Attributes (Fan Return or Exhaust Tracking) - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 16.0

Controller Tool Help

Brand
Johnson Controls
Metasys
Product name
Controller Configuration Tool
Document type
User Guide
Document number
LIT-12011147
Version
16.0
Revision date
2023-10-02
Language
English

The following table describes the attributes used by the Fan Return or Exhaust Tracking modules.

Table 1. Fan Return or Exhaust Tracking Attributes

Name

Type 1

Description

Default Value

EF-EFRSTHI or RF-RFRSTHI (Return Fan High)

 

Desired return fan speed when the supply fan is at its high calibration point. This input is used in the Fan Track mode. It is used to scale the Supply fan command so the return fan moves the desired amount of air.

100%

EF-EFRSTLO or RF-RFRSTLO (Return Fan Low)

 

Desired return fan speed when the supply fan is at its low calibration point. This input is used in the Fan Track mode. It is used to scale the Supply fan command so the return fan moves the desired amount of air.

0%

EF-OUTSTATE or RF-OUTSTATE (State)

V, G

Indicates the current operational mode of the output controller.

Off

Set Name: AHU RF Track

EF-SFRSTHI or RF-SFRSTHI (Supply Fan High)

 

Supply fan high flow calibration point. This input is used in the Fan Track mode. It is used to scale the Supply fan command so the return fan moves the desired amount of air.

100%

EF-SFRSTLO or RF-SFRSTLO (Supply Fan Low)

 

Supply fan low flow calibration point. This input is used in the Fan Track mode. It is used to scale the Supply fan command so the return fan moves the desired amount of air.

0%

Mode

 

Desired mode of operation.

Off

Set Name: AHU RF Track

Return 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

Return Fan OnOff

V

Contains the control signal for the return fan.

Off

Set Name: Off/On

Return Fan Percent Cmd

V

This output is the analog signal for the return fan, it is used to command a fan speed. This output can range from 0% to 100%.

0%

Supply Fan Percent Cmd

 

Analog signal from the supply fan.

0%

1 C - Configuration Mode Only, G - Default Element (Generated State, if applicable), SC - Simulation and Commissioning Modes Only, V - Calculated Value (Outputs)