The following table describes the attributes used by the Fan Supply Duct Static Control modules.
|
Name |
Description |
Default Value |
|
|---|---|---|---|
|
Duct Static Pressure |
Supply air duct static pressure. |
250 Pa, 1 in. W.C. |
|
|
Duct Static Pressure Setpoint |
Normal supply air duct static pressure setpoint. |
250 Pa, 1 in. W.C. |
|
|
Emergency Duct Static Setpoint |
Contains the supply air duct static pressure setpoint when Emergency S-P control is activated. |
374 Pa, 1.5 in. W.C. |
|
|
FSCS SF Cmd |
Accepts a command from the FSCS and allows emergency response personnel to control the supply fan. Possible states are Auto, Off, and On. |
Auto Set Name: Auto/Off/On |
|
|
Mode |
Desired mode of operation. |
Off Set Name: AHU SF Control |
|
|
Process Units |
Specifies the units for the PID. For this particular module, Pa, in. W.C., Psi, and kPa are valid values. |
Pa, in. W.C. Set Name: Unit |
|
|
Ramp Rate |
Defines the rate of change in fan speed. This input is used in the Ramp mode. |
50 Change per Minute |
|
|
SF-OUTSTATE (State) |
V, G |
Indicates the current operational mode of the output controller. |
Off Set Name: AHU SF State |
|
Supply Fan Control Status |
V |
PID Status. The possible values are Normal, Overridden, Disabled, Low, Timing Low, High, and Timing High. |
Normal Set Name: Control Status; |
|
Supply Fan OnOff |
V |
Contains the control signal for the supply fan. The enumeration set only has two values, Off and On. |
Off Set Name: Off/On |
|
Supply Fan Percent Cmd |
V |
Analog signal for the supply fan and uses it to command a fan speed. This output ranges from 0% to 100%. |
0.0% |