Instruction Manual
VLB-67 LED Beacon
© Vega Industries Ltd, July 2014
VLB-67 LED Beacon
Page 37 of 52
VLB-67 V1.0.17
Determine the power consumption for each flash
For the peak intensity F1 find the current
in Appendix A for the intensity value
above and below the value of F1
77Cd 155mA
54Cd 95mA
= G
Difference in current values in G
60mA
= H
Difference in Candela values in G
23Cd
= I
Lowest Candela value in G
54Cd
= J
Difference between F and J
8Cd
= K
Lowest current in G
95mA
= L
Current at F1 Candela =L+K*H/I
115.9mA
= M
Average current in Character
period=M*D1
6.95mA
= N1
Note: If the character has a multiple flash, repeat this calculation for each flash (N1, N2, N3 etc)
Determine energy need of light
Average current in Character
period=N1+N2 etc
6.95mA
=O
Night Off current with GPS (Appendix B)
4.5mA
=P
Time when light is off =B-(C1+C2 etc)
4.7 sec
=Q
Average current=O+P*Q/B
11.18mA
=R
Longest operating hours
14 hours
=S
Night energy usage=R*S/1000
0.157Ah
=T
Day current from Appendix B
0.3mA
=U
Day Energy Usage=(24-S)*U/1000
.003Ah
=V
Total energy used by light=T+V
0.16Ah
=Y
For VLB-67-SA Stand Alone unit the power source supplying the Beacon must be able to support
the load of the beacon as calculated above.
For VLB-67-SS/LS Solar Powered beacons it is necessary to ensure the Solar-energy available
and the battery capacity is sufficient to support the load of the Beacon.
