Intelligent Control Aspect

Q1

What solution and products does MEAN WELL provide for building automation?

Ans

For Building automation, MEAN WELL utilizes KNX as the solution. Please refer to the KNX building automation website for detailed information and relevant applications.
http://building.meanwell.com.tw/
 

Q2

What solution and products does MEAN WELL provide for wireless lighting control?

Ans

For wireless lighting control, MEAN WELL utilizes Bluetooth low energy Mesh. Currently, there are LCM-IOT and PWM-IOT series in the product line, which can be adopted in applications of constant current and constant voltage control. Please refer to the specifications for detailed information.
   

Q3

How many units can be controlled by CASAMBI app?

Ans

It is 125 nodes that can be controlled at a time by CASAMBI app.

Q4

What solution and products does MEAN WELL provide for industrial automation?

Ans

For industrial automation, MEAN WELL suggests using PMBus and CAN bus for digital control and monitoring. Please refer to the tech note link below for introduction and difference between the buses.
http://configurable.meanwell.com.tw/newsInfo.aspx?c=5&i=634
 

Model / interface PMBus CAN bus
 RSP-1600/DPU-3200
 UPH-1500/2500
By request By request
 RCP/RxB-1600
 DRP-3200/DxB-3200
 PHP-3500
 HEP-1000
As standard By request
 RCP-2000 As standard X

Q5

What is the difference between linear and logarithmic dimming curves in DALI?

Ans

The brightness increasing in a steady/linear rate isn't observed as a linear increase to the human eyes. It is light source whose dimming curve is in logarithmic mode shows a linear increase to the human eye. There are linear and logarithmic dimming curves selectable for users in DALI.

Q6

What is the maximum communication distance for Mean Well products equipped with CAN bus communication interface?

Ans

MEAN WELL's CAN bus products meet ISO 11898 and the bus rate is 250kbps. Max. communication distance is at least 150m for the products.

Q7

What is main difference between DALI-1 and DALI2? Is there any precaution before use?

Ans

DALI-2 is an upgraded version of DALI-1. DALI-2 has been adjusted and optimized for the following contents.
1. More precise specification of electrical tolerances and restructuring of specification make DALI-2 less risk for
    malfunctions and increased data accuracy.
2. DALI-2 added 14 new commands/features and removed 1 command. The most important one is extended
    fade time, the range is from 0.1 second to 16 minutes.
3. DALI-2 optimizes its communication sequence between application controller, input device and control gear,
    allowing devices from different manufacturers to work together on the same DALI bus.
4. DALI-2 products must be fully certified by the DiiA Association before they are allowed to use the DALI-2
    trademark.
    DALI-1 and DALI-2 products can be used together. Compatibility issue is shown in the table below.

Configuration Description
DALI-2 application controller with
DALI-1 control gears
Compatible, but no DALI-2 new features in DALI-1 control gears
DALI-2 control gears installed into DALI-1 system DALI-2 control gears are compatible with the system

Q8

What is the maximum communication cable length for DALI/KNX/CAN bus/PMBus?

Ans

Please refer to the table.

Interface Length (m) Cable
DALI 300 1.5 mm^2
 
KNX
KNX power-KNX device : 350
KNX device-KNX device : 700
From – End : 1000
 
KNX cable
CAN bus 150 Normal communication cable
PMBus 10 Normal communication cable

Q9

Where can I have the communication protocol for the products I want?

Ans

For models equipped with PMBus, such as RCP-1600, you can refer to the communication interface chapter in the users manual. For those recognized as optional (non-standard), such as RCP-1600-48CAN, please apply for it through your local distributor.

Q10

Why my DALI drivers cannot be addressed by a DALI master?

Ans

There are several reasons in the table:

Possible Cause Suggested Solution
There is no AC connected to the driver Try again after power on
DALI communication line is off Try again after connecting to the bus
Driver or controller is damaged Contact the maker for repair

If the problem still cannot be solved, please contact your local distributor or MEAN WELL for assistance.
 

Q11

There is communication problem in my PMBus/CAN bus devices, how can I solve it or improve it?

Ans

There are several reasons in the table.

Possible Cause Suggested Solution
Addressing error Try again after re-addressing
Data rate error Please set 100kHz for PMBus models and 250kbps for CAN bus models
The power is OFF Try again after power on
The communication line is off Try again after connecting to the bus
Noise interference Add isolation IC before you MCU or controller to reduce noise
 
If the problem still cannot be solved, please contact your local distributor or MEAN WELL for assistance.

Q12

What are the frequently asked questions for KNX products and where can I find them?

Ans

Mean well divided KNX problems into 3 aspects: ETS/Firmware, Application Aspect and KNX Data Secure. Please refer to the link below for detail.
https://building.meanwell.com/qa.aspx?c=9