KD485-STD
RS232 to RS422/485 isolated converter, DIN-rail
The KD485 is a multi-purpose interface converter designed to satisfy a wide range of industrial datacomms requirements.
One common application is the connection of multi-dropped RS485 devices to an RS232 system. Most currently available converters require the RS232 device to control its RTS signal to enable/disable the RS485 driver, but some RS232 systems do not have this capability.
The KD485-ADE avoids RTS control: Another application is a multi-drop connection of non-addressable RS232/422/20mA devices, to enable to be conveniently polled from a single RS485 Master device. The KD485-ADE can act as an “addressable adapter”.
Many projects involve the interconnection of equipment which is mutually incompatible. The KD485-PROG can be programmed – in ANSI C - to convert virtually any async industrial automation protocol into any other.
KD485-STD
This entry-level product has no CPU. It is an interface converter/isolator only and is baud rate and character format independent.
Its main application is RS232/422/485/20mA isolated interface conversion. It can also drive a 2-wire RS485 bus if the RS232 host provides RTS control (RTS=HIGH when sending, LOW when receiving).
| Ports: | • 2 Asynchronous ports, Tx and Rx signals only. XON/XOFF selectable |
| Port parameters: | • 0-115200 baud, all character formats |
| Interface options: |
• Standard product: port-1 is RS232; port-2 is RS422/485/20mA. • Any combination on port-1 and port-2 of RS232/422/485/20mA can be supplied |
| Configuration: | • Dip-switches |
| Signaling: | • LED, port-1 Rx/Tx, port-2 Rx/Tx, power |
| Power supply: | • +7 to +35VDC |
| Consumption: | • 1-2 watts (startup current 300-600mA) |
| Fan out: | • |
| Isolation: | • 3 Way galvanic isolation, 64V PK at > 1000AC RMS, 1 second |
| EMI-RFI protection: | • Emession EN50081-2 (94), immunity EN50082-2 (95) |
| EMC & Security: | • |
| Environment: | • Operating temp. 0 to +50°C, RH 0 to 90% non condensing |
| Dimensions, weight: | • 29mm (W) x 113mm (H) x 100mm (L) |
| Ventilation: | • 50mm gap below and above the converter |
