LX Series Unit Ventilator Controller User's Guide 69
The Output wizard can be launched from both the Unit Ventilator Controller
configuration wizard and from the Hardware Output Functional Block. Hardware
output could be used to control any equipment that is not related to the Unit
Ventilator Controller. To do so, configure the output with the actuator wizard
launched from the hardware output functional block. In the Unit Ventilator
Configuration wizard, leave the corresponding output UNASSIGNED. To control
that output, use the nviExtCmdOutputx.
Output Signal Types
Three possible output signals are available; output types are dependent upon which
output signals you select. A brief description of each of the types follows:
Digital - A signal that has only two states: ON and OFF.
Pulse Width Modulation (PWM) - A pulsed signal where the time duration of the
pulse, called the duty cycle, varies proportionally to the value transmitted. For
example, a larger duty cycle is translated as a larger value.
Analog - A signal that is continuous over its entire range of 0 to 10 volts.
Configuring an Output
To select and configure an output:
1. On the Output screen, numbers in the column Control Output correspond to the
output numbers. Click the drop-down arrow next to the control output number
that you want to configure.
MIN_FRESH_AIR_ENABLE Minimum fresh air intake enable output
ECONOMIZER_ENABLE Economizer enable output
HEAT_VALVE_OPEN Heating floating valve output, open command
HEAT_VALVE_CLOSE Heating floating valve output, close command
COOL_VALVE_OPEN Cooling floating valve output, open command
COOL_VALVE_CLOSE Cooling floating valve output, close command
HEAT_COOL_VALVE_OPEN Heating/cooling floating valve output, open command
HEAT_COOL_VALVE_CLOSE Heating/cooling floating valve output, close command
FAN_SPEED_MOD Fan control output, variable speed
HEATING_MOD Modulated heating control output
HEATING_VALVE_MOD Modulated heating valve output
COOLING_VALVE_MOD Modulated cooling valve output
HEAT_COOL_VALVE_MOD Modulated heating/cooling valve output
HUMIDIFIER_MOD Modulated humidifier control output
DEHUMIDIFIER_MOD Modulated dehumidifier control output
FRESH_AIR_DAMPER_MOD Modulated fresh air (economizer) damper control output
FRESH_AIR_DAMPER_OPEN Fresh air damper output, open command
FRESH_AIR_DAMPER_CLOSE Fresh air damper output, close command
Table 15: Output Selection and Description (Part 2 of 2)
Selection Output Description