Attributes (Humidification Scrubber Output) - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 13.1

Controller Tool Help

Brand
Johnson Controls
Metasys
Product name
Controller Configuration Tool
Document type
User Guide
Document number
LIT-12011147
Version
13.1
Revision date
2019-12-04
Language
English

The following table describes the attributes used by the Humidification Scrubber Output modules.

Table 1. Humidification Scrubber Output Attributes

Name

Type 1

Description

Default Value

Basin Drain Enable

 

Disables the timed activation of the basin drain.

True

Basin Fill Time

 

Indicates the amount of time it takes to fill the basin.

15 Minutes

Compensator Humidity Cmd

 

Controls the humidifier valve. The valve is commanded from 0% to 100%. This output incorporates the Lead Compensator.

0.0

Display Units: %

Control Band

V

Control band for the MSC.

5.0% RH

Discharge Humidity

 

Contains the process variable when the activity operates in the H Control mode.

70.0% RH

Discharge Humidity Setpoint

 

Contains the desired process variable setpoint when the activity operates in the Limited H Control mode.

70.0% RH

Drain Basin

 

Provides a Network Input to initiate basin drain process.

False

Drain Delay Time

 

Indicates the amount of time the pump output must be off before the basin drains.

24 Hours

Drain Valve

 

Provides the output for the drain valve.

Close

Set Name: Close/Open

Eff Minimum Off Time

V

Contains the minimum off time used by the MSC.

120 Seconds

Eff Minimum On Time

V

Contains the minimum on time used by the MSC.

120 Seconds

Eff Process Time Const

V

Contains the effective process time constant used by the MSC.

720 Seconds

Eff Process Variable

V

Process variable to be used by the MSC.

22.0% RH

Fill Valve

 

Provides the output for the fill valve.

Open

Set Name: Close/Open

Humidity Control Status

V

Current status of the humidification controller.

Normal

Set Name: Control Status

Humidity Enable

 

Turns on the scrubber pump.

Off

Set Name: Off/On

Humidity Process ID

 

Defines the type of process being controlled. This input must be set to either zone humidity or return humidity depending on the actual process.

RA-H

Set Name: Process ID

Humidity Process Variable

 

Provides the process variable when the activity operates in the H Control mode. This attribute is used for either the return air humidity or the zone air humidity.

40.0% RH

Humidity Setpoint

 

Contains the desired process variable setpoint when the activity operates in the H Control mode.

40.0% RH

HUM-MINOFF (Minimum Off Time)

 

Min Off Duration for all stages.

120 Seconds

HUM-MINON (Minimum On Time)

 

Min On Duration for all stages.

120 Seconds

HUM-O (Humidity Percent Cmd)

V

Contains a representative analog percent output on a scale of 0% to 100%. This output should be connected to the humidification control device.

0.0%

HUM-OUTSTATE (State)

G, V

Contains the current operational mode of the output controller.

Off

Set Name: AHU Hum Staged

Instant Shutdown

 

Contains the indication to the MSC to shut all outputs off instantly.

False

Mode

 

Mode of operation.

Off

Set Name: AHU Hum Staged

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

PMAC Period

V

Period used by the PMAC algorithm portion of the MSC.

24 Seconds

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