Analog Outputs - Trane Tracer AH540 Setup And Operation

Chapter 3 Input and Outputs
Table 4. Analog output functions and locations
AH540
Output
Terminal label
label
AO1 TB11/1 OUT
TB11/2 GND
AO2 TB12/1 OUT
TB12/2 GND
AO3 TB13/1 OUT
TB13/2 GND
AO4 TB14/1 OUT
TB14/2 GND
AO5 TB15/1 OUT
TB15/2 GND
AO6 TB16/1
TB16/2
1 Each analog output can be configured for 0–10 Vdc or 2–10 Vdc operation, and normally open or normally closed.
16
Figure 8. Binary output wiring schematic
24 Vac
Termination board
GND
Each binary output has a green status LED on the Tracer AH540/541 con-
troller board (see Figure 1 on page 4). The LED is off when the relay con-
tacts are open. The LED is on when the relay contacts are closed.
When the binary output relay is Off (contact is open), a multimeter
should measure 0 Vac across the output terminals. When the binary out-
put relay is On (contacts are closed), a multimeter should measure 24 Vac
across the output terminals.

Analog outputs

The Tracer AH540/541 controller has five analog outputs that are
assigned to the specific functions shown in Table 4
AH541
Factory Field
terminal terminal
label label
J11 AO1 Supply fan speed
J12 AO2 Cool valve output or
two-pipe changeover
J13 AO3 Heat output (water, steam, or
electric heat sequencer)
J14 AO4 Face-and-bypass damper
J15 AO5 Outdoor air damper
J16 AO6 Not used
BO1
GND
Function
Wiring external to the
termination board
Supply fan
start/stop relay
Maximum
Output range
output
1
default value
rating
0 to 10 Vdc 20 mA
ground
2 to 10 Vdc 20 mA
ground
2 to 10 Vdc 20 mA
ground
2 to 10 Vdc 20 mA
ground
2 to 10 Vdc 20 mA
ground
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CNT-SVX05B-EN