impro IXP20, Installation Manual

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ISC304-0-0-GB-06 April 2011 Page 5
NOTE: The 3 V, CR2032 Lithium cell Battery is partially installed in all models of the
IXP20 Controller.

An extra Fixed Address Label.
General
Remember the following when installing the IXP20 Controller:
Communications Distance
RS485 Terminal Port
The RS485 communications distance between the ImproX Controller and the LAST
ImproX Terminal in a cable run, MUST NOT exceed 1 km (1 090 yd). Achieve this by
using good quality screened, twisted 2-pair cable, with the screen EARTHED at one
end.
Jumper Links
Long tra
nsmission lines or multiple “star” connections, may cause communication
problems. Placing a Jumper Link across the jumper (See Figure 3 for position) in the
LAST UNIT AT THE END OF THE CABLE RUN should solve the problem.
Distance between the Controller and its Wiegand or Multi-Discipline
Readers
CAUTION: When implementing the 150 m (164 yd) cable distances with Impro
Wiegand Readers use the 12 V power output option. Note, however,
that the Multi-discipline Readers only connect using the 12 V power
output option.
For maximum, data communications distance, install the Readers no further than
150 m (164 yd) from the Controller. The cable individual conductor cross-sectional
area should not be less than 0.2 mm
2
(0.0003 in
2
).
Distance between ImproX Units
You can mount IXP20 Controllers (ISC920) directly next to each other. To avoid
mutual interference, install the Touch Screen IXP20 Controllers (ISC921) at least 500
mm (20 in) apart.
To avoid mutual interference, install the Wiegand Readers or Multi-discipline
Readers at least 500 mm (20 in) apart.
EARTH Connection
Connect the IXP20 Controller to a good EARTH point. Using the RS485 Port, connect
the ETH Lead to the
„ETH‟ Terminal. Mains EARTH can be used, but electrical noise
may exist.
CAUTION: When using the IXP20 Controller with FCC approved accessories,
ensure that the RS485 cable is routed through a separate grommet
to the power cable. Also ensure that you use a CE approved Power
Supply Unit.
Blank Space