Product catalog
BLC/1 – USB-RS485 isolated converter – Self-powered
0,00 €
BLC/1 is an industrial electrical converter, USB to 560 V-isolated RS485 serial standard with Mini XLR connector, 5 V-self-powered via Type A USB port.
On the PC, the USB device is seen as a RS232 port (VCP, Virtual COM Port), and it does not need any DIP switch. This USB-RS485 serial converter is Half Duplex and it automatically detects data direction and transmission data rate up to 250 kbps, so it can be easily installed in any new or existing network.
The Operating System should automatically detect the device and install the necessary drivers, which can also be downloaded here.
Description
BLC/1 is an industrial electrical converter, USB to 560 V-isolated RS485 serial standard with Mini XLR connector, 5 V-self-powered via Type A USB port. It can be used to allow a PC to communicate with a RS485 network. This converter is powered via the Type A USB, so there is no need to use an external power supply. The Operating System should automatically detect the device and install the necessary drivers, which can also be downloaded here. On the PC, the USB device is seen as a RS232 port (VCP, Virtual COM Port), and it does not need any DIP switch. This USB-RS485 serial converter is Half Duplex and it automatically detects data direction and transmission data rate up to 250 kbps, so it can be easily installed in any new or existing network.
Use cases
USB converters are typically used to allow the communication of a PC with a RS485 network, or to increase the transmission distance. The isolated RS485 protects the PC against voltage surges of a network, which are common in a wide RS485 bus, like an industrial environment, or a solar power system. In a heavily disturbed network, such as industrial environment, it is good practice to integrate two or more optical-electrical converter to guarantee signal integrity. Furthermore, there are environments where electrical devices are strictly forbidden, such as pools, saunas, fire-risk buildings, so optical fiber is mandatory.
Versatility
USB-serial converters are available also without isolation, with different combinations of serial standard, or with other connectors. BLC/1 and BMC/1 converters for example use 3-pins Mini XLR, with isolated and non-isolated RS485, respectively. BTS/1 and BTV/1 come with synthetic or glass optical fiber, to isolate against electromagnetic interferences. Industrial serial converters BFM/1 and BFC/1 work with RS422 serial standard, with screw terminals or 5-pins Mini XLR connector. Every combination of serial standard, optical fiber, and power supply, is however available, while special requests (such as higher data rates) can be made via the contact form.
Technical Specifications
Main features
| Power supply | USB |
|---|---|
| Power consumption | 1 W |
| Serial transmission data rate | 0 – 250 kbps (automatic) – higher data rates on request |
| Isolation voltage | 560 V (DIN EN 60747) – 2500 V for 1 minute (UL 1577) |
USB
| Connector | USB type A |
|---|---|
| Technology | USB 2.0, USB 1.1 |
| Interface type | VCP (Virtual COM Port) based on RS232 |
| Data direction | Full Duplex |
| Supported operating systems | Windows 98 and above, Mac OS 8 and above, Linux |
RS485
| Communication type | Half Duplex on a balanced line, with automatic data direction |
|---|---|
| Maximum bus voltage | ± 60 V – ESD ± 16.5 kV (Human Body Model) |
| Common mode range | ± 25 V DC |
| Slew rate | Limited, to have an error-free transmission |
Mechanical features
| Dimensions | 90 mm x 50 mm x 25 mm |
|---|
Working conditions
| Degree of protection | IP20 |
|---|---|
| Operating temperature | -20 °C to +50 °C |
| Storage temperature | -40 °C to +80 °C |
