Guide d’Installation sonde E4000
E4000 probe Installation Guide
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2. Choosing Cable Bus
2.1.
RS485
The RS422 standard recommends 24AWG (0.23mm2) twisted pair cable with a capacity of 16 pF shunt
per foot and 100 Ohms characteristic impedance. Although the standard does not specify anything for
RS485 wiring, the cable can perfectly be used for RS485.
2.1.1.
Topology
The topology of RS485 cabling must be observed. The cable must go to the first bus coupler device,
leave the first device to the second, etc. .. until the last device.
The topologies in tree, branch or star are not allowed.
2.2.
KONNEX
Use twisted pair cable KNX certified (green)
Board and bus being connected, press the programming button.
The programming LED lights on. Beware if the bus is not connected, the interface KNX board will not
be powered and the motherboard cannot communicate with it. (Red LED continuous).
The probe is in programming mode.
Commissioning and configuration of the probe is made via ETS (KNX Tool Software).
For the setting details, refer to the KNX manual setting.
2.3.
LONWORKS
Use twisted pair cable recommended for LON:
Generic 16AWG cable (1.3mm diameter) (similar to Belden 8471 or 85102)
Cable NEMA Level 4 (This cable is not equivalent to TIA Category IV cable)
TIA Category 5 cable
JY (St) Y for specific applications in Europe.
Commissioning and configuration of the probe is made via LONMAKER software or equivalent.
For the setting details, refer to the LON manual setting
Programming key
Programming LED
Connector for complementary 31 V DC KNX power supply REQUIRED
KNX connector
Connector for power supply 15-31V DC
Connector for LON bus
