Specification for FADE/RAMP parameters
- Hi guys,
i was checking the dali-standard
Given the fact that DALI does most of the applications in Lighting I assume that similar ranges would be sufficient for 99% of the jobs.
Range is 0.7 to 90.5 seconds
=> therefore in BACnet 0.5 to 100 seconds with a resolution of 0.1s should be enough.
RAMP-RATE (Dali calls it FADE Rate)
Range is 2.8 to 358 steps/second
if we round that to 1 to 100 I get:
Range 1.1 to 140
=> I guess 1 to 140 with a resolution of 1 should be enough.
If a BACnet to DALI gateway is implemented:
Is it accurate enough to choose the closest DALI-FADE time?
in BACnet we specify 52s
is it ok if such a gateway is using either 45.3s or 64s?
These are the closest FADE-Times dali offers
do we mandate that such a Gateway will have to make shure, that the FADE-time really is 52s (+- 0.1s perhaps?)
If have not checked wheather such close tolerances are possible (in bussystems this might not be possible because of bandwith limitations when more than one fade should be executed simulatenously)
Fr. Sauter AG
Im Surinam 55, CH-4016 Basel
Telefon +41 (0)61 695 55 55
Telefax +41 (0)61 695 56 19
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Can you elaborate a bit on the intent of this proposal, and what the simplification is against what is in addendum 135-2010i?
Siemens Switzerland Ltd
Building Technologies Division
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