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Wiring the Universal Inputs
The
CBV-2U4-3T(-N)
through
are used for wiring in room sensors, set point adjust, discharge air sensors, CO₂ sensors,
U/I-4
relative humidity sensors, and motion sensors, depending on the application. The sequences for this wide
range of applications are available within the preloaded strategy. See
controller
on page 21 of this manual for selecting the sequence for specific applications.
•
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. All room sensors purchased from ABB are 10K Type III.
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 set point adjust is wired. This input is pre-configured to support
a 5K POT. All room sensors purchased from AAM are of this sensor type.
It is possible to fine tune the set point adjusts or to change it to support a 10K POT by changing analog
Note:
setpoints
SliderValAt_xx
List of CBV-2U4-3T(-N) points
•
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 supply air temperature sensor for auto changeover. See
Damper Control
•
U/I – 4 is configured as a voltage input. This input can be used for wiring in a CO
humidity sensor, or a motion sensor (must be a dry contact closure).
For CO₂ or relative humidity sensors it must be a 0
Note:
sensor that is installed, adjust the following:
UI04CO2SensorBase (A253)
o
UI04CO2SensorSpan (A254)
o
To adjust the span for the relative humidity sensor that is installed, adjust the following:
UI04SensorBase (A256)
o
UI04SensorSpan (A257)
o
IO POINTS
UI-01
Zone Temperature (with optional override button)
UI-02
Setpoint Adjustment (optional 5K slider)
UI-03
Discharge Temperature (optional)
UI-04
CO₂, Humidity, or occupancy signal (all optional)
UI-08
Flowrate Sensor
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Subject to change without notice
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comes with 5 universal inputs.
(A385
A389 e.g. SliderValAt_0) R/W to change the resistance table. See
...
on page 61 for details on changing these values.
on page 43 for more information on this feature.
Low range of sensor.
Total range of senor.
Low range of sensor.
Total range of senor.
DESCRIPTION
Installation Overview
CBV-2U4-3T(-N) |
is dedicated to the internal air flow sensor.
U/I-8
Configuring the CBV-2U4-3T(-N)
...
10 V DC sensor type. To change the span for the CO₂
U/I-1
Appendix :
Primary Air State and
sensor, relative
2
12
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