The JA-121T module is a universal adapter to RS-485 for other systems. It enables connection of the JABLOTRON 100 system bus to an RS-485 serial line and vice versa.
JA-121T RS-485 bus interface
An application can be e.g. for the connection of a Smart Home system. It contains galvanically separated circuits for 4 kV. Data are sent in the case of a status change or on request. In the passive mode all data are only sent on request. The module is addressable and it occupies one position in the system
Technical specifications
| Input part | |
|---|---|
| Power | from the control panel BUS 12 V DC (9 – 15 V) |
| Current consumption to calculate the backup (standby) | 15 mA |
| Maximum current consumption for cable choice | 20 mA |
| Output part – supply from an external device | |
| Power | from an external device 12 V DC (6 – 28 V) |
| Nominal current load | 15 mA |
| Maximum current load | 15 mA |
| RS-485 operational voltage | 5 V (4.75 – 5.25 V) |
| Input/output separation | galvanically (up to 4 kV) |
| General | |
| Dimensions | 52 x 38 x 14 mm |
| Weight | 15 g |
| Classification | Environmental class II (According to EN 50131-1) |
| Operational environment | Indoor general |
| Operational temperature range | -10 to 40 °C |
| Average operational humidity | 75 % RH, non-condensing |
| Complies with | EN 50130-4, EN 55032, EN 50581 |
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