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Wiring the Digital and Analog Outputs
Both
CBV-2U4-3T
analog outputs) for controlling a wide variety of possible elements of the VAV box. In addition the
3T-N
comes with 2 digital outputs for damper control (accessed by removing the top cover), and the
2U4-3T
includes integrated damper control. It is possible to control single speed and variable speed fans
(both parallel and series), electric heat (optional pulse width modulation), proportional heating valves, and
tri-state heating valves depending on the application.
•
DO-11 can be configured for controlling first stage electric heat (on-off or pulse width modulation
optional), or to open a tri-state heating valve.
•
DO-12 can be configured for controlling second stage electric heat (on-off or pulse width modulation
optional), or to close a tri-state heating valve.
•
DO-13 can be configured for controlling third stage (on-off or pulse width modulation optional), or to
control a single speed fan (series or parallel).
Note: It is also possible to define
Both
and
AO-15
•
AO-14 can be configured for controlling any first stage modulating heating valves,
Controlled
Rectifier), or
elements of the VAV box.
•
AO-15 can be configured for controlling any second stage modulating heating valves, SCR
Controlled
Rectifier), or
elements of the VAV box. This output can also be configured for variable speed fan control (series or
parallel).
and
are preconfigured as a 0
Note:
AO-14
AO-15
possible to configure either output or both outputs for reverse acting or 10
of these outputs can also be configured for 2
the
s can now be configured for reverse acting.
DO
IO POINTS
DO-09
Damper Open/Close CBV-2U4-3T-N ONLY
DO-10
Damper Close/Open CBV-2U4-3T-N ONLY
DO-11
1
DO-12
2
DO-13
3
AO-14
1
2
AO-15
Parallel)
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and
CBV-2U4-3T-N
come with 3 digital outputs and 2 UniPuts™ (normally configured as
as a start command for a variable speed fan (series or parallel).
DO-13
must be configured as either series or parallel for this feature.
DO-13
EMC (Electronic Modulating
EMC (Electronic Modulating
...
st
Stage Electric Heat (optional PWM) or Tri-State Heat Valve Open
nd
Stage Electric Heat (optional PWM) or Tri-State Heat Valve Closed
rd
Stage Electric Heat (optional PWM) or Fan Command (Series or Parallel)
st
Stage Modulating Heat Control
nd
Stage Modulating Heat Control or Variable Fan Speed Control (Series or
CBV-2U4-3T(-N) |
Control) type controls depending on the heating
Control) type controls depending on the heating
10 V dc direct acting output. During configuration it is
...
10 V dc or 10
...
2 V dc. In
DESCRIPTION
Installation Overview
CBV-2U4-
SCR (Silicone
...
0 V dc. Either or both
CBV-2U4-3T-N
controllers
CBV-
(Silicone
16
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