|
Technology
Power Line Communication
modem
embedded in the IDC2000 : vs. DALI
PLC-Link© Communication Method vs. DALI
The
Embedded PLC modem PLC-Link©, supplies exclusively fast and
reliable two-way communication between any network devices over
Power Line, without any additional wiring.
| Comparison
between DALI and Systel PLC Communication Method using PLC-Link™
Protocol |
| Comparison
Parameter |
DALI
|
Systel's
PLC-link™
|
| Physical
layer |
Two
control wires
|
Power
line carrier
|
| Requires
rewiring in retrofit |
Yes
|
No
|
| Communication
method |
Bi
phase
|
Direct
Series Spread Spectrum
|
| Two
way |
Yes
|
Yes
|
| Implementation |
A
stand-alone light control
system or a “room” level
component of a building system
|
Floor
or wide area network of a BMS or as a stand-alone network
for Light control, HVAC, Security, Fire protection and
other environmental applications, as well as, for residential
network control system for same applications.
|
| Bandwidth |
N/A
|
100
- 200 kHz carrier frequency
|
| Bit
rate |
1200
bit/sec
|
2000-4000
bit/sec
|
| Message
length |
16
bits
|
32
bits
|
Addressable
ballasts
individually |
64
|
256
|
| Addressable
zones |
16
|
4096
|
| Light
scene storage |
16
scenes per controller
|
16
scenes per zone
|
| Broadcast
addressing |
Yes
|
Yes
|
| Lighting
curve |
Logarithmic
|
Can
be defined by customer
|
| RF
communication for remote control |
By
external add-on
|
Inherent
in the controller
together with the PLC
|
| Sensors
connected to: |
If
connected to Main DALI Controller, require long dedicated
wiring
|
Sensors
connected to the nearest Local Control Unit (Wall Control)
or to the nearest ballast that comprises Local Control
Unit capabilities. This option also saves the installation
of the Wall control
|
| Bi
directional protocol |
Yes
|
Yes
|
| Communication
Protocol type |
DALI
|
PLC-Link™
Systel property -
anti-collision type
|
| Error
Code Correction (ERCC) NA |
N/A
|
Yes
|
| Bit
Error Rate @ S/N= 6 dB before ERCC |
N/A
|
10-10
(for 64 ballast per circuit)
|
Erroneous
commands
probability at S/N = 6 after ERCC |
N/A
|
2*10-18
|
| Local
ID |
8
bits
|
11
bits
|
| Message
transmission time |
39.2
msec
|
16
msec
|
Execution
time (search of 32
ballasts) |
10
Sec
|
16ms
x 32 = 0.5 Sec
|
| Query
capability |
Limited
by protocol and ballast design
|
Unlimited.
All information is
available in IDC for transmission
|
Lighting
Control System
configuration |
The
ballasts are controlled by
Master Unit only.
|
All
addressable units are able to
be controlled by any of the
Local Control Units installed at
any convenient place and by RF
remote control as well.
|
Installation
Pay Back time
(approx.) |
>
5 years
|
2
years
|
From the above table one can see that:
- Systel
PLC does not need rewiring in retrofit. DALI does.
DALI installation is therefore expensive.
- DALI is
at a "room" system level because of its addressability
limitation.
Systel PLC is practically unlimited addressing wise, and it
is therefore at the system level.
- Systel
PLC set of commands emulates the DALI set of commands, thus
DALI programming is transportable into Systel PLC
- Systel
PLC has ERCC and therefore the communication has controlled
command error rates
|
SYTRL400 – A PLC test report
A test report presenting the characterization test results of the Power Line Carrier (PLC) Modem embedded in the IDC2000 ICs family. This report also includes the results of the communication test performed using the PLC transceivers in the wall control and the ballast reference designs of Systel's Lighting Evaluation Kit based on the IDC2000 ICs. This report also describes the test method applied and includes the Bit Error Rate (BER) versus S/N achieved in the communication test.
Date: November 5, 2006 |
|
Application Note SYANL404
PLC-Link™ Power Line Carrier Communication for a Building Control based on IDC2000 devices. |
|
Application Note SYANL405
PLC Communication Protocol for Building Control System based on IDC2000 devices |
|
Application Note SYANL407
Back-Filters Reference Designs for 20A and 16A Single Phase Branches for the Energy Savings Lighting System (ESLS) using PLC-Link™ Communication based on the IDC2000 devices. |
|
The Digital Power Control Pioneers 
