Table 5: Communications bus and supply power terminal blocks, functions, ratings,
requirements, and cables
Terminal
block/Port
label
Terminal labels
Function, electrical ratings/
Requirements
Recommended cable
type
+
-
FC Bus Communications
COM
Signal Reference (Common) for Bus
communications
FC BUS
SHLD
Isolated terminal (optional shield
drain connection )
0.6 mm (22 AWG)
stranded, 3-wire
twisted, shielded cable
recommended
+
-
SA Bus Communications
COM
SA Bus Signal Reference and 15
VDC Common
SA BUS
SA PWR
15 VDC Supply Power for Devices
on the SA Bus
(Maximum total current draw for SA
Bus is 240 mA.)
0.6 mm (22 AWG)
stranded, 4-wire (2
twisted-pairs), shielded
cable recommended.
Note:
The + and - wire
are one twisted pair,
and the COM and SA
PWR are the second
twisted pair of wires.
FC BUS
(Port)
FC BUS
RJ-12 6-Position Modular Connector
provides:
FC Bus Communications
FC Bus Signal Reference and 15
VDC Common
15 VDC, 180 mA, Power for
Bluetooth Commissioning
Converter
Bluetooth Commissioning
Converter retractable
cable or 24 AWG 3-pair CAT
3 cable or above.
Sensor
(Port)
SENSOR
RJ-12 6-Position Modular Connector
provides:
SA Bus Communications
SA Bus Signal Reference and 15
VDC Common
15 VDC Power for devices on the SA
bus and Bluetooth Commissioning
Converter
24 AWG 3-pair CAT3 cable
<30.5 m (100 ft)
HOT
24 VAC Power Supply - Hot
Supply 20–30 VAC (Nominal 24 VAC)
24~
COM
24 VAC Power Supply Common
(Isolated from all other Common
terminals on controller)
14 VA
0.8 mm to 1.0 mm
(18 AWG) 2-wire
21
PCA3613 Advanced Application Programmable Controller Installation Instructions