CBX800 INSTALLATION MANUAL
10
The input power signals
Vdc
,
GND
and
Earth
as well as the network signals
REF
,
ID+
,
ID-
and
Shield
; and
RTX+
,
RTX-
and
SGND
are repeated to facilitate system cabling. In this way the power and network busses can
enter and exit the CBX800 from different spring clamps but be physically connected together.
NOTE
To avoid electromagnetic interference:
-
Connect CBX800 Protection Earth (Earth) to a good earth ground.
-
Connect the reading device chassis to earth ground through the jumper, (default setting, see
-
Connect the Network Cable Shield (Shield) to Filtered Earth through the jumper (default
setting, see Figure 6).
CAUTION
Do not connect to the Host Interface spring clamp terminals if using Host Interface Modules
(Fieldbus and non Fieldbus).
JUMPER SETTINGS
POWER SOURCE JUMPER SETTINGS
For most applications input power is provided through the dedicated spring clamp connectors inside the CBX800.
However CBX800 may accept power from the connected reading device through the 25-pin connector. This is
useful, for example, to pass power to connected accessories such as Encoder and Presence Sensor from DX8200A
VAC models or 6K/8K scanners powered directly through the network. See the relative reading device Reference
Manual for details.
To power CBX800 from the reading device, the power source jumper must be placed in the "power from device"
position as indicated in Figure 6.
Power from
device
Power from
clamps (default)
Figure 6
–Power Source Jumper Settings
SOURCE SHIELD JUMPER SETTINGS
The reading device shield (Shield) can be connected to Earth Ground (Earth) either directly or through a filter
circuit. If the jumper is left open, the network cable shield (Shield) is floating.
Equivalent
Filter Circuit
Filtered Earth (default)
Earth
Floating
Figure 7
– Source Shield Jumper Settings