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EOF Calculator

Required Information

In order to choose the appropriate ELEDD MIDI for a conversion project, certain values will need to be determined beforehand. You can use the below EOF Calculator to help you to work out the LED Emergency Output Factor (EOF).

Approx. Emergency Power
* Required
Input Power
* Required
Want A More Accurate Calculation?

The following information is useful when choosing an emergency conversion module: 1. Luminaire Input Power, 2. Emergency Output Factor (EOF) when driving an entire LED array, 3. LED parameters of the luminaire and 4. Luminous flux (lumens) required in emergency operation. It is likely that you will not have all of this information so, this handy calculator will help you in choosing the most appropriate product for your needs, based on the information you have available. The more information you input, the more accurate your calculation will be. Simple!

Least Accurate

Look at this section to determine a more accurate emergency BLF for conversion of a partial LED array, based on calculations that determine the emergency flux from a specific set of figures including module performance, and lamphead voltage/current/flux characteristics in mains mode.

Lamphead Power
* Required
Calculate EOF
More Accurate

Look at this section to determine a more accurate emergency BLF for conversion of a partial LED array, based on calculations that determine the emergency flux from a specific set of figures including module performance, and lamphead voltage/current/flux characteristics in mains mode.

Lamphead VF - Volts (V)
* Required
Lamphead IF - Amps (A)
* Required
Calculate EOF
Most Accurate
(Entire LED Array Conversion)

Look at this section to determine a more accurate emergency BLF for conversion of a partial LED array, based on calculations that determine the emergency flux from a specific set of figures including module performance, and lamphead voltage/current/flux characteristics in mains mode .

Emergency LED Current

This figure is determined by taking data from the corresponding ELEDD MIDI product datasheet. Read from the graphs of emergency LED current based on connected emergency lamphead VF.

* Required
Lamphead VF - Volts (V)
* Required
Lamphead IF - Amps (A)
* Required
Mains Flux
* Required
Calculate EOF
Most Accurate
(Partial LED Array Conversion)

Look at this section to determine a more accurate emergency BLF for conversion of a partial LED array, based on calculations that determine the emergency flux from a specific set of figures including module performance, and lamphead voltage/current/flux characteristics in mains mode.

Emergency LED Current

This figure is determined by taking data from the corresponding ELEDD MIDI product datasheet. Read from the graphs of emergency LED current based on connected emergency lamphead VF.

* Required
Emergency Lamphead VF - Volts (V)
* Required
Lamphead VF - Volts (V)
* Required
Lamphead IF - Amps (A)
* Required
Mains Flux
* Required
Calculate EOF
Back to Start

Emergency Flux :

Emergency BLF :

Back to Start

* Note: This calculator is provided as a guide. Please consult the relevant product documentation to ensure compatibility, or contact mackwell for further information.