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Packaging Content
- Astronomical digital time switch DWA
- Installation manual
Mounting
Dimensions (mm)
Mounting
Wiring diagram
DWA1: 1 channel
DWA2: 2 channels
Access to device
| Button | Function |
 | Turn on the display Access the menu ESC (one level back) |
 | Decrease datum Previous menu Switching channel 1 Lock channel 1 |
 | Increase datum Next menu Switching channel 2 Lock channel 2 |
 | Confirm selection |
 | Hardware reset |
 3 sec | Random switching channel 1 |
 3 sec | Random switching channel 2 |
 3 sec | Active cycle switching on channel 1 |
 3 sec | Active cycle switching on channel 2 |
Display description
Description
| 1 | General indications |
| 2 | Time indication |
| 3 | Channel 1 / Channel 2 status indication   Active manual program+  Blocked switchings +  Active random switchings + (flashing): active cycle switchings Active holiday program Active pulse program |
| 4 | Day of the week (DAY) indication |
First commissioning
Access the menu
Setting language
Standard settings
| Setting | Description |
| Date | Format: DD/MM/YY 1st day of the week: Monday |
| Astronomical coordinates | Country: Italy City: Agrigento Latitude: North (37° 19' 12'') Longitude: East (13° 34' 12") |
| Daylight saving time (DST) change: active | Start of daylight saving time (DST): last Sunday of March at 02:00 o'clock End of daylight saving time (DST): last Sunday of October at 03:00 o'clock |
| Time correction: | Sunrise: +0:00 Sunset: + 0:00 |
| Time zone: | +1:00 UTC |
| Random switchings: | Minimum: 1 minute Maximum: 5 minutes |
| Cycle switching | -ON duration: 1 minute -OFF duration: 1 minute |
| PIN protection: | Disabled (---) |
| Password Bluetooth | Disable (Password: 000000) |
 To activate Bluetooth interface, password must be set different from 000000 in the Bluetooth menu. | |
Initial page
| Description | |
| 1 |  Information messages : day of the week, or product identification code and serial number, or battery status. |
| 2 | Date |
| 3 | Relay 2 status (ON/OFF) |
| 4 | Hour |
| 5 | Day of the week |
| 6 | Relay 1 status (ON/OFF) |
 If the DWA switch is not powered from the mains, the information messages will show the text:  |
Menu description
| Menu | Description |
| Settings | Allows to view and eventually modify the general operation settings as indicated in point 8.Settings. |
| Program | Allows to create a new program, check created programs, change or delete a created program, copy all created programs of channel 1 on channel 2 and vice versa. |
| Bluetooth | Allows to enable or disable the Bluetooth interface and to change the password used to associate devices |
| Hour counter | Allows to display the hours of usage (relay on) of connected load(s). |
| Reset | Allows to restore the initial state of the device |
| Firmware menu | Shows the firmware installed in the device |
Settings
| Setting | Description |
| Language | Language setting. |
| Date | Date settings. |
| Time | Hour, minute and time zone setting. |
| Daylight saving time | Daylight saving time (DST) and winter time (CET) automatic setting. |
| Astronomical coordinates | Setting of geographical coordinates of the installation place. |
| Random switchings setting | It allows to set the minimum and maximum random switching duration of the channel where it is activated. |
| Cyclic function setting | It allows to set the minimum and maximum switching cycle of the channel where it is activated |
| Protection PIN | The protection code is used to lock the keyboard and prevent changes by unauthorized persons |
"DBT Timer" app download
Connect the Smartphone to a time switch:
- Activate Bluetooth on the digital time switch;
- Activate Bluetooth on the Smartphone;
- To associate a new device, press the symbol in the upper right corner on the App;
- Select the device from the list;
- Insert the password to pair the device (default password must be changed).
With the APP it is possible to:
- Create new program
- Change settings
- View parameters and create give a name to the device
- Manually control the relay output(s) and activate the random and cyclic function
Priority list on/off
In case in which, on the same channel, on/off programs are provided with different period (daily or weekly) to carry out in the same day, only the program with the highest priority is executed.
From this example it's possible to see that the daily event on Monday is not carried out because in the same day it is provided the beginning of the week program (even if the daily program of Monday begins and ends before the beginning of the weekly program). Instead, the daily program of Sunday is carried out because it's the only one running for that day.
Holiday program
The holiday program just begins and ends exactly at the specified times.
Programs priority
The priority programs defines how DWA manages the case in which programs with different period are running at the same time (1 indicates higher priority).
* Date: s elect day, month, year (program carried "only once in the life of the product"). If the month is not specified, the program is carried out all days xx of all months of the specified year.
Technical data
| Power supply | [V] | 230 Vac (-15% ÷ +10%) |
| Frequency | [Hz] | 50-60 Hz |
Power consumption
| DWA1 | 2W (6 VA) |
| DWA2 | 2W (6 VA) |
| Back up battery | Lithium battery 3V, CR2032 (replaceable) |
Output
| DWA1 | 1 monostable changeover relay with maximum switchable load of 16A / 250 V |
| DWA2 | 2 monostable changeover relays with maximum switchable load of 16A / 250 V |
| Max cable section of terminal block | 2,5 mm 2 |
| Display | LCD with backligthing (active with AC power supply) |
| Communication interface | Bluetooth BLE 4.2 (active with main power supply) |
Storable programs
| DWA1 | 120 events |
| DWA2 | 120 events (divisible on two channels)) |
| Actions type: | 1 B |
| Operating temperature | -20 ÷ 50°C |
| Operating humidity | 20 ÷ 90% non condensing |
| Storage temperature | -25 ÷ +70°C |
| Operating frequency bend | 2400-2483,5 MHz |
| Maximum transmitted radio frequency power | 4 dBm |
| Modules | 2 DIN modules |
| Protection degree | IP20 |
| Insulation | Reinforced between accessible parts (front) and all the other terminals. |
Disclaimer
The information in this document is subject to change without notice and should not be construed as a commitment by ABB. ABB assumes no responsibility for any errors that may appear in this document.
In no event shall ABB be liable for direct, indirect, special, incidental or consequential damages of any nature or kind arising from the use of this document, nor shall ABB be liable for incidental or consequential damages arising from use of any software or hardware described in this document.
Working with high voltage is potentially lethal. Persons subjected to high voltage may suffer cardiac arrest, burn injuries, or other severe injuries. To avoid such injuries, make sure to disconnect the power supply before you start the installation. Electrical equipment should only be installed, accessed, serviced and maintained by qualified electrical personnel.
For safety reasons it is recommended that the equipment is installed in a way that makes it impossible to reach or touch the terminal blocks by accident. The best way to make a safe installation is to install the unit in an enclosure. Further, access to the equipment should be limited through use of lock and key, controlled by qualified electrical personnel.
Contact us
ABB S.p. A.
Electrification Business
Viale dell'Industria, 18
20010 Vittuone (MI) Italy
https://new.abb.com/low-voltage
Installation by person with electrotechnical expertise only.
Documents / Resources
References
Download manual
Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.
Download ABB DWA1, DWA2 - Astronomical Digital Time Switch Manual
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