On/Cancel Buttons On The Zone Sensor; Binary Inputs - Trane Tracer AH540 Setup And Operation

Table 7. Binary input functions and locations
AH540
Input
Terminal label
label
IN 7 TB37-1 IN
TB37-2 GND
IN 8 TB38-1 IN
TB38-2 GND
IN 9 TB39-1 IN
TB39-2 GND
IN 10 TB40-1 IN
TB40-2 GND
IN 11 TB41-1 IN
TB41-2 GND
IN 12 TB42-1 IN
TB42-2 GND
1 When configured as a generic binary input, it has no direct effect on controller operation.
CNT-SVX05B-EN
/ buttons on the zone sensor
ON CANCEL
Momentarily pressing the
pied mode places the controller in occupied bypass mode for 120 minutes.
You can adjust the number of minutes the Tracer AH540/541 is placed in
the occupied bypass mode by using the Rover service tool. The controller
remains in occupied bypass mode until the override time expires or until
you press the
CANCEL
If the building automation system sends an unoccupied mode command to
the controller and
goes to occupied bypass and communicates back to the building automa-
tion system that its effective occupancy mode is occupied bypass.
If the controller is in the unoccupied mode, regardless of the source (the
building automation system or a hard-wired occupancy binary input),
pressing the button causes the controller to go into the occupied
ON
bypass mode for the duration of the configured occupied bypass time.

Binary inputs

The Tracer AH540/541 controller has six binary inputs. Each binary
input associates an input signal of 0 Vdc with closed contacts and 24 Vdc
with open contacts. If the wired binary device has closed contacts, a mul-
timeter should measure less than 1.0 Vdc across the binary input termi-
nals. If the binary input has opened, a multimeter should measure
greater than 20 Vdc across the binary input terminals.
Table 7 describes the function of each of the binary inputs. For an expla-
nation of the diagnostics generated by each input, see "Diagnostics" on
page 89 For more information about how the functions of the controller
operate, see Chapter 4, "Sequence of operation."
AH541
Factory Field
terminal terminal
label label
J37 IN7 Low-temperature detection or coil defrost
J38 IN8 Run/stop
J39 IN9
Occupancy or generic
J40 IN10 Supply fan status
J41 IN11 Filter status
J42 IN12 Exhaust fan status or coil defrost
button on the zone sensor during unoccu-
ON
button on the zone sensor.
button on the zone sensor is pressed, the controller
ON
Function
1
Binary inputs
Power function
24 Vdc
ground
24 Vdc
ground
24 Vdc
ground
24 Vdc
ground
24 Vdc
ground
24 Vdc
ground
23