Vicon Surveyor 99, Руководство по установке и эксплуатации

Страница: 45 / 69

XX002 Rev 799 Surveyor99 Dome System Wiring
••••
35
Recommended Use of the Termination Box
for Daisy Chain Configuration (RS-485
Protocol)
The Termination Box and RJ-45 Cable can also be used to
daisy chain multiple Surveyor99s. Using a Termination Box
for each Surveyor99 provides the means to patch, or
parallel, the control wiring. Connector J3 provides access
to the Surveyor99’s control signals. The RJ-45 Cable has
two male ends which plug directly into connector J3 and
the Termination Box. Since the RJ-45 cable is 8 feet (2.4
m), the Termination Box must be mounted within the
vicinity of the Surveyor99.
The Termination Box provides a convenient adapter from
the RJ-45 connector to individual wires. After the cable is
passed through the Cable Fitting (ceiling-mounted
Surveyor99 only), connect it to Termination Box’s jack.
1. Mount the Termination Box within the vicinity of the
Surveyor99.
2. Remove the cover of the Termination Box and verify
that the pre-wired Terminal Block resembles Figure 33.
3. Disconnect the Common (VSSA) internal wire from the
terminal connection to prevent electrical ground loops
in the wiring. Tuck the terminal behind the remaining
wires to prevent it from touching other terminals.
4. Feed the Control Cable from the Control Unit (CPU) or
previous Surveyor99 into one of the sides of the
Termination Box and connect each wire to the
appropriate screws.
5. Feed the remaining Control Cable from the next
sequential Surveyor99 into the opposite side of the
Termination Box and connect each wire to the
appropriate screws.
6. Verify correct wiring and replace the Termination Box’s
cover.
7. Proceed to the Configuration Section of this manual
for information on setting the 3 Termination jumpers.
NOTE: Use only the supplied Vicon RJ-45 cable or
shielded equivalent.
When wiring several consecutive Surveyor99s, follow the
previous steps for each Camera Dome. Refer to Figure 34 as a general block diagram for the overall cabling
of a typical Daisy Chain.
This version of the Surveyor99 incorporates RS-485 control signals with tri-state logic levels. This essentially
means that any one Surveyor99 set of control signals have a high impedance state they can be switched to,
making that Surveyor99 transparent to the control bus. This allows wiring of the Camera Dome unit control
signals in parallel, thus forming the control bus. Refer to Figure 34.
Figure 33
Termination Box for Daisy Chained
Surveyor99
Figure 34
Block Diagram - Daisy Chained Surveyor99s