Distech ECYPSE - Cat 5 E Cable Subnetwork Data Bus; Cat 5 E Cable Subnetwork Data Bus Cable Requirements

Subnetwork Installation Guidelines
ECLYPSE User Guide 139
Cat 5e Cable Subnetwork Data Bus
The Cat 5e Cable subnetwork data bus is used to connect compatible room devices (Table
12-1) to any Distech Controls ECLYPSE series controller. See Subnetwork Module
Compatibility and Supported Quantity Charts on page 136 for a list of compatible extension /
expansion modules.
Never connect an IP (Ethernet) network to the SUBNET PORT connector of a
controller or RJ-45 connector of a room device. Equipment damage may result.
Cat 5e Cable Subnetwork Data Bus Cable Requirements
The Cat 5e Cable subnetwork data bus uses commonly available Cat 5e structural cabling
fitted with RJ-45 connectors. If you make your own patch cable, use Category 5e cable and
crimp the RJ-45 connectors at both ends of the cable either as T568A or T568B.
Table 12-3: Cat 5e Cable Subnetwork Data Bus Physical Specifications and Cable
Requirements
Parameter
Details
Maximum number of room
devices
See Subnetwork Module Compatibility and Supported
Quantity Charts on page 136. See also the Controller’s
Datasheet.
Subnet ID Addressing
Configuration
See Setting the Subnet ID Addressing for Room
Devices on page 143.
Media
Cat 5e Patch Cable with RJ-45 Connectors (standard
straight patch cable)
RJ-45 Pin Configuration
Four (4) pairs required. Straight-through wiring. Crimp
connectors as per T568A or T568B (both cable ends
must be crimped the same way).
See Table 12-4 and Figure 12-4.
Characteristic impedance
100-130 Ohms
Distributed capacitance
Less than 100 pF per meter (30 pF per foot)
Maximum total length of the Cat
5e Cable subnetwork data bus
plus the 2-Wire subnetwork data
bus
300 m (1 000 ft.) Maximum – See Subnetwork Data Bus
Length on page 137
Maximum length of the Cat 5e
Cable subnetwork data bus
180 m (600 ft.) Maximum – See Subnetwork Data Bus
Length on page 137
Polarity
Polarity sensitive
Multi-drop
Daisy-chain (no T-connections)
Most room devices have two RJ-45 female pass-
through connectors to facilitate the daisy-chain
connection of room devices.
For the EC-Multi-Sensor: An optional ECx Subnet
Adapter (Y-splitter) is available to facilitate the daisy-
chain connection of room devices. The ECx Subnet
Adapter must be connected directly to the EC-Multi-
Sensor and its length cannot be extended.
EOL terminations
Must be set / enabled on the last room device only
Shield grounding
Not applicable