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2.5.5 Network
Interface
The network permits the connection of other panels,
remote terminals and other devices to complete a
distributed system.
Either an HSP-503 (STD) standard network
interface card or an HSP-509 (FT) fault tolerant
network interface card must be installed in the
panel. All network nodes must be installed with the
same type of interface.
Cable must be twisted pair 18AWG or 20AWG.
Screened type cable is recommended (e.g. Belden
8760, 8762). Connect the screen to the designated
terminal block positions only.
Each interface card has independent connectors for
the outgoing and incoming network cable. Using a
twisted-pair cable, connect from the “OUT” socket
on the first panel to the “IN” socket on the next
panel as follows.
SCN
B
A
A
B
SCN
IN OUT
To Base Card
OUT
Screen
B
A
Screen
B
A
IN
STD (Up to 32 nodes)
The “IN” terminals on the first node and the “OUT”
terminals on the last node are not used. Connect an
ELR (150
Ω
) resistor between A and B on the
terminal blocks of the unused sockets.
Maximum cable length (overall length) is 1500m
using recommended cables.
FT (Up to 200 nodes)
Other Network devices must be fitted with a FT type
adaptor card.
Install a cable from the last node “OUT” terminals
back to the first node “IN” terminals to form a ring.
Maximum cable length between nodes is 1500m
using recommended cables. Maximum cable length
(overall length) is 20000m using recommended
cables.
OUT
IN O UT
IN O UT
IN O UT
IN
ELR 150ohm ½ W
ELR 150ohm ½ W
1500m
STD
O UT
IN O UT
IN OUT
IN OUT
IN
20000m (m ax)
1500m
FT
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