Johnson Controls IOM3731 Installation Manual page 8

Communications bus and power
supply terminal block rating and
requirements
Table 4: Communications bus and supply power terminal blocks, functions, ratings, requirements, and cables
Terminal block/Port
Terminal labels
label
+
-
COM
FCBUS or SABUS
SHLD
or
SAPWR
SA/FC BUS
(Port)
HOT
24~
COM
Note: The SA Bus and FC Bus wiring
recommendations in this table are for MS/TP
bus communications at 38,400 baud. For more
information, refer to the MS/TP Communications
Bus Technical Bulletin (LIT-12011034)
Commissioning the Controllers
You commission controllers with the CCT software, either
via a Bluetooth Wireless Commissioning Converter, a
ZigBee wireless dongle, or through MAP 4.2+/BACnet
Table 5: Status LEDs and descriptions of LED states
LED label LED color
POWER
Green
FAULT Red
8 IOM3731 Input/Output Module Installation Guide
Function, electrical ratings/Requirements
FC or SA Bus Communications
Signal Reference (Common) for FC or SA Bus
communications
SHLD on FC Bus: Isolated terminal (optional shield
drain connection
SAP WR on SA Bus: 15 VDC power lead connection
Note: The SA PWR terminal on an IOM
controller does not supply 15 VDC. The SA
Bus supervisor (FAC, FEC, or VMA) supplies
15 VDC to devices on the SA Bus requiring
power.
RJ-12 6-Position Modular Connector provides:
FC or SA Bus Communications
FC or SA Bus Signal Reference and 15 VDC
Common
Commissioning Converter or ZFR /ZFR Pro Wireless
Router
(Maximum total current draw for SA Bus is 100
mA.)
24 VAC Power Supply - Hot
Supplies 20-30 VAC (Nominal 24 VAC)
24 VAC Power Supply - Common
(Isolated from all other Common terminals on
controller.)
Normal LED state Description of LED states
Off Steady = No Supply Power or the controller's polyswitch/resettable fuse is
open. Check Output wiring for short circuits and cycle power to controller.
On Steady
On Steady = Power Connected
Off Steady = No Faults
On Steady = Device Fault; no application loaded; Main Code download required, if
Off Steady controller is in Boot mode, or a firmware mismatch exists between the controller
and the ZFR1811 Wireless Field Bus Router.
Blink - 2 Hz = Download or Startup in progress, not ready for normal operation
Router (Mobile Access Portal (MAP) Gateway at version
4.2 or above), or in BACnet router mode when connected
to an NAE or NCE. Refer to the Controller Tool Help
(LIT-12011147) for detailed information on commissioning
controllers.
Troubleshooting the Controllers
Observe the Status LEDs on the front of the controller and
use the following table to troubleshoot the controller.
Recommended cable type
FC Bus: 0.6 mm (22 AWG) stranded,
3-wire twisted, shielded cable
recommended.
SA Bus: 0.6 mm (22 AWG) stranded,
4-wire (2 twisted-pairs), shielded
cable recommended.
Note: On the SA Bus, the + and
- wire are one twisted pair, and
the COM and SA PWR are the
second twisted pair of wires.
Wireless Commissioning Converter
retractable cable or 24 AWG 3-pair
CAT 3 Cable <30.5 m (100 ft)
0.8 mm to 1.0 mm
(18 AWG) 2-wire