Trane Tracer AH540 User Manual

CNT-SVX05B-EN 15
Chapter 3
Input and Outputs
This chapter provides information about the function of inputs and out-
puts of the Tracer AH540/541 controller. The Tracer AH540 is configured
at the factory per unit configuration and order information. The field-
installed Tracer AH541 must be configured using a Rover service tool
(refer to the Rover Operation and Programming guide,
EMTX-SVX01E-EN, for more information).
Binary outputs
The Tracer AH540/541 controller has six binary outputs that are
assigned to the specific functions shown in Table 3.
The binary outputs are normally-open, form A relays. The relays act as a
switch by either completing or breaking the circuit between the load (the
end device) and the 24 Vac power. For example, when binary input BO1 is
energized, 24 Vac is supplied to terminal BO1, which in turn energizes
the supply fan start/stop relay (see Figure 8 on page 16).
Table 3. Binary output functions and locations
AH540 AH541
Function
Power
function
Maximum
output
ratingOutput
label
Terminal label
Factory
terminal
label
Field
terminal
label
BO1 TB21/1 OUT
TB21/2 GND
J21 BO1 Supply fan start/stop 24 Vac
ground
12 VA
BO2 TB22/1 OUT
TB22/2 GND
J22 BO2 Exhaust fan start/stop 24 Vac
ground
12 VA
BO3 TB23/1 OUT
TB23;2 GND
J23 BO3 DX stage 1 or electric stage 4 24 Vac
ground
12 VA
BO4 TB24/1 OUT
TB24/2 GND
J24 BO4 DX stage 2 or electric stage 3 24 Vac
ground
12 VA
BO5 TB25/1 OUT
TB25/2 GND
J25 BO5 DX stage 3 or electric stage 2 24 Vac
ground
12 VA
BO6 TB26/1 OUT
TB26/2 GND
J26 BO6 DX stage 4 or electric stage 1 24 Vac
ground
12 VA

Trane Tracer AH540 Specifications

General

Brand	Trane
Model	Tracer AH540
Category	Controller
Language	English