Table 71: Smart Equipment™ UCB - LEDs
Location
Label
Description
Function and comments
POWER Green UCB power indicator
Lit indicates 24 VAC is present at C and 24 V terminals
FAULT
Red hard lockout, networking error and firmware error
indicator
1/2 second on/off flashing indicates one or more alarm is currently active, 1/10th second
on/off flashing indicates a networking error (polarity, addressing, etc.) or a firmware error
(likely correctable with re-loading from USB flash drive)
N
SA BUS Green UCB SA bus communication transmission indicator
Lit/flickering indicates UCB SA bus communication is currently active, off indicates the
UCB is awaiting SA bus communication
Table 72: Smart Equipment™ UCB - optional communication sub-board
Location
Label
Description
Function and comments
FC+
FC (“Field Connected”) BUS BACnet MSTP communication
Positive of the VDC (typically, a fluctuating 1.5 to 3.5 V reading to COM; at least 0.25
V higher than –) FC bus BACnet MSTP communication circuit
FC–
FC (“Field Connected”) BUS BACnet MSTP communication
Positive of the VDC (typically, a fluctuating 1.5 to 3.5 V reading to COM; at least 0.25
V lower than +) FC bus BACnet MSTP communication circuit
COM
Common for the FC (“Field Connected”) BUS BACnet MSTP
communication circuit
Negative of the VDC FC bus BACnet MSTP communication circuit
O
Terminal FC BUS
connections
SHLD
Shield for the FC (“Field Connected”) BUS BACnet MSTP
communication circuit
Earth ground reference of the cable to prevent interference on the FC bus BACnet
MSTP communication circuit
Q
EOL switch
End Of Line selector switch for the FC BUS BACnet MSTP
communication circuit
ON selected only for the UCB that is the terminus of the FC bus BACnet MSTP
communication cable to prevent signal “bounce-back”
EOL
Green End Of Line indicator
Lit indicates the EOL switch is selected ON
P
FC BUS
Green FC bus communication transmission indicator
Lit/flickering indicates outgoing UCB FC bus communication is currently active, off
indicates the UCB is awaiting incoming FC bus communication
R
ISO PWR
Green communication board Isolated Power indicator
Lit indicates the UCB is supplying power to the communication sub-board
Table 73: Cable for FC Buses and SA Buses in Order of Preference
Non-Plenum Applications
Plenum Applications
Bus and Cable Type
Part Number
O.D.
Part Number
O.D.
1
FC Bus:
22 AWG Stranded, 3-Wire Twisted Shielded Cable
Anixter:
CBL-22/3-FC-PVC
Belden
®
: B5501FE
0.138 in.
Anixter: CBL-22/3-FC-PLN Belden:
B6501FE
0.140 in.
SA Bus (Terminal Block):
22 AWG Stranded, 4-Wire, 2 Twisted-Pair Shielded Cable
Anixter:
CBL-22/2P-SA-PVC
Belden: B5541FE
0.209 in.
Anixter: CBL-22/2P-SA-PLN
Belden: B6541FE
0.206 in.
2
SA Bus (Modular Jack):
26 AWG Solid 6-Wire, 3 Twisted-Pair Cable
—
—
Anixter preassembled: CBL-
NETWORK25 CBL-NETWORK50 CBL-
NETWORK75 CBL-NETWORK100
0.15 in.
FC Bus:
22 AWG Stranded, 3-Wire Twisted Non-Shielded Cable
Belden: B5501UE
0.135 in.
Belden: B6501UE
0.131 in.
SA Bus (Terminal Block):
22 AWG Stranded, 4-Wire, 2 Twisted-Pair Non-Shielded
Cable
Belden: B5541UE
0.206 in.
Belden: B6541UE
0.199 in.
1
We strongly recommend 3-wire (for FC bus) and 4-wire, 2 twisted-pair (for SA bus), 22 AWG stranded, shielded cable. A 22 gauge
cable offers the best performance for various baud rates, cable distances, and number of trunk devices primarily due to lower
conductor-to-conductor capacitance. Shielded cable offers better overall electrical noise immunity than non-shielded cable.
Observe the shield grounding requirements.
2
We recommend 26 AWG solid, 6-wire (3 twisted pairs) cable as the best fit for fabricating modular cables with the modular jack
housing assembly. Be sure the cable you use fits the modular jack housing. The preassembled cables that are available from
Anixter (Part No. CBL-NETWORKxxx) use 24 gauge wire.
INSTALLATION MANUAL ZY SERIES 3 - 10 ton 60 Hertz R-410A
108
Johnson Controls Ducted Systems
Содержание ZY Series
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