PEAK® OEM 18 240 Volt SMART Equipment Controller Installation Instructions
19
SA/FC Bus and Supply Power Wiring Guidelines
Table 5 provides information about the functions, ratings, and requirements for the communication bus and supply
power terminals; and guidelines for wire sizes, cable types, and cable lengths when wiring the controller's
communication buses and supply power.
In addition to the guidelines in Table 5, observe these guidelines when wiring an SA or FC bus and the 120/240 VAC
supply power:
•
Run all low-voltage wiring and cables separate from high-voltage wiring.
•
All SA and FC bus cables, regardless of wire size, should be twisted, insulated, stranded copper wire.
•
Shielded cable is strongly recommended for all SA and FC bus cables.
•
Refer to the
MS/TP Communications Bus Technical Bulletin (LIT-12011034)
for detailed information regarding
wire size and cable length requirements for the SA and FC buses.
•
Refer to the
N2 Communications Bus Technical Bulletin (LIT-636018)
for detailed information regarding wire
size and cable length requirements for the N2 bus.
Table 5: Communication Bus and Supply Power Terminal Blocks, Functions, Ratings, Requirements, and
Cables (Part 1 of 2)
Terminal
Block/Port
Label
Terminal Labels
Function, Electrical Ratings/Requirements
Recommended Cable Type
120/240
VAC
~INPUT
L
120/240 VAC Power Supply - Hot
120/240 VAC, 50/60 Hz
The power supply quick disconnects
can accommodate the following
maximum wire sizes:
•
two wires per terminal: 1.5 mm
2
18 AWG maximum
•
one wire per terminal: 2.5 mm
2
12 AWG maximum
Note:
Determine the required wire
size for the line voltage input power
terminals according to the controller
operational VA specification and the
local, regional, or national, electric
codes.
N
120/240 VAC Power Supply - Neutral
120/240 VAC, 50/60 Hz
20 VA
Functional Earth
FC BUS/
SA BUS
FC BUS
(Upper)
+
FC Bus Communication
0.6 mm (22 AWG) stranded, 3-wire
twisted, shielded cable recommended
-
COM
Signal Reference (Common) for Bus
communications
SHD
Isolated terminal (optional shield drain
connection)
SA BUS
(Port)
SA BUS
RJ-12 6-Position Modular Connector provides:
SA Bus Communications SA Bus Signal
Reference and 15 VDC Common
15 VDC, 71.5 ohms at 4 W, Power for Bluetooth
Commissioning Converter or ZFR1811 Wireless
Router
24 AWG 3-pair CAT3 Cable <30.5 m
(100 ft)
FC BUS/
SA BUS
SA BUS
(Lower)
+
SA Bus Signal Reference and 15 VDC Common
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.
-
COM
SA Bus Communications
PWR
15 VDC Supply Power for Devices on the SA Bus
(Maximum total current draw for SA bus is 240
mA)
