Description
Introduction
The ABB FW/S8.2.1 (Product ID 2CDG120039R0011) is an 8-channel KNX modular DIN rail component (MDRC) engineered to broadcast accurate time and date parameters across a KNX (TP) bus network. Designed for structured building control, this radio time switch serves as a centralized timing reference for system-wide schedule execution. This device is part of our KNX system devices range.
Equipped with a 2-inch screen and onboard manual controls, the device simplifies the setup and modification of time programs. Time signals can optionally be received using a DCF or GPS antenna, ensuring consistent real-time synchronization across connected actuators and system devices.
Key Features
- 8 independent channels for scheduling and time transmission.
- Built-in 2-inch display screen for status monitoring.
- Manual operation functionality supported directly on the device.
- Optional DCF or GPS antenna connectivity for precise timing input.
- Powered via KNX (TP) bus with CR1 Lithium button cell battery backup.
- Certified under KNX Certificate 9AKK105710A0044.
- IP20 protection degree for switchboard installation.
Benefits
- Bus-Wide Synchronization: Transmits real-time clock and calendar data directly across the KNX (TP) network.
- Flexible Time Signal Reception: Supports optional external signal synchronization via DCF or GPS antennas.
- Multi-Channel Control: Features 8 independent channels to manage diverse scheduled automation sequences.
- Direct On-Device Adjustments: Integrated 2-inch display and manual operation controls allow convenient field configuration.
- Power Loss Backup: Includes a CR1 Lithium button cell battery to maintain time accuracy during system power disruptions.
- Standardized Form Factor: MDRC housing rated at IP20 for clean switchboard panel mounting.
Technical Specifications
Applications
- System-wide time synchronization across commercial KNX (TP) automation networks.
- Centralized management and execution of 8-channel time-controlled automation programs.
Installation Notes
- Mount the unit on standard DIN rail inside an enclosure ensuring an IP20 minimum environment.
- Connect to the KNX (TP) bus according to standard bus wiring practices.
- Insert the included CR1 Lithium button cell battery for internal clock memory backup.
- Refer to official documentation reference 2CDG941102P0001 for complete wiring and antenna integration procedures.
Developer Resources
- Instructions and Manuals Reference: 2CDG941102P0001
- CE Declaration of Conformity: 2CDK509063D2701
- KNX Certificate: 9AKK105710A0044
- ETIM 9 Classification: EC000689 (Time switch for bus system)
FAQ
What is the primary function of the ABB FW/S8.2.1?
The FW/S8.2.1 sends current time and date signals over the KNX (TP) bus and manages time programs across 8 channels. Explore more ABB KNX solutions for professional building automation projects.
Can the FW/S8.2.1 receive external radio time signals?
Yes, time synchronization can optionally be received via a connected DCF or GPS antenna. For certificates and current technical files, refer to the official product documentation.
How many channels are available on this model?
The device features 8 channels for time program adjustments.
What type of battery is used for backup power?
It uses one CR1 Lithium button cell battery to preserve timing settings.
What is the exact product model?
The order/model code for this page is FW/S8.2.1. Match it against project documents before purchase.
Who is the manufacturer?
This product is manufactured by ABB.
Conclusion
The ABB FW/S8.2.1 8-channel radio time switch provides a reliable, centralized clock solution for KNX (TP) installations. Combining local manual controls, a 2-inch display, optional DCF/GPS antenna inputs, and MDRC mounting, it delivers accurate time synchronization across building management systems. Installers and system integrators can review our installer purchasing support options.
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