Effects of Schedule States in the Building

6 Minute Read

| Overview

75F BMS has introduced multiple schedule states in the system. The different schedule states are introduced with the core vision of energy savings and occupant comfort in the buildings.

The following are the schedule states that are introduced:

1. Unoccupied
2. Occupied
3. Preconditioning 
4. Forced Occupied
5. Vacation
6. Auto Force Occupied
7. Auto-away
8. Emergency Conditioning
9. Keycard Auto-Away
10. Demand Response Occupied
11. Demand Response Unoccupied
12. Door/ Window Open
13. No conditioning

For more information on the schedule, states refer to Schedules & Schedule States

The schedule states are implemented throughout the 75F BMS. The schedule states are applicable for all profiles that use the 75F CCU as an aggregator. 

| Schedule State Influencers

Influencers are nothing but factors that contribute to different schedule states' triggers.

Two types of influencers contribute to the schedule states' trigger.

• Internal 
• External

The table below is about different types of influencers:

	Types of Schedules Supported in 75F	Definitions
	Internal User Intent Set	The schedule user intents that are set by FMs, Support, End User
1	Building Schedule
2	Zone Schedule
3	Special Schedule
4	Named Schedule
5	Vacation [Building Level and Zone Level]
	External Schedule Influencers	Schedule Overrides that are influenced by external triggers
6	Occupancy Sensor
7	Keycard Input
8	Door/Window Input

 

| Precedence Hierarchy 

Based on whether the building is unoccupied or occupied time of the actual schedule. The precedence hierarchy of the schedule states and schedule state influencers differs.

The table below provides information on that.

Order	Priority Order	Precedence order during Occupied	Precedence order during Unoccupied
Highest	1	Demand Response Occupied	Demand Response Unoccupied
	2	Door/Window Input	Door/Window Input
	3	Keycard Input	Keycard Input
	4	Auto-away	Preconditioning
	5	Emergency Conditioning	Forced Occupied
	6	Occupied	Auto Forced Occupied
	7		Emergency Conditioning
	8		Vacation
Lowest	9		Unoccupied

 

Schedule States Precedence Order:

Order	Schedule States
Highest	Occupied
	Preconditioning
	Forced Occupied
	Auto Forced Occupied
	Emergency Conditioning
	Autoaway
Lowest	Unoccupied

 

| Schedule States & the Priority Levels

With the above hierarchy and precedence, the different schedule states and the influencers induce change to the desired temperatures at different level of the priority array as below.

Priority Array Level	Schedule States	Influencers
Level 3	Auto Away	Door/Window/ Key Card/ Occupancy sensor
Level 4	Forced Occupied/ Auto Forced Occupied	Door/Window/ Key Card/ Occupancy Sensor/ User Intent change
Level 8	Occupied/Unoccupied	Schedules (Building/Zone/Vacation)

From the above table:

• An Autoaway trigger induced by a door/window/key card/occupancy sensor, overrides desired temperature limits at level 8, coming from level 3 by the Autoaway setback value. 
• An Auto Forced Occupied trigger induced by a door/window/key card/occupancy sensor overrides the Auto away setback or building setback temperature limits at level 8, coming from level 3 to the desired temperature limits (e.g., 70-74)
• A Forced Occupied trigger induced by user intent, overrides the Auto away setback or building setback temperature limits at level 8, coming from level 3 to desired temperature limits (e.g., 70-74).
• The Occupied and Unoccupied are triggered with the set schedules at level 8

| Sample Illustration of Occupancy States from Portals

Illustration 1

Corresponding Enums (using custom widgets)

Note: The Demand Response state is not a part of the Enums and it sits above all states in terms of precedence.

Illustration 2

 

Corresponding Enums (using custom widgets)

Illustration 3

Corresponding Enums (using custom widgets)

Note: The Demand Response state is not a part of the Enums and it sits above all states in terms of precedence.

| Impact of Demand Response Event

The Demand Response Event is a new type of schedule state that is introduced within the 75F system. It was a result of the Demand Response Compliance feature.

It enables 75F CCUs to balance the demand on the power grid by encouraging them to shift electricity demand to times when demand on the electric grid is lesser.​ For more information on demand response refer to Demand Response Compliance.

The Demand Response Event sits above all influencers of scheduled states.

Demand Response once triggered from the utility will be acted on top of the current state of the zone, shedding more load which it was demanding at that period of time.

The influence is reflected in the status message for the Zone, where the actual schedule state influence is appended with the Demand Response, as below.

The desired temperatures drift further away in the arc to meet the demand response requirements as below.

Note: The actual schedule state influence is still intact in the status message.

| Important points to remember

• Door/Window Sensor input will not affect the system level functioning, but the individual Standalone Equipment alone.
• Auto-away and auto-forced Occupied are not triggered at the same time.
• Auto-away is not triggered during an unoccupied time.
• Forced Occupied or Auto forced occupied are not triggered during the occupied time.

| Different Zone Level Schedule States and Effects on System Level/Building Level Schedule State

A building can have many rooms configured as zones in the 75F BMS. With all schedule states and schedule state influencers in place, it is highly unpredictable, what zone is in what schedule state and what time. Hence it is highly recommended that a facility manager understands how various combinations of the schedule states affect the building in real-time. 

The table below is about various possible combinations of schedule states that zones in the building can experience at any given point of time, and the resultant effect of it on the building.

Zone 1	Zone 2	Zone 3	Zone 4	Zone 5	Zone 6	System Status
Unoccupied	Occupied	Occupied	Occupied	Occupied	Occupied	Occupied
Unoccupied	Occupied	Occupied	Occupied	Occupied	Occupied	Occupied
Unoccupied	Unoccupied	Occupied	Occupied	Occupied	Occupied	Occupied
Unoccupied	Unoccupied	Unoccupied	Occupied	Occupied	Occupied	Occupied
Unoccupied	Unoccupied	Unoccupied	Unoccupied	Occupied	Occupied	Occupied
Unoccupied	Unoccupied	Unoccupied	Unoccupied	Unoccupied	Occupied	Occupied
Unoccupied	Unoccupied	Unoccupied	Unoccupied	Unoccupied	Unoccupied	Unoccupied
Forced Occupied	Unoccupied	Unoccupied	Unoccupied	Unoccupied	Occupied	Occupied
Forced Occupied	Occupied	Occupied	Unoccupied	Unoccupied	Unoccupied	Occupied
Forced Occupied	Forced Occupied	Occupied	Occupied	Unoccupied	Unoccupied	Occupied
Forced Occupied	Forced Occupied	Forced Occupied	Occupied	Occupied	Occupied	Occupied
Forced Occupied	Forced Occupied	Forced Occupied	Forced Occupied	Occupied	Occupied	Occupied
Forced Occupied	Forced Occupied	Forced Occupied	Forced Occupied	Forced Occupied	Occupied	Occupied
Forced Occupied	Forced Occupied	Forced Occupied	Forced Occupied	Forced Occupied	Forced Occupied	Forced Occupied
Auto Forced Occupied	Occupied	Occupied	Occupied	Occupied	Occupied	Occupied
Auto Forced Occupied	Occupied	Occupied	Occupied	Unoccupied	Unoccupied	Occupied
Auto Forced Occupied	Auto Forced Occupied	Occupied	Occupied	Occupied	Occupied	Occupied
Auto Forced Occupied	Auto Forced Occupied	Auto Forced Occupied	Occupied	Occupied	Occupied	Occupied
Auto Forced Occupied	Auto Forced Occupied	Auto Forced Occupied	Auto Forced Occupied	Occupied	Occupied	Occupied
Auto Forced Occupied	Auto Forced Occupied	Auto Forced Occupied	Auto Forced Occupied	Auto Forced Occupied	Unoccupied	Auto Forced Occupied
Auto Forced Occupied	Auto Forced Occupied	Auto Forced Occupied	Auto Forced Occupied	Auto Forced Occupied	Auto Forced Occupied	Unoccupied
Vacation	Occupied	Occupied	Occupied	Occupied	Occupied	Occupied
Vacation	Occupied	Occupied	Occupied	Occupied	Occupied	Occupied
Vacation	Vacation	Occupied	Occupied	Occupied	Occupied	Occupied
Vacation	Vacation	Vacation	Occupied	Occupied	Occupied	Occupied
Vacation	Vacation	Vacation	Vacation	Occupied	Occupied	Occupied
Vacation	Vacation	Vacation	Vacation	Vacation	Unoccupied	Unoccupied
Vacation	Vacation	Vacation	Vacation	Vacation	Vacation	Vacation
Preconditioning	Occupied	Occupied	Occupied	Occupied	Occupied	Occupied
Preconditioning	Occupied	Occupied	Occupied	Occupied	Occupied	Occupied
Preconditioning	Preconditioning	Occupied	Occupied	Occupied	Occupied	Occupied
Preconditioning	Preconditioning	Preconditioning	Occupied	Occupied	Occupied	Occupied
Preconditioning	Preconditioning	Preconditioning	Preconditioning	Occupied	Occupied	Occupied
Preconditioning	Preconditioning	Preconditioning	Preconditioning	Preconditioning	Occupied	Occupied
Preconditioning	Preconditioning	Preconditioning	Preconditioning	Preconditioning	Preconditioning	Preconditioning
Preconditioning	Occupied	Vacation	Occupied	Occupied	Occupied	Occupied
Autoaway	Occupied	Occupied	Occupied	Occupied	Occupied	Occupied
Keycard Autoaway	Preconditioning	Occupied	Occupied	Occupied	Occupied	Occupied
Door Open	Autoaway	Forced Occupied	Occupied	Occupied	Occupied	Occupied
Forced Occupied	Keycard Autoaway	Preconditioning	Autoaway	Occupied	Occupied	Occupied
Preconditioning	Door Open	Preconditioning	Keycard Autoaway	Auto Forced Occupied	Occupied	Occupied
Vacation	Unoccupied	Vacation	Door Open	Preconditioning	Auto Forced Occupied	Occupied
Autoaway	Occupied	Occupied	Occupied	Occupied	Occupied	Occupied
Autoaway	Occupied	Door Open	Preconditioning	Keycard Autoaway	Occupied	Occupied
Autoaway	Autoaway	Occupied	Door Open	Preconditioning	Keycard Autoaway	Occupied
Autoaway	Autoaway	Autoaway	Occupied	Occupied	Occupied	Occupied
Autoaway	Autoaway	Autoaway	Autoaway	Occupied	Occupied	Occupied
Autoaway	Autoaway	Autoaway	Autoaway	Autoaway	Occupied	Occupied
Autoaway	Autoaway	Autoaway	Autoaway	Autoaway	Autoaway	Autoaway
Keycard Autoaway	Occupied	Occupied	Occupied	Occupied	Occupied	Occupied
Keycard Autoaway	Occupied	Occupied	Door Open	Preconditioning	Keycard Autoaway	Occupied
Keycard Autoaway	Keycard Autoaway	Occupied	Occupied	Occupied	Occupied	Occupied
Keycard Autoaway	Keycard Autoaway	Keycard Autoaway	Occupied	Occupied	Occupied	Occupied
Keycard Autoaway	Keycard Autoaway	Keycard Autoaway	Keycard Autoaway	Occupied	Occupied	Occupied
Keycard Autoaway	Keycard Autoaway	Keycard Autoaway	Keycard Autoaway	Keycard Autoaway	Occupied	Occupied
Keycard Autoaway	Keycard Autoaway	Keycard Autoaway	Keycard Autoaway	Keycard Autoaway	Keycard Autoaway	Keycard Autoaway
Door Open	Occupied	Occupied	Occupied	Occupied	Occupied	Occupied
Door Open	Occupied	Door Open	Preconditioning	Keycard Autoaway	Occupied	Occupied
Door Open	Door Open	Occupied	Door Open	Preconditioning	Keycard Autoaway	Occupied
Door Open	Door Open	Door Open	Occupied	Occupied	Occupied	Occupied
Door Open	Door Open	Door Open	Door Open	Occupied	Occupied	Occupied
Door Open	Door Open	Door Open	Door Open	Door Open	Occupied	Occupied
Door Open	Door Open	Door Open	Door Open	Door Open	Door Open	Occupied
Emergency Conditioning	Occupied	Occupied	Occupied	Occupied	Occupied	Emergency Conditioning
Emergency Conditioning	Occupied	Door Open	Preconditioning	Keycard Autoaway	Occupied	Emergency Conditioning
Emergency Conditioning	Door Open	Occupied	Door Open	Preconditioning	Keycard Autoaway	Emergency Conditioning
Emergency Conditioning	Door Open	Door Open	Occupied	Occupied	Occupied	Emergency Conditioning
Emergency Conditioning	Door Open	Door Open	Door Open	Occupied	Occupied	Emergency Conditioning
Emergency Conditioning	Door Open	Door Open	Door Open	Door Open	Occupied	Emergency Conditioning
Door Open	Emergency Conditioning	Preconditioning	Keycard Autoaway	Keycard Autoaway	Occupied	Emergency Conditioning

| Impact of Multi-Module

Multi-module is a state when more than one device or profile is paired within a zone, the 75F system supports up to 3 modules (Device/ profile) (System influenced / Standalone) to be paired within a zone.

At any point in time in a multi-module zone, all the modules within the zone will have the same schedule state, and the same is indicated on the zone level.

In CCU

In Portals

Any external schedule influencers once triggered will be influencing the entire zone, irrespective of whether the other modules are enabled via configuration for that state.

Once the schedule state is consumed by the zone from the module of the highest rank in the multimodule, then the desired temperatures are inherited by other modules in the multimodule zone.

The table below is about various possible combinations of schedule states that a multi-module zone in the building can experience at any given point of time, along with the zone status and Desired temperatures.

Scenario	Module 1	Module 1	Module 2	Module 2	Module 3	Module 3	Zone	Zone
	State	Desired Temperature	State	Desired Temperature	State	Desired Temperature	State	Desired Temperature
Initial	Occupied	70/74	Occupied	70/74	Occupied	70/74	Occupied	70/74
Trigger	Door/Window Open	70/74(Stop conditioning)	Occupied	70/74	Occupied	70/74	Door/Window Open	70/74 (Stop conditioning)
Result	Door/Window Open	70/74(Stop conditioning)	Door/Window Open	70/74(Stop conditioning)	Door/Window Open	70/74(Stop conditioning)	Door/Window Open	70/74(Stop conditioning)
Trigger	Keycard AutoAway	68/76	Occupied	70/74	Occupied	70/74	Keycard AutoAway	68/76
Result	Keycard AutoAway	68/76	Keycard AutoAway	68/76	Keycard AutoAway	68/76	Keycard AutoAway	68/76
Trigger	AutoAway	68/76	Occupied	70/74	Occupied	70/74	AutoAway	68/76
Result	AutoAway	68/76	AutoAway	68/76	AutoAway	68/76	AutoAway	68/76
DR Active	DR Occupied	66/78	DR Occupied	66/78	DR Occupied	66/78	DR Occupied	66/78

 

Note: A CCU operates according to a time zone that is set during the CCU registration process. If there are any changes to the time zone, the set schedule will be altered according to the time zone set. Therefore, it is recommended to restart the application whenever the time zone is modified to ensure the schedule remains accurate and the system functions correctly.