1. ABB STOTZ-KONTAKT GmbH ABB i-bus® KNX Time Switch FW/S 8.2.1
Jörn Kruse / STO-G /
ABB STOTZ-KONTAKT GmbH ABB i-bus® KNX Time Switch FW/S 8.2.1
© STO/G - Slide 1

2. Time Switch FW/S 8.2.1 Replacement of existing SW/S and FW/S
Application: Time Switches are used for time programs in buildings. They can easily be handled by on site personnel, like - janitor - technical maintenance
The existing 3 time switches are replaced by the new FW/S
ABB
FW/S 4.5
replaced by
SW/S 4.5
FW/S 8.2.1
SW/S 2.5
STO/G – Slide 2

3. Time Switch FW/S 8.2.1 Functions & Benefits
Supports day and week based time program
Time synchronization via the GPS or DCF signal
Backlighted display with text-based user guidance
Astronomical function for automatic calculation of sunrise and sunset
8 independent logical channels, each with - 1 standard-program (week / day) and extra programs over the year
PC programming via OBELISK memory card
Powerful and easy to use functionality for holiday programs, automatic summer/winter time and random programs
8 years backup time in case of voltage failure
ABB
FW/S 8.2.1
GPS Antenna
DCF Antenna
PC software OBELISK
STO/G – Slide 3

4. Time Switch FW/S 8.2.1 Design Overview
Connection of the GPS and DCF antenna
Width: 3 modules
Worldwide operating voltage: V, 50/60 Hz
The mains voltage is required for supplying the GPS or DCF antenna.
If no antenna is connected, the supply via the KNX bus is sufficient
The device can be operated even in case of power failure of mains and bus voltage
Note: 8 years of backup time if device has no supply voltage. The backup battery cannot be exchanged or replaced
ABB
Backlighted Display
Slot for OBELISK memory card
Supply voltage connector
STO/G – Slide 4

5. Time Switch FW/S 8.2.1 OBELISK top2 PC Programming Set
The OBELISK top2 Programming set allows the full-function programming of the FW/S 8.2.1
The USB programmer stores the time program on a memory card.
After inserting the memory card the program can be taken over into FW/S.
Alternatively, the time program can be loaded directly into the FW/S via the KNX bus (no memory card required).
Note: The OBELISK top2 is not compatible with the “old” Obelisk software.
Note 2: Reading out the time program via the KNX bus will take several minutes.
STO/G – Slide 5

6. Time Switch FW/S 8.2.1 Programming with OBELISK top2
ABB
Option 1: Via memory card
Option 2: Directly via KNX (no ETS required)
The download of a time program into the device requires about 2 min.
Reading out the time program requires significantly longer.
STO/G – Slide 6

7. Time Switch FW/S 8.2.1 Astronomical Function
Time switch function
ABB
Astro function
One channel can work either as a time switch or an astronomical function
The astronomical function defines the switching times in relation to sunrise and sunset.
STO/G – Slide 7

8. Time Switch FW/S 8.2.1 Connection of the Antennas
max. 50m
ABB or
DCF
GPS
A GPS or a DCF antenna can be connected. If a GPS antenna is connected, the device is able to provide its global position used in the astronomical function.
STO/G – Slide 8

9. Time Switch FW/S 8.2.1 Summary: Replacement by the New Device
Consider the width of the device (3 modules)
New OBELISK top 2 is necessary
New antenna (GPS or DCF) required
Mains voltage necessary (if an antenna is used)
A time program can not be taken over into the new device
The new device provides all functions of the old ones (and many more…)
FW/S 8.2.1
STO/G – Slide 9

10. STO/G – Slide 10