24 Vac Measurement - Trane Tracer UC600 Integration Manual

Figure 2. LED locations
U C 600
Table 1. LED activities and troubleshooting tips
LED Type
Solid green
Power Solid red
Blinking red
TX (transmit) blinks green
RX (receive) blinks yellow
Communications
RX on solid (yellow)
(Link, MBUS, IMC)
LED not illuminated
Solid green
Service
LED not illuminated
Solid yellow
Binary outputs (BOI
through BO4)
LED not illuminated
LINK on solid (green)
Ethernet
Act flickers (yellow)

24 Vac Measurement

1. Verify that the 24 Vac connector and chassis ground are properly wired.
2. Remove 24 Vac connector from the UC600.
3. Remove the lockout/tagout from the line voltage power to the electrical cabinet.
4. Using a digital multimeter (DMM), verify that 24 Vac is present at the 24 Vac connector.
If voltage reading is within plus or minus 10%, connect the 24 Vac connector to the transformer
XMRF input on the UC600.
BAS-SVP18D-EN
B O 1 B O 2 B O 3 B O 4
Binary output status
LEDs
ADDRESS
x100 x10 x1
LED Activity
Normal operation
Low voltage or malfunction
Alarm or fault is present
Normal operation; blinks at a fixed rate
when transferring data to other devices
on the link
Normal operation; blinks at a fixed rate
when receiving data from other devices
on the link
Reverse polarity is present
The controller is not detecting
communication
LED has been pressed and remains on
until powered down (does not affect
normal operation)
Normal operation
Relay coil energized
Relay coil de-energized or No command
Valid Ethernet connection
Data transmission and reception
U U C C 6 6 0 0 0 0 R R o o t t a a r r y y S S w w i i t t c c h h e e s s a a n n d d L L E E D D s s
Communication status
(Link, MBUS, IMC)
Indicates
Sequence on powerup: Illuminates red,
then flashes green, then solid green.
TX LED: Regardless of connectivity, the TX
will blink as it searches for devices to
communicates with.
•
•
•
Power LED
LINK MBUS
TX
RX
LINK
ACT
SERVICE TOOL
Ethernet LEDs
Service button and LED
Troubleshooting/Notes
Cycle the power to re-establish
communication.
Verify that the controller is capable of
communicating with other devices on
the link.
Check polarity and baud rate.
IM C
SERVI C E
7