type IEC127, sheet III).
The part number for the fuse is 5111-0017-21. Two
spare fuses are provided inside the cover.
To access fuse, use a small slotted screwdriver to
unscrew the cap of the fuse holder (Figure 7) and
lift out the fuse.
Connecting Power and
Data Cables
Note:
Incoming and outgoing video cables are
connected together within the box. No termination
exists for video cables within the J-Box.
Power Cable Requirements
The low-voltage power cable runs between the
J-Box and the camera dome. The length of this
cable depends on the ac line voltage. See Table 1
for cable lengths based on worst case low line
voltages for Japan (100Vac), North America
(120vac), and Europe (240vac).
Table 1. Cable length vs. line voltage
Worst
Case Line
Voltages
18AWG 16AWG 14AWG
90 Vac
(Japan)
30m
(100ft)
50m
(160ft)
80m
(260ft)
102 Vac
(N. Amer.)
60m
(200ft)
100m
(320ft)
160m
(520ft)
180 Vac
(Europe)
30m
(100ft)
50m
(160ft)
80m
(260ft)
204 Vac
(Europe)
60m
(200ft)
100m
(320ft)
160m
(520ft)
Data Cable Requirements
The data cable contains one non-polarized 22AWG,
unshielded, twisted pair. Up to 1km (3000ft) of data
cable can be run from the Host to the J-Box, or from
J-Box to J-Box (see CAUTION below). For more
information about the SensorNet communication
protocol and possible cable network configurations,
see
Communication Protocols and Cable Networks
,
8000-2573-19.
CAUTION:
The data cable from the J-Box to the
dome is limited by the length of the power cable.
See Table 1 above.
Note:
Power, data, and video cables can be ordered
separately or within a composite cable ordered in
various lengths. Plenum-rated cables must be used
in indoor ceilings used for environmental air return
(called “other air space” in the National Electrical
Code). Order parts through your distribution
network. If you order cable from an outside source,
wire colors may be different.
Conduit
Fuse holders
