2128 REG
Intended use
- Polling of conventional switching or push-button contacts, window contacts etc. in KNX systems, for reporting of states, meter levels, operation of loads, etc.
- Mounting on DIN rail according to EN 60715 in distribution boxes
Product characteristics
- Status LED for each input
- Detection of voltage levels and changes on the input
- Transmitting of input status to the bus
- Transmitting behaviour freely adjustable
- Functions: switching, dimming, blinds up/down, brightness values, temperatures, calling up and saving light scenes, etc.
- Inputs can be blocked separately
- Connection of external AC or DC voltages
- Auxiliary voltage output for polling potential-free contacts
- No separate power supply required
- Separate reference potentials for inputs
- Pulse counter (firmware version V02 or higher), also suitable for S0 pulses
Technical data
| KNX medium: | TP 256 |
| Rated voltage KNX: | DC 21 … 32 V SELV |
| Power consumption KNX: | max. 350 mW |
| Stand-by: | max. 200 mW |
| Connection, KNX: | terminal |
| Ambient temperature: | −5 … +45 °C |
| Storage/transport temperature: | −25 … +70 °C |
| Inputs | |
| Rated voltage: | AC/DC 12 … 48 V |
| Signal level “0” signal: | AC/DC −48 … +2 V |
| Signal level “1” signal: | AC/DC 8 … 48 V |
| Input current at rated voltage: | |
| Input current: | 2 mA |
| Signal duration: | min. 30 ms |
| Rated frequency AC signal: | 30 … 60 Hz |
| Number of contacts per input | |
| NO contacts: | unlimited |
| NC contacts: | max. 20 |
| Output voltage: | DC 24 V SELV |
| Mounting width: | 72 mm (4 rail units) |
| Stand-by power: | max. 200 mW |
| Power loss: | max. 1 W |
| Connection | |
| Connection mode: | screw terminals |
| single wire: | 1 x 0.2 … 4 mm² |
| stranded without ferrule: | 1 x 0.34 … 4 mm² |
| stranded with ferrule: | 1 x 0.14 … 2.5 mm² |
| Cable length: | max. 100 m |
