Wiring The Io - ABB FBVi-2U4-4T User Manual

WIRING THE IO

Wiring the Universal Inputs
The FBVI-2U4-4T comes with 5 universal inputs.
through is used for wiring in-room sensors, setpoint adjust, discharge air sensors, CO₂ sensors,
U/I-4
relative humidity sensors, window, and motion sensors, depending on the application. The sequences
for this wide range of applications are available within the preloaded strategy.
•
U/I – 1 will typically be where the room temperature sensor is wired. This input is pre-configured to
support a 10K Type III thermistor.
Room sensors that short the thermistor for push-button occupancy are supported with this controller.
Note:
•
U/I – 2 will typically be where the room setpoint adjusts is wired. This input is pre-configured to
support a 5K POT. It can also be set up for an occupancy sensor or window sensor.
•
U/I – 3 is a dedicated input that has been configured to read a thermistor. In the pre-loaded
strategy, this input is used for a discharge air temperature sensor.
•
U/I – 4 is configured as a voltage input. This input can be used for wiring in a CO₂ sensor or relative
humidity sensor. It can also be set up for an occupancy sensor, window sensor, or a VAV fan
status.
For CO₂ or relative humidity sensors it must be a 0
Note:
sensor that is installed, adjust the following:
minCO2Range (A278)
o
maxCO2Range (A280)
o
To adjust the span for the relative humidity sensor that is installed, adjust the following:
minHumidityRange (A251)
o
maxHumidityRange (A305)
o
IO POINTS
UI-01 Zone Temperature (with optional override button) occupancy, or window contact
(all optional)
UI-02 Setpoint Adjustment (optional 5K slider) occupancy, or window contact (all
optional)
UI-03 Discharge Temperature
UI-04 CO₂, Humidity, occupancy, fan status, or window contact (all optional)
UI-08 Flowrate Sensor
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is dedicated to the internal airflow sensor.
U/I-8
... 10 Vdc sensor type. To change the span for the CO₂
Low range of the sensor.
High range of senor.
Low range of the sensor.
High range of senor.
DESCRIPTION
Installation
FBVi-2U4-4T |
U/I-1
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