Attributes (CHW Pump Differential Pressure Setpoint Reset) - 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 CHW Pump Differential Pressure Setpoint Reset modules:

Table 1. CHW Pump Differential Pressure Setpoint Reset Attributes

Name

Type 1

Description

Default Value

Deadband

 

Provides an input, which is an area of a signal range or band where no action occurs.

12.0 kPa, 2.0 psi

Diff Pressure SP

 

Indicates the desired differential pressure setpoint for the building’s chilled water loop.

34.0 kPa, 5.0 psi

Enable

 

Provides the enable input, which allows the process to run.

False

Maximum dP Setpoint

 

Indicates the maximum value to which the differential pressure setpoint can be reset by the module.

276.0 kPa, 40.0 psi

Period

 

Indicates the time, in minutes, that the calculation executes.

5 minutes

Plant CHW Diff Pressure SP

G

Indicates the plant’s CHW differential pressure setpoint as determined by this module, based on the building chill water loop differential pressure error.

34.0 kPa, 5.0 psi

Process Variable

 

Provides the control differential pressure. The building chill water differential pressure may be connected to this input.

34.0 kPa, 5.0 psi

Stage Down Threshold

 

Indicates the amount that is subtracted from the current CHW Pressure setpoint when the building loop pressure is above setpoint.

13.0 kPa, 2.0 psi

Stage Up Threshold

 

Indicates the amount that is added to the current CHW Pressure setpoint when the building loop pressure is below setpoint.

34.0 kPa, 5.0 psi

Startup Value

 

Indicates the initial plant CHW differential pressure setpoint used in the off state.

20.0 kPa, 3.0 psi

State

 

Provides an output that represents the current module mode of operation.

Off

Set Name: Off/On/Hold

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