432-0007-00-12 MVMU-Series Installation Guide.book Page 12 Wednesday, June 24, 2015 4:07 PM
Installing MV/MU-Series Systems
Electrical Connections
Watertight connectors/enclosures should be used on each of the electrical
connections. Table 1.1 shows the connections for the cables attached to the
camera.
TABLE 1.1
Connections Quick Reference
Cable Label
Power
Primary
Secondary
JCU
Wire
Red
Black
Green
BNC-Style Coax
BNC-Style Coax
RJ45
Comment
Nominal 24 Vdc
Absolute range 10 Vdc to 32 Vdc
5 AMP maximum
Vdc
return
Chassis ground
Primary video composite
Secondary video composite
Use shielded Ethernet cable
Caution:
During installation, ensure the cables exiting the bottom of the camera are not in contact with sharp edges, do not bend at sharp angles, and are not pinched between the bottom of the camera and the mounting surface. Do not pull on the cables with excessive force.
Caution:
It is recommended that any built-up triboelectric charge on the Ethernet cable should be discharged before connecting it to the JCU and camera. This can be accomplished simply by pressing an ungloved finger across the Ethernet RJ45 connector of the cable for a few seconds.
Proper Grounding
Caution:
Ensure the camera is properly grounded. Following best grounding practices, the camera chassis ground should use the lowest resistance path possible.
The green wire in the camera cable can be used to provide chassis ground for cable lengths under 2 m (6 ft). For longer cabling, the camera must be connected to a vessel ground using a low-resistance grounding strap connected directly to one of the M8 mounting bolts on the camera base as shown in the MV/MU-Series ICD.
Failure to provide this connection may result in electrical interference between camera and other shipboard electronic systems. Furthermore, it is recommended that a bonded grounding scheme is used with a common ground between the chassis ground and electrical return, with the connection made as close as possible to the negative terminal of the battery.
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432-0007-00-12 MVMU-Series Installation Guide.book Page 13 Wednesday, June 24, 2015 4:07 PM
Installing MV/MU-Series Systems
432-0007-00-12 Rev 110
Connecting Power
The camera itself does not have an on/off switch. Generally the MV/MU-Series camera will be connected to a circuit breaker and the circuit breaker will be used to apply or remove power to the camera. When power is supplied, the camera will be in one of three modes: Booting Up, Standby, or Powered On. The MV/MU-Series
Operator’s Manual has detailed information about powering and operating the camera.
Consider installing a fuse in line with the power connection to protect the camera
from power surge or short circuit. Table 1.2 applies to 24V operation.
TABLE 1.2
Fuse Recommendations
Model
MV/MU-Series
Fuse
10 amp
The installer must use power cable wires that are sufficient size gauge or diameter for the supply voltage and total load (camera and length of cable run), to ensure proper supply voltage at the camera and adequate current carrying capacity.
Table 1.3 lists recommended wire size for various cable lengths.
TABLE 1.3
Power Cable Wire Gauge Recommendation
Length in Meters (Feet)
8 (25)
16 (50)
24 (75)
32 (100)
Wire Gauge (AWG) for
12V Supply
16
14
12
10
Wire Gauge (AWG) for
24V Supply
18
18
16
16
Warning:
Use of insufficient wire gauge can result in fire. Wire gauge depends on supply voltage shown. For lower supply voltages, lower gauge wire must be used.
Video Connections
The video cables from the camera are terminated with BNC-type connectors. Video cables of various lengths with different connectors at one end and BNC-connectors at the other end are available from FLIR. The video cable used should be rated as
RG59/U or better to ensure an adequate quality video signal. For cable runs in excess of 100’, a video amplifier should be used.
Ethernet Connections
The Ethernet cable from the camera can be connected to another Ethernet cable with an RJ45 waterproof enclosure connector (FLIR PN 4115028). The Ethernet network cable should be rated for use with PoE devices (IEEE802.3af) and should be 8-conductor T568B, Ethernet, double-shielded for EMI considerations (for example, 25 foot, FLIR PN 308-0163-25).
MV/MU-Series Installation Guide
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Installing MV/MU-Series Systems
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