Wiring Analog and Digital Outputs
FBVI-2U4-4T has 4 digital outputs and 2 UniPuts™ (normally configured as analog outputs) for
controlling a wide variety of possible elements of the VAV box. The FBVI-2U4-4T includes integrated
damper control. It is possible to control single speed and variable speed fans (both parallel and series),
electric heat, proportional heating valves, and tri-state heating valves depending on the application.
• DO-09 can be configured for controlling first stage on-off electric heat or to open a tri-state
heating valve.
• DO-10 can be configured for controlling the second stage on-off electric heat or to close a tri-state
heating valve.
• DO-11 can be configured for controlling third stage on-off control.
• DO-12 can be configured for constant volume series or parallel fan on-off control.
• AO-14 can be configured for controlling any first stage modulating heating valves, SCR (Silicon
Controlled Rectifier), or EMC (Electronic Modulating Control) type controls depending on the heating
elements of the VAV box.
• AO-15 can be configured for controlling any second stage modulating heating valves, SCR (Silicon
Controlled Rectifier), or EMC (Electronic Modulating Control) type controls depending on the heating
elements of the VAV box. This output can also be configured for variable speed fan control (series
or parallel).
Note: AO-14 and AO-15 are preconfigured as a 0
…
10 V DC direct-acting output. During configuration,
it is possible to configure either output or both outputs for reverse acting or 10
…
0 V DC. Either
or both of these outputs can also be configured for 2
…
10 V DC
or 10
…
2 V DC.
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