BAS-SVX40K-EN
31
Figure 14.
Wiring the WCI coordinator to the SC+ when power budget allows
Tracer SC+
WCI
1
WCI
up to
8*
SS
*When connecting WCIs
directly to the SC+ IMC,
make sure the WCIs don’t
violate the power budget.
Notes:
•
A maximum of eight coordinator WCIs are allowed to be connected to the Tracer SC and SC
+ wired as a daisy chain. No “star” type wiring is allowed. See diagrams above.
•
Use both IMC terminals on the PM014 for wiring multiple WCIs (see the detail in
•
The total combined length of both IMC links must not exceed 656 feet (200 meters).
•
Exceeding 656 feet (200 meters) will cause the IMC communication signal to degrade.
•
Use Trane purple communication cable (2 conductor, 18 AWG stranded, 25pF/ft. with
braided shield) for the communication link.
•
Use a separate 2 conductor 18 — 22 AWG stranded, optionally shielded cable for the power.
•
On SC, all coordinators should be powered by the PM014. On SC+, coordinators can be
powered directly from the SC+ IMC port as long as it stays within the power budget. On SC+,
if power budget is exceeded when wiring directly to the SC+, then a PM014 should be used
and all coordinators powered from the PM014.
•
The braided shielding wires for communication should run continuously from the WCI at the
end of the link, all the way back to the PM014 and then be connected to the chassis ground
termination on the PM014. At the last WCI on the opposite end of the link , the shielding
braid is not connected and is taped back.
