DAYSIM Header File Keyword: Lighting Control

This input parameter characterizes the type of lighting system installed in the zone. The following lighting control scenarios are supported:

  •  manual on/off switch near the door (reference system): This lighting system corresponds to a standard manually controlled electric lighting system with a single on/off switch near the door. According to chapter 27 of the IESNA Lighting Handbook [1], this is the reference system relative to which the energy savings potential of automated controls should be expressed.
  • energy-efficient (off) occupancy sensor: This lighting system corresponds to the reference lighting system combined with a perfectly located occupancy sensor with a user-specified switch-off delay time. The lighting system can only be activated manually through the switch. It is switched off either manually by the user or automatically by the occupancy sensor. The occupancy sensor consumes a standby power of 3W when the lighting system is switched on.
  • on/off occupancy sensor: This lighting system corresponds to an automatically controlled lighting system with an ideally located occupancy sensor with a user-specified switch-off delay time. The occupancy sensor is permanently in standby mode and activates the lighting whenever occupancy is detected. The occupancy sensor permanently consumes a standby power of 3W. 
  • photosensor-controlled dimmed lighting system: This lighting system corresponds to an ideally commissioned, photosensor-controlled, dimmed lighting system. The photocell dims the activated lighting until the total work plane illuminance  (daylight & electric light) reaches the minimum illuminance threshold. At a minimum lighting output of 1% the system consumes 15% of its full electric power. The lighting is manually activated via a single on/off switch near the door. The photocell consumes a standby power of 2W.
  • dimmed lighting system with an energy-efficient occupancy sensor: This lighting system corresponds to an ideally commissioned, photosensor-controlled, dimmed lighting system combined with an on/off switch and a perfectly located occupancy sensor. The occupancy sensor has a user-specified switch-off delay time. The photocell dims the activated lighting until the total work plane illuminance (daylight & electric light) reaches the minimum illuminance threshold. At a minimum lighting output of 1% the system consumes 15% of its full electric power. The lighting system can only be activated manually through the switch. It is switched off either manually by the user or automatically by the occupancy sensor. The lighting control module  consumes a standby power of 5W when the lighting system is switched on.

[1] Illuminating Engineering Society of North America, The Lighting Handbook, (2000

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