Carmanah G Series User Manual page 65

The maximum output current of the LED driver is 1400mA.
The minimum output current of the LED driver is 20mA. AAA, ALC, and Night Dimming features
cannot bring LED current below this value.
As mentioned in the Flash Pattern section, 3 round beacons must be set to a Unison flash
pattern.
When programming intensity for RRFBs or ITE-compliant circular beacons, minimum current
settings must be applied. Contact Carmanah for guidance.
Night Dimming
Night Dimming sets the night intensity as a percentage of the programmed Intensity setting. It is set in 10% steps.
For no night dimming, this is set to 100%.
If using night dimming and your system must meet intensity compliance such as ITE or RRFB's
J595, ensure that a worst-case night dimming does not dim the fixtures below the required
current needed to achieve compliance.
Carmanah Night Dimming default is 30% for all fixtures except red beacons which are not dimmed at night per
FHWA.
Ambient Auto-Adjust
AAA automatically adjusts fixture intensity between 50% and 100% of the programmed Intensity setting
depending on ambient brightness. This reduces brightness on overcast days to prevent glare. AAA can be set
either on or off. When AAA is on, it reports a value from 1 to 10 corresponding to the instantaneous ambient light
level measured by the EMS photosensor. A reading of 1 means ambient light levels are ~1,000 lux and the
daytime intensity is currently being dimmed to 50%. A reading of 10 means ambient light levels are at least
27,000 lux and 100% daytime intensity is being applied.
With AAA on, the dim level value (1 – 10) is displayed in real time, so it is a good feature to use for
troubleshooting the photosensor operation. A flashlight can be used to shine bright light into the photosensor and
invoke a "10" value.
Carmanah Technologies Corp. | 250 Bay St, Victoria, BC V9A 3K5, Canada | 1.250.380.0052 |
G SERIES USER MANUAL
6.0 ENERGY MANAGEMENT SYSTEM PROGRAMMING
customerservice@carmanah.com
65
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