Installation Guide
MX1
Fire Alarm System (NZ)
LT0360 ISSUE 2.43
29 NOVEMBER 2017
PAGE 15
Ring Networking Using I-HUBs
For detailed information on mounting, wiring and programming of the I-HUB including use in other configurations
and network topologies please refer to the Panel-Link Intelligent I-
HUB User’s Manual (LT0229).
The I-HUB can be used in a number of different network configurations. It is recommended to use
the “RING”
configuration shown in Figure 21. The I-HUB comes pre-configured for ring operation, with Port 5 (J4) connected to
the
MX1
serial port configured for networking.
Figure 21
– Network Ring Example
I-HUB Wiring
The I-HUB is powered by one of the
MX1
’s +VBF supplies. This supply must not be used for any directly-connected
field wiring, to ensure that fuse failure caused by an external wiring fault does not disable the network. Alternatively,
the I-HUB (and fibre modems if included) could be powered off the Loop Interface Supply terminals J33 using a
fused power lead (e.g., a spare LM0459 supplied with an
MX
Loop Card). The I-
HUB’s J4 TTL serial port is
connected using loom LM0152 to whichever serial port (0, 2, 3 or 4) is configured in the
MX1
for networking as
shown in Figure 22.
Figure 22
– I-HUB to
MX1
Wiring
I-HUB Copper Ring
The I-HUBs are typically connected in a ring configuration as shown in Figure 23.
I-HUB
Port 1
I-HUB
Port 2
I-HUB
Port 1
I-HUB
Port 2
I-HUB
Port 1
I-HUB
Port 2
LM0152
MX1
Controller Board
I-HUB Board
J4 Port 5
2
3
4
0
Power
MX1
Serial
Ports
+24V
0V
+24V
0V