IOM2710 and IOM3710 Input/Output Modules Installation Instructions
4
3.
If the IOM is connected to the SA Bus of an NCE or
FEC, wire the SA Bus in a daisy chain (Figure 6).
Note:
The SA/FC Bus Port (RJ-12 6-position
modular connector) provides 15 VDC on one of its
pins, which is used to power the MS-BTCVT.
Note:
If the IOM controller is at one end of the SA
Bus daisy chain, set the End-of-Line (EOL) switch
to ON.
4.
Connect power to the IOM controller.
5.
Download and commission the IOM controller. See
the
section.
SA/FC Bus Port
The SA/FC Bus port on the front of the IOM is an
RJ-12, 6-position modular jack that provides a
connection for the Wireless Commissioning Converter.
See Table 1 for more information. The SA/FC Bus Port
pin assignment is shown in (Figure 7).
Figure 5: FC Bus Terminal Block Wiring
Stranded 3-Wire Twisted Shielded Cable
Isolated Shield
Connection
Terminal
+
_
CO
M
SH
L
D
To Next
Device on
the FC Bus
Segment
FC Bus
Terminal
Block Plugs
F
IG
: f
c_
bus
_t
er
m
s
+
_
CO
M
SH
L
D
Terminating Device
on FC Bus Segment
To Next
Device on
the FC Bus
Segment
Daisy Chained Device
on FC Bus Segment
Stranded, 4-Wire (2 Twisted Pair) Shielded Cable
(One twisted pair is the and leads.
The second pair is COM and SA PWR.)
+
-
Cable Shield
Connection
To Next
Device on
the SA Bus
F
IG
:s
a_b
us
_
te
rm
s
SA Bus
Terminal
Block Plugs
Terminating Device
on SA Bus
Daisy Chained Device
on SA Bus
To Next
Device on
the SA Bus
+
CO
M
SA
PW
R
+
CO
M
SA
PW
R
Figure 6: SA Bus Terminal Block Wiring
Figure 7: Pin Number Assignments for
Sensor, SA Bus, and FC Bus Ports on
FEC, IOM, and VMA16
Power
(15 VDC)
SA or FC Bus +
SA or FC Bus
-
Bus and Power Common
Power
(15 VDC)
Sensor, SA Bus, or FC Bus Port
(RJ-12 Modular Jack)
Bus and Power Common
F
IG
:R
J_pi
n
o
ut
2
3
4
5
6
1
