
RTAG chillers utilize the following control/ interface com-
ponents:
Tracer™ UC800 Controller
Tracer AdaptiView™ TD7 Operator Interface
This section covers information pertaining to the UC800
controller hardware.
Wiring and Port Descriptions
Figure 21
illustrates the UC800 controller ports, LEDs,
rotary switches, and wiring terminals. The numbered list
following
Figure 21
corresponds to the numbered call-
outs in the illustration.
1. Rotary Switches for setting BACnet® MAC
address or MODBUS ID.
2. LINK for BACnet MS/TP, or MODBUS Slave
(two terminals, ±). Field wired if used.
3. LINK for BACnet MS/TP, or MODBUS Slave
(two terminals, ±). Field wired if used.
4. Machine bus for existing machine LLIDs (IPC3
Tracer bus 19.200 baud). IPC3 Bus: used for
Comm4 using TCI or LonTalk® using LCI-C.
5. Power (210 mA at 24 Vdc) and ground termi-
nations (same bus as item 4). Factory wired.
6. IMC for MODBUS Master (two terminals, ±).
Field wired if used.
7. Marquee LED power and UC800 Status indi-
cator (
Table 26, P 55.
).
8. Status LEDs for the BAS link, MBus link, and
IMC link.
9. USB device type B connection for the service
tool (Tracer TU).
10. The Ethernet connection can only be used
with the Tracer AdaptiView display.
11. USB Host (not used).
Figure 21. Wiring locations and connection ports
RTAG-SVX001H-EN
55