Analog Inputs - Trane Tracer AH540 Setup And Operation

Table 5. Analog input functions and locations
AH540
Input
Terminal label
label
IN 1 TB31/1 IN
TB31/2 GND
IN 2 TB32/1 IN
TB32/2 GND
IN 3 TB33/1 IN
TB33/2 GND
IN 4 TB34/1 IN
TB34/2 GND
IN 5 TB35/1 IN
TB35/2 GND
IN 6 TB36/1 IN
TB36/2 GND
TB43
4
IN 13
Duct
static
1 See Appendix for analog input sensor curves (Table 73, Table 74, Table 75, Table 76, and Table 77).
2 Sensor type: Switched resistance fan auto = 2320
3 Sensor type RTD averaging sensor, 1000
4 This input is located on the main control board.
CNT-SVX05B-EN

Analog inputs

The Tracer AH540/541 controller has eight analog inputs. Table 5
describes the function of each of the analog inputs. Each function is
described in the following paragraphs. For an explanation of the diagnos-
tics generated by each input, see Chapter 6, "Verifying operation and
communication." For more information about how the controller operates,
see Chapter 4, "Sequence of operation."
AH541
Factory Field
terminal terminal
label label
J31 IN1 Space temperature
J32 IN2 Local setpoint
J33 IN3
Fan mode switch
J34 IN4 Discharge air
temperature
J35 IN5 Outdoor air
temperature
J36 IN6 Mixed-air
temperature
Space relative
humidity
CO
Entering water
temperature
Evaporator refriger-
ant temperature
Generic temperature
J43 Duct Duct static pressure
static
Ω
, ±5%, fan off = 4870
Ω
at 0°C, platinum 385 curve.
Function
Sensor type
10 kΩ thermistor
1 kΩ
potentiometer
2 Switched
resistance
10 kΩ thermistor
10 kΩ thermistor
3
RTD
Current:
4–20 mA
sensor Current:
2
4–20 mA
10 kΩ thermistor
10 kΩ thermistor
10 kΩ thermistor
Duct static-
pressure sensor
(Trane part num-
ber 4020 1159)
Ω
, ±5%.
Analog inputs
1
Valid ranges
5°F to 122°F
(-15°C to 50°C)
50°F to 85°F
(10°C to 29.4°C)
Off (4870 Ω ±5%)
Auto (2320 Ω ±5%)
–40°F to 212°F
(-40°C to 100°C)
-40°F to 212°F
(-40°C to 100°C)
-40°F to 212°F
(-40°C to 100°C)
0 to 100%
0 to 2000 ppm
-40°F to 212°F
(-40°C to 100°C)
-40°F to 212°F
(-40°C to 100°C)
-40°F to 212°F
(-40°C to 100°C)
0 to 1250 Pa
0 to 5.02 in. water
17