Load commanding - Metasys - LIT-12011953 - Server - Metasys UI

Load commanding - Metasys - LIT-12011953 - Server - Metasys UI - 7.0.50

Metasys UI Help

Product

Building Automation Systems > Graphics and Interfaces > Metasys UI

Document type

User Guide

Document number

LIT-12011953

Version

7.0.50

Revision date

2024-03-19

Product status

Active

Objects with a Load extension and intended for use with the DLLR feature permit the following operator or scheduled commands.

Table 1. Commands available to Load objects
Command	Parameters	Description
Shed	Type Percent, Level, or Amount Value New shed value	Sheds the load immediately. The output is written at priority 13 (LR) if the Shed Strategy is set to Load Rolling Only. Otherwise, it is written at priority 11 (DL). When this command is issued, the output is commanded regardless of whether DLLR is in Shed or Monitor Only mode. Select only the Level command and use the default value of 1. The Percent and Amount command options are intended for future use.
Release Load	None	Releases the load, which releases the command at the priority at which it was previously written by the shed command (11 or 13). The On Release attribute defined in the Load object determines whether the release occurs immediately when the command is issued, or waits for the Minimum Shed timer to expire.
Comfort Override	Release Immediately Release After Timer Expires	Releases a shed load that is resulting in occupant discomfort. This command releases the shed and prevents a future shed until the Release Comfort Override command is issued. You can either select to release the load immediately when the command is issued, or only after the Minimum Shed Timer expires. If no parameter is selected, the default is to release the load immediately.
Release Comfort Override	None	Releases the Comfort Override command and allows the load to be shed.
Lock	None	Locks the load in its current shed or released state. The load remains in this state until an Unlock (or Disable) command is issued.
Unlock	None	Releases a Lock command. If the load was locked shed and its Maximum Shed Time expired, it now releases.
Disable	None	Disables the load, which causes it to release its output command immediately if it is shed, and clears any Lock or Comfort Override commands that have been issued. While disabled, the load is not eligible to be shed.
Enable	None	Enables the load, which permits it to be controlled by DLLR.

The following table illustrates command interactions that pertain to Load objects.

Table 2. Load command interactions
Load command(s) currently in effect	Load command not allowed	Explanation
Shed	Shed	Load cannot be shed because it is already shed.
Shed + Locked	Comfort Override or Release Load	Lock must be removed with Unlock command.
Comfort Override	Shed	Comfort Override must be released with Release Comfort Override command.
Released + Locked	Shed	Lock must be removed with Unlock command.
Released + Locked and Comfort Override	Shed	Comfort Override must be released with Release Comfort Override command. Lock must be removed with Unlock command.