Industrial Converter

The Industrial Converter MD-21 is a 20 mA current loop (TTY) converter allowing RS-232 systems to be connected to a 20 mA current loop interface over a distance up to 6 km (3.7 mi). The serial interface is a standard RS-232 interface with five control signals. Since the communication is totally transparent there is no need for different settings except for if the current loop shall be active or passive.

RD-48 industrial serial repeater with a multi-purpose device that allows the extension of networks beyond the normal scope of the RS-422/485 standards. The device can be used as a repeater to extend the maximum distance of a network beyond 1200 m or the number of devices above 32. It can also swap between 2 and 4 wires or be used to build a structured and isolated network.

The device is simple to install with its purpose built integral DIN clip and with all configuration by DIP switch.

The RD-48 is designed for use in heavy duty industrial applications, the wide power range, galvanic isolation, transient protection and the design of the termination and fail safe guarantees communication in the worst environments.

When the RD-48 is used as a repeater it automatically detects the data direction, regenerates and retransmits the data according to the RS-422 or RS-485 standard. The repeater also has support for some Manchester coded synchronous protocols.

• Power
Operating voltage
LV: 9.6 to 57.6 VDC
HV: 85.5 to 264 VAC or 88 to 300 VDC
Rated current LV : 300mA
HV : 30mA
• Interfaces
RS-422/485 2 x 4-position detachable screw terminal, 300 bit/s to 1.5 Mbit/s
• Temperature
Operating –40 to +70°C (–40 to +158°F)
Storage and transport –40 to +70°C (–40 to +158°F)
• EMC specification
EN 61000-6-2 Immunity industrial environments
EN 61000-6-3 Emssion residental environments
• Safety
Safety EN 60950, IT equipment
• Enclosure
Dimension (W x H x D) 55 x 100 x 132 mm (2.16 x 3.93 x 5.19 in)
Weight 0.3 kg
Degree of protection IP20