Installation Guide
MX1
Fire Alarm System (NZ)
LT0360 ISSUE 2.43
29 NOVEMBER 2017
PAGE 17
Figure 25
– I-HUB mounting in
Slimline cabinet
The LM0572 cable should have the 10 way FRC connector cut off, and the labelled leads wired into the appropriate
terminals of the I-HUB.
The OSD139 fibre optic modem is available in both single-mode (OSD139AFL) and multi-mode (OSD139AF)
variants.
Typically, single-mode fibre is suitable for a least 25km and multi-mode for at least 3km. However specific optical
loss budget calculations will need to have been carried out for the design of the network.
Note:
In Figure 24 the isolated RS485 ports 1 and 2 are connected to the I HUB’s 0V and 24V. This could violate
the earth isolation system and therefore both the segment on port 1 and the segment on port 2 must use fibre optic
cabling. Isolation is still maintained between I HUBs via the non-conductive nature of fibre cabling.
If an I-HUB requires both copper and fibre connections contact Johnson Controls technical support for details.
I-HUB Mounting
Slimline Cabinet
The I-HUB (FP0771) is mounted in the left side of the cabinet. Remove the I-HUB module from its mounting plate
and mount it on the standoffs using 8 screws as shown in Figure 25. Optional OSD fibre modems can be mounted
on the gear plate or on the right-hand side of the cabinet in place of the
MX1
Loop Card using the FP1032 OSD139
Fibre Optic Modem Bracket (see Figure 25 & 26).
Note:
When using fibre cabling you must allow for cable entry and the minimum bend radius in deciding the cable
route to the modems (commonly 60-90mm for field cables, 40mm for patch leads).
15U Cabinet
The I-HUB (FP0771) is usually mounted on the right hand gearplate
flange (see Figure 27). Optional OSD fibre modems can be mounted on
the
MX1
gearplate in place of
MX1
Loop Cards by using the FP1032
OSD139 Fibre Optic Modem Bracket (see Figure 26).
Note:
When using fibre cabling you must allow for cable entry and the
minimum bend radius in deciding the cable route to the modems
(commonly 60-90mm for field cables).
Networking Using PIBs
For detailed information on mounting, wiring and programming the PIB,
Moxa switch and Ethernet Extender please refer to the PIB User Manual (LT0519).
The PIB comes pre-configured for
the recommended “RING” configuration using Moxa fibre switches as shown in
Figure 28.
I-HUB
OSD139 Fibre Optic
Modem mounting
position
Figure 26
– OSD139 Fibre Optic Modem Bracket
(FP1032) with two OSD139 modems
I-HUB
Figure 27
I-HUB Mounted on right side Flange
