Binary Outputs; Primary Air Valve Binary Outputs; Heat And Fan Binary Outputs; Binary Output Overrides - Trane Tracer VV550 Installation, Operation And Maintenance Manual

Inputs and Outputs

Binary Outputs

Each Tracer® VV550/VV551 controller provides five binary outputs (see
binary outputs are load side-switching triacs. Each triac acts as a switch that either makes
or breaks the circuit between the load and ground.
Table 13.Binary output descriptions and wiring
Binary output
Primary air valve close
Primary air valve open
Heat 1
Heat 2
Heat 3 or Fan On/Off
Binary outputs controlling electric heat are always NO. Binary water valve outputs can
be configured as NO or NC. The factory-installed controller is correctly set up for each
factory-supplied binary output end device. When no device is connected to the output,
configure the controller output as not used.

Primary Air Valve Binary Outputs

The primary air valve close and open binary output control the modulating primary air
valve. The default minimum actuation drive time for the air valve is 0.5 seconds and the
minimum actuation time for the water valve is 0.5 seconds. The airflow is the calculated
airflow needed to control the zone temperature +/-2% of the configured nominal airflow.

Heat and Fan Binary Outputs

The heat outputs (Heat 1, Heat 2, and Heat 3) control reheat. Output Heat 3 may be
configured for heat or a fan (Fan ON/OFF). The heat outputs may be configured as:
•
•
•
The fan output can be configured as:
•
•

Binary Output Overrides

The controller includes a manual output test. The test overrides and manually exercises
all binary outputs in a defined sequence. For more information on manual output test,
refer to
22
Hot water ON/OFF control (NO or NC);
Hot water modulating (three-wire) valve control (open and close outputs are
predetermined);
Electric heat pulse width modulation (PWM) control (always NO).
Parallel ON/OFF control;
Series ON/OFF control.
"Manual Output Test," p.
Terminals Label
J1-3 Actuator
J1-4 Actuator
J9 Heat 1
J10 Heat 2
J11 Heat 3
10.
Table 13). The
Maximum
output rating
12 VA
12 VA
12 VA
12 VA
12 VA
CNT-SVX17G-EN