Attributes (Fan RF or EF Vol Match for UL-864-UUKL) - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 15.0

Controller Tool Help

Brand
Johnson Controls
Metasys
Product name
Controller Configuration Tool
Document type
User Guide
Document number
LIT-12011147
Version
15.0
Revision date
2022-11-18
Language
English

The following table describes the attributes used by the Fan RF or EF Vol Match for UL-864-UUKL modules.

Table 1. Fan RF or EF Vol Match for UL-864-UUKL Attributes

Name

Type 1

Description

Default Value

EF-OUTSTATE or RF-OUTSTATE (State)

V, G

Indicates the current operational mode of the output controller. This output is the current state of the activity.

Off

Set Name: AHU RF VOL State UL

Emergency On Percent Cmd

 

Indicates the Percent Cmd issued to the fan if an emergency calls for the Return Fan to run and the Supply Fan is Off.

70%

FSCS RF Cmd

 

Accepts a command from the FSCS, and allows emergency personnel to control the return fan.

Auto

Set Name: Auto/Off/On

Low Limit Process Variable

 

Low limit temperature process variable. This temperature is usually the mixed air temperature or the preheat air temperature.

7 °C, 45 °F

Low Limit Proportional Band

 

Defines the temperature range where the flow differential setpoint is reset to control the low limit process variable to the low limit temperature setpoint.

5 °C, 9 °F

Low Limit Setpoint

 

Contains the upper threshold for the low limit process function. When the low limit process variable is above this temperature, the return fan may be modulated to maintain the desired flow differential between the supply duct and the return duct. Below this setpoint, outdoor air levels may be limited by resetting the differential flow setpoint.

7 °C, 45 °F

Mode

 

Contains the desired mode of operation.

Off

Set Name: AHU RF VOL Mode UL

Output Overridden

 

Indicates when the actual output controlled by this output is overridden by a user.

False

Output Position

 

Provides the current Present Value of the output that this controller drives.

0%

PID Tuning Reset

 

Causes the PID objects to reset their tuning parameters to the default based on the appropriate Process ID.

Normal

Set Name: PID Tuning Reset

Priority

 

Specifies the BACnet priority for the output points. For normal control, this value is set to 16 (Default). This value is set to 1 when the FSCS input is not Auto and set to 2 (Automatic Fire/Life Safety Control) when the Mode indicates an emergency is not Normal.

16

Process Units

 

Allows the user to define the units for the process.

l/s, cfm

Set Name: Unit

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

On/off signal for the return fan.

Off

Set Name: Off/On

Return Fan Percent Cmd

V

Contains the analog signal for the return fan used to command fan speed. This output can range from 0% to 100%.

0.0%

Return Flow

 

Return airflow.

10000 l/s, 22000 cfm

Supply Fan Percent Cmd

 

Contains the analog signal from the supply fan used in the Failsoft mode.

0.0%

Supply Fan State

 

Indicates the current state of operation for the supply fan. During an emergency mode, this value determines whether the fan is running.

Off

Supply Flow

 

Discharge airflow.

10000 l/s, 22000 cfm

Vol Process Range

 

Specifies the magnitude of the range that the PID Process Variable traverses as the PID Present Value varies between its minimum and maximum values. For example, the process range should be configured to be the design flow of the return fan.

10000 l/s, 22000 cfm

Volume Diff Setpoint

 

Contains the volume differential (Supply Flow - Return Flow or Supply Flow - Exhaust Flow) setpoint.

0 l/s, 0 cfm

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