BEMS Control Features
1. Optimum Start
Ensures the building is the proper temperature at occupancy time and no earlier, which is acheived by varying the switch on time according to the prevailing conditions inside & outside.
2. Optimum Stop
Allows the plant to be switched off before the end of normal time without loss of comfort to the staff.
3. Daytime Control
Zone control devices in the building will shut down part of a system when not required during occupancy. Continuous monitoring of the prevailing conditions will allow switch off when heating/cooling is not required particularly in Spring and Autumn.
4. Frost & Fabric Protection
Additional non-adjustable settings using the control temperature sensors will ensure minimum plant operation to protect the building under severe weather conditions.
5. Plant Sequencing
Multiple boiler and chiller plant should be off loaded as demand changes; rotation of duty is essential to equalise plant wear.
6. Lighting Control
Lighting should be controlled by both occupancy and light level sensors as well as being switched by time schedules.
7. Blind Control
Automatic blinds can be programmed to operate as the sun changes position and level due to the seasons.
8. Logging & Monitoring
The plant operation and building conditions should be monitored and recorded by the Control System, to provide the Energy Manager with the information for reporting to management and ensuring the best possible results.
9. Alarm Generation
When there is a plant malfunction this needs to be relayed to someone who is responsible for taking corrective action before the problem escalates. The timing and nature of a fault needs to be recorded by the BEMS which will aid investigation and correction of those faults which may develop during the unoccupied periods.