RS-232 Isolator
MD-52
… RS-232 repeater and isolator
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Serial speed up to 115 200 kbit/s
Two RS-232 interface one DCE and one DTE
9 pol D-sub alternately 9 or 5 pin screw terminal
… Easy to install and use
• Transparent communication
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Purpose built DIN rail casing with integral clip
Plug and play
… Designed for use in harsh industrial applications
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AC or DC power options
Total galvanic isolation
Industrial EMC, shock and vibration approval
… Secure connection between two RS-232 interfaces
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Eliminates ground loop current
Duplicate the RS-232 distance
Full duplex and transmission of one control sig
The MD-52 is a RS-232 isolator allowing RS-232 systems to be connected where there is a need to isolate interfaces from each other. The serial interfaces are standard RS-232 configured as DCE and DTE creating a simple installation.
The RS-232 serial interface is connected through a standard 9 pol D-sub or terminal block with screw connectors. MD-52 is a plug and play unit and the communication is totally transparent.
The MD-52 is designed for use in heavy duty industrial applications. The different power options, galvanic isolation, guarantees communication in the worst environments. The MD-52 has been tested to meet many EMC, isolation, vibration and shock standards, all to the highest levels suitable for heavy industrial environments.
The design of the isolator makes MD-52 suitable for applications where there is a risk for ground loop currents or other electrical disturbances.
Ordering Information
Art.no
Description
3601-0001
3601-0003
3601-0101
MD-52, RS-232 isolator, 115.2 kbit/s, DIN model, 12–36 VDC.
MD-52, RS-232 isolator, 115.2 kbit/s, DIN model, 36–55 VDC.
MD-52, RS-232 isolator, 115.2 kbit/s, DIN model, 230 VAC.
www.westermo.com – A Beijer Electronics Group Company
Specifications MD-52
Dimensional drawing
55 ±1 20 ±1
120,3 ±1
Dimension W x H x D 55 x 100 x 132 mm (2.16 x 3.93 x 5.19 in)
Weight 0.5 kg
Degree of protection IP 20
Power
Operating voltage
MD-52 DC
12 – 36 VDC
130 mA @ 12 VDC
MD-52
36 – 55 DC
36 – 55 VDC
50 mA @ >36 VDC Rated current
Interfaces
RS-232 female
RS-232 male
RS-232 detachable screw terminal
Temperature
Operating
1 x up to 115.2 kbit/s
1 x up to 115.2 kbit/s
2 x up to 115.2 kbit/s
AC: –25°C to 60°C (–13 to 140°F)
DC: –25°C to 70°C (–13 to 158°F)
Agency approvals and standards compliance
EMC SS-EN 50081-1/SS-EN 55022 (1992): Class B
SS-EN 50082-2/SS-EN 61000-4-2 (1995): 4 kV CD, 8 kV AD
SS-EN 50082-2/SS-EN 61000-4-4 (1995): 4 kV power, 2 kV signals
SS-EN 50082-1/SS-EN 61000-4-3 (1996): 3 V/m
SS-EN 50082-1/SS-ENV 50204 (1995): 3 V/m
SS-EN 50082-1/SS-EN 61000-4-6 (1996) 3 V/m
Safety EN 60950:1992/A1,1993;A2,1993;A3,1995
126,4 ±1
MD-52 AC
207 – 264 VAC
23 mA @ 230 VAC www.westermo.com – A Beijer Electronics Group Company
