Primary States (Heating FBPD Proportional Valve with Low Limit) - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 16.0

Controller Tool Help
Product name
Controller Configuration Tool
Document type
User Guide
Document number
LIT-12011147
Version
16.0
Revision date
2023-10-02

  • Off: Turn everything off. The damper is 0% face, and the valve closes.

  • Max: Open the heating valve and the damper.

  • Hold: Hold the outputs at their current position.

  • Water Flush: The damper is 0% face, and the valve is opened to the Water Flush Position. Percent Cmd is set to 0 because this mode is not intended to provide heating (that is, should not transition from full open).

  • Limited Max: For valve control, the damper is 100% face, and the valve is opened to the Limited Max Value. For damper control, the valve is opened 100%, and the damper is opened to the Limited Max Value. This state may be used for unoccupied heating.

  • T Control: Modulate the controlled device to control the Process Variable. If the Process Variable is reliable, the module controls the output in order to maintain the Process Variable at the Setpoint.

  • LL-T Control: Modulate the controlled device to control the Limit Variable. If the Limit Variable is reliable, the module controls the output in order to maintain the Limit Variable at the Limit Setpoint.

  • Low OA Temperature: The valve is opened to the Low OA Temperature Position when the Protect-T is less than the Protect-Tsp.

  • Failsoft: For valve control, the damper is 100% face, and the valve is opened to the Failsoft Value. For damper control, the valve is opened 100%, and the damper is opened to the Failsoft Value. This state may be used when the control temperature is unreliable.

  • Low OA Temperature Startup: This mode activates the T Control state section, but limits the rate at which the valve can close so that the unit can safely come into control (typically used for 100% OA units with low OA temperatures at startup).

  • Remain In Control: Modulate the controlled device to control the Limit Variable to the Limit Setpoint. If the Limit Variable is reliable, the module controls the output in order to maintain the Limit Variable at the Limit Setpoint. This mode should only be used as a shutdown strategy to add energy to the duct when the fan is off. It should not be used for general temperature control.

Table 1. Heating FBPD Proportional Valve with Low Limit Command Hierarchies - 1

Local isReliable

Network isReliable

Local Switchover

Network Switchover

Valve in Control (State)

False

*

*

*

False

True

False

*

*

False

True

False

FPBD

False

Valve

True

True

*

True

Table 2. Heating FBPD Proportional Valve with Low Limit Command Hierarchies - 2

Low Limit Process Variable isReliable

OA Temperature isReliable

Valve in Control

PID Tuning Reset

Mode

State

*

*

*

*

Off

Off

*

*

*

*

Max

Max

*

*

True

*

T Control

T Control Valve

*

*

False

*

T Control

T Control Damper

*

*

True

*

LL-T Control

LL-T Control Valve

*

*

False

*

LL-T Control

LL-T Control Damper

*

*

*

Reset 1st PID

Hold

T Control Valve

*

*

*

Reset 2nd PID

Hold

T Control Damper

*

*

*

Reset 3rd PID

Hold

LL-T Control Valve

*

*

*

Reset 4th PID

Hold

LL-T Control Damper

*

*

*

*

Hold

Hold

*

*

*

*

Water Flush

Water Flush

*

*

True

*

Limited Max

Limited Max Valve

*

*

False

*

Limited Max

Limited Max Damper

*

True

*

*

Low OA Temperature

Low OA Temperature

*

False

*

*

Low OA Temperature

Failsoft Valve

*

*

True

*

Failsoft

Failsoft Valve

*

*

False

*

Failsoft

Failsoft Damper

*

*

True

*

Low OA Temperature Startup

T Control Valve

*

*

False

*

Low OA Temperature Startup

T Control Damper

True

*

*

*

Remain In Control

Remain In Control

False

*

*

*

Remain In Control

Failsoft Valve